Glutamine

The amino acid glutamine improves low mood by addressing gut health, and it has calming effects too

October 3, 2025 By Trudy Scott 2 Comments

Recent research has shown that the amino acid glutamine can positively affect gut health by supporting the gut microbiome, gut mucosal wall integrity, and by modulating inflammatory responses.

As modulated by the vagus nerve, via the enteric nervous system, the gut-brain connection can impact the brain’s neurochemical environment. Poor gut health can disrupt the balance of neurotransmitters, which can result in neuropsychiatric based conditions such as depression.

Glutamine supplementation may provide significant adjunctive nutritional support in cases of depression by promoting proper gut health and function.

The above is an excerpt from the paper, The role of glutamine in supporting gut health and neuropsychiatric factors, published in 2021.

The authors do note the fact that glutamine is a “fundamental precursor to the most prevalent neurotransmitters, GABA and glutamate.” This is why glutamine supplementation can be calming for many individuals and may sometimes be too stimulating for some folks. It also highlights the importance of biochemical individuality and why it’s important to find your ideal dose (more on that below).

I appreciate their call for more research on glutamine, “as well as studies which could explore using glutamine in concert with other supportive amino acids, such as GABA and tyrosine, in an effort to restore neurotransmitter equilibrium” (more on that below too).

Read on below to learn more about how glutamine directly supports gut health and what harms the gut; how to know if glutamine will be calming or too stimulating, and how much to use; and other clues that you may benefit from glutamine; and additional resources when are new to amino acids such as glutamine, GABA and others.

How glutamine directly supports gut health and what harms the gut

From the above paper, glutamine:

1) has a positive impact on sustaining the balance of the gut microbiome
2) increases the expression of tight junction proteins and the integrity of the intestinal lining (i.e. it heals leaky gut)
3) helps to minimize the inflammatory response in situations of gut mucosal irritation (i.e the inner most lining of the digestive tract).

The authors also discuss all of the many factors that are harmful for the gut: highly processed foods, refined sugars, saturated fat, and minimal healthy fatty acids and antioxidants; lack of probiotics and prebiotics; blood sugar swings; stress and high cortisol; medications and alcohol consumption. Much of this is addressed in my book “The Antianxiety Food Solution”

It’s well-worth reading the entire paper for a full understanding of the two-way gut-brain connection via the vagus nerve and the role of the microbiome when it comes to neurotransmitter production and much more.

How to know if glutamine will be calming or too stimulating, and how much to use

As mentioned above, the authors share that glutamine is a precursor to GABA, a calming neurotransmitter i.e. it is often calming.

Glutamine is also a precursor to glutamate and can be too stimulating for some, typically when very high doses are used.

The paper mentions studies that “observed the effects of glutamine supplementation used at doses of between 15 g and 30 g,” however my recommendation is to start low and slowly increase based on your unique need. I have clients and those in my programs start with 500 mg once a day and increase to 1-3 x 500 mg, up to 3 or 4 times a day.

The only way to know if it will be calming or stimulating is to do a trial alone i.e. with no other new supplements, and carefully track the effects.

I also find using glutamine powder and holding it for 1-2 minutes on the tongue is more effective and less is often needed. This has additional benefits of stopping intense sugar cravings in their tracks (more on this below).

Other clues that you may benefit from glutamine: symptoms of low blood sugar

As mentioned above, glutamine helps reduce intense sugar cravings, and prevents low blood sugar (which can actually cause anxiety and panic attacks). This aspect is not mentioned in the paper but addressing low blood sugar is yet another application of glutamine when it comes to anxiety and low mood.

Here are all the symptoms we see with low blood sugar:

Crave sugar, starch or alcohol any time during the day
Irritable, shaky, headachey – especially if going too long between meals
Intense cravings for sweets
Lightheaded if meals are missed
Eating relieves fatigue
Agitated, easily upset
Nervous, anxious, panic attacks

And here are some other blog posts that illustrate some of the above:

Together with low serotonin and low GABA, addressing low blood sugar is one of the most effective approaches I use with clients to help ease anxiety. We achieve this with the use of glutamine and by controlling blood sugar by starting the day with a breakfast that includes quality animal protein.

We may also use tyrosine if there are low dopamine symptoms and d-phenylalanine if there are low endorphin symptoms, in an “effort to restore neurotransmitter equilibrium.”

Additional resources when you are new to using glutamine, GABA or tyrosine, or other amino acids as supplements

We use the symptoms questionnaire to figure out if low blood sugar (indicating a possible need for glutamine) or low GABA (indicating a possible need for GABA or theanine) or low dopamine (indicating a possible need for tyrosine) or other neurotransmitter imbalances may be an issue for you.

If you suspect low levels of any of the neurotransmitters and do not yet have my book, The Antianxiety Food Solution – How the Foods You Eat Can Help You Calm Your Anxious Mind, Improve Your Mood, and End Cravings. I highly recommend getting it and reading it before jumping in and using amino acids on your own so you are knowledgeable. And be sure to share it with the practitioner/health team you or your loved one is working with.

There is an entire chapter on the amino acids and they are discussed throughout the book in the sections on gut health, gluten, blood sugar control (this and glutamine is covered in an entire chapter too), sugar cravings, anxiety and mood issues. The importance of quality animal protein and healthy fats is also covered.

The book doesn’t include product names (per the publisher’s request) so this blog, The Antianxiety Food Solution Amino Acid and Pyroluria Supplements, lists the amino acids that I use with my individual clients and those in my group programs.

If, after reading this blog and my book, you don’t feel comfortable figuring things out on your own (i.e. doing the symptoms questionnaire and respective amino acids trials), a good place to get help is the GABA QuickStart Program (if you have low GABA symptoms too). This is a paid online/virtual group program where you get my guidance and community support.

If you need serotonin support, the Serotonin QuickStart Program is a good place to get help. This is also a paid online/virtual group program where you get my guidance on using tryptophan and 5-HTP safely, and community support during 5 LIVE Q&A calls. You can sign up to be notified when the next live launch of this program is happening.

If you are a practitioner, join us in The Balancing Neurotransmitters: the Fundamentals program. This is also a paid online/virtual program with an opportunity to interact with me and other practitioners who are also using the amino acids.

Now I’d love to hear from you…

Has glutamine helped you with your leaky gut, low mood and/or offered calming effects?

What about intense cravings for something sweet or irritability and poor focus? And other low blood sugar symptoms?

How much do you find helps? And do you use powder or capsules?

Are you interested in a program to learn more about the safe and effective use of glutamine and/or tyrosine?

Feel free to share and ask your questions below.

Reactive hypoglycemia in binge eating disorder, food addiction and intense sugar cravings, and how glutamine stops the cravings

February 9, 2024 By Trudy Scott 6 Comments

A number of years ago a woman came to see me looking for help for her anxiety, insomnia and out of control sugar cravings which she described as an “almost demonic urge to eat sugar and all things sweet.”

Before working with me she had been trying to control her low blood sugar levels (or hypoglycemia) by eating the right foods at the right times i.e. healthy fats and quality protein especially at breakfast. But this wasn’t enough to eliminate her intense sweet cravings. She would make and eat sweet treats all day long, using “healthier” sweeteners like monk fruit and maple syrup.

I had her complete the brain chemistry symptoms questionnaire and she scored high on all the low blood sugar symptoms as well as low GABA and low serotonin. We focused on low blood sugar first and the solution for her cravings was using 500 mg of glutamine opened onto her tongue.

Initially she was sure this would NOT work – how would she possibly be able to use glutamine in the midst of experiencing reactive hypoglycemia or low blood sugar?

I had the same conversation that I have with all my clients who would obviously rather eat something sweet than open a glutamine capsule onto their tongue: “If you have an intense craving for something sweet, tell yourself that you’re going to indulge, but also humor your nutritionist and take the glutamine anyway. You may be surprised to find your urge completely disappears.”

She did that and it worked time and time again, ending her demonic urge to eat something sweet every time and very quickly. And it helped her with all her low blood sugar symptoms.

This blog addresses the role of low blood sugar or reactive hypoglycemia in intense sugar cravings, binge eating disorder and food addiction, and how glutamine helps.

Research: Reactive hypoglycemia in binge eating disorder and food addiction

The 2023 paper, Reactive hypoglycemia in binge eating disorder, food addiction, and the comorbid phenotype: unravelling the metabolic drive to disordered eating behaviours, highlights the fact that “impaired metabolic response” such as fasting blood glucose fluctuations are a factor in binge eating and food addiction, driving out of control and “repetitive consumption of highly processed food.”

The researchers “investigated hypoglycemia events during a 5-hour-long oral glucose tolerance test” in 200 participants and “the association between the severity of eating psychopathology and the variability in hypoglycemia events was explored.”

The authors conclude as follows:

People with binge eating disorder/BED or food addiction/FA are prone to experiencing reactive hypoglycemia; food addiction severity may predict early and symptomatic hypoglycemia events. This can further reinforce disordered eating behaviours by promoting addictive responses, both biologically and behaviourally.

You can read the study here.

It’s worth noting that the participants did not have diabetes. I mention this because most of the reactive hypoglycemia research looks at diabetic patients. Reactive hypoglycemia in the non-diabetic population is considered controversial even amongst functional medicine and/or integrative practitioners. This paper stands out for this reason.

It’s also recently published which makes me excited. This research is confirming what we see clinically.

This research is very much in line with the demonic urge my client described, and directly tied to her low blood sugar and blood sugar swings. My client did not do a 5 hour oral glucose tolerance test. Instead we used the low blood sugar symptoms questionnaire (see below) and a trial of glutamine.

My client was also not diagnosed with binge eating disorder or food addiction but didn’t have to be for us to recognize the issue and have her benefit from nutritional support in the way of glutamine and learning to eat for blood sugar stability.

Unfortunately the authors do not discuss glutamine as a solution in this particular paper or in any other research on human participants who are non-diabetic. There are a few animal diabetes studies, with this 2013 study reporting that “glutamine was more effective in promoting glycemia recovery if compared with glucose, lactate, glycerol, or alanine.” The authors call for further investigations which I look forward to reading.

Low blood sugar symptoms and a glutamine trial

As a reminder here are the signs of low blood sugar:

Sugar cravings, binge eating and addiction symptoms:

Crave sugar, starch or alcohol any time during the day
Very intense cravings for sweets/sugar
Binge eating and/or food addiction (updated with this based on this research)

There are also anxiety, mood, sleep and energy symptoms when you have low blood sugar:

Nervous, anxious, panic attacks
Irritable, shaky, headachey – especially if you go too long between meals
Lightheaded if meals are missed
Agitated, easily upset
Eating relieves fatigue
Waking in the night or early hours with a jolt of anxiety/shakiness (I blogged about this here)

As I mention in the waking with a jolt/low blood sugar blog the good news is it’s relatively easy to figure out if low blood sugar is causing your symptoms. First I have clients rate their symptoms on the low blood sugar questionnaire and do a trial of glutamine. Next is figuring out the dosing and timing of glutamine, looking at a current food log and making dietary changes as needed.

Glutamine is always best opened on to the tongue but it must be used this way for stopping the intense sugar cravings quickly – as in immediately. It’s also used away from meals like all the amino acids.

If you notice improvements it’s very likely that reactive hypoglycemia or low blood sugar is a factor.

Glutamine for low blood sugar cravings: dosing and timing

As I share in my book and other blog posts, typically 500 mg glutamine is a good starting dose for intense cravings for sugary foods. We may increase based on individual needs and you may find you do need to use 500 mg -1000 mg two to three times a day when the intense desire for something sweet strikes – as blood sugar dips. Using a glutamine powder is a great way to use it especially if you find you do need more than 500 mg each time.

As I mentioned above when you use glutamine powder directly on the tongue (rather than mixed in water), the benefits are seen almost immediately and even if you don’t believe it could possibly work – like my client – your desire for sugar disappears.

GABA and serotonin support too

My client also needed GABA and serotonin support for her anxiety and sleep issues. Again, we used the low GABA and low serotonin symptoms questionnaire and did trials of GABA and tryptophan for her which helped further.

Sugar cravings and binge eating with other neurotransmitter imbalances too

Keep in mind that there is a sugar cravings aspect to all the neurotransmitter imbalances. The type of craving can be found on the above symptoms questionnaire. It’s not uncommon to need support more than one area:

Low blood sugar /hypoglycemia – glutamine for intense cravings at any time of the day
Low serotonin – tryptophan or 5-HTP for afternoon/evening cravings
Low endorphins – DPA for comfort/reward eating
Low catecholamines – tyrosine for low energy sugar cravings
Low GABA – GABA for stress eating

Glutamine product options – capsule vs powder

Products I recommend include Pure Encapsulations 500 mg l-glutamine (capsules opened on to your tongue) and Designs for Health l-glutamine powder as you find you need higher amounts. You can purchase these from my online store (Fullscript – only available to US customers – use this link to set up an account).

If you’re not in the US, Now l-glutamine 500 mg and Doctor’s best l-glutamine powder are products I recommend on iherb (use this link to save 5%).

Additional resources when you are new to using glutamine and other amino acids as supplements

We use the symptoms questionnaire to figure out if low blood sugar and/or low serotonin and/or low GABA and other neurotransmitter imbalances may be an issue for you.

If you suspect low levels of any of the neurotransmitters and do not yet have my book, The Antianxiety Food Solution – How the Foods You Eat Can Help You Calm Your Anxious Mind, Improve Your Mood, and End Cravings, I highly recommend getting it and reading it before jumping in and using amino acids on your own so you are knowledgeable. And be sure to share it with the practitioner/health team you or your loved one is working with.

There is an entire chapter on the amino acids and they are discussed throughout the book in the sections on gut health, gluten, blood sugar control (this is covered in an entire chapter too), sugar cravings, anxiety and mood issues. The importance of quality animal protein and healthy fats is also covered.

Have you had success with glutamine for blood sugar stability and binge eating, food addiction and intense cravings for sugar and carbs?

Have you also found it helps with sleep, leaky gut and anxiety during the day?

If yes, how much helps you? And how often do you use it? And what sugary foods have you been able to stop eating?

If you’re a practitioner do you use glutamine and with clients/patients with these low blood sugar cravings? Do you recognize reactive hypoglycemia as a very real issue in non-diabetics?

And please let me know if it’s helpful that I’m now including product recommendations and where to get them?

Feel free to share and ask your questions below.

Waking with a jolt, feeling shaky and anxious: low blood sugar/hypoglycemia, glutamine and eating for blood sugar stability

February 2, 2024 By Trudy Scott 22 Comments

Low blood sugar is one of a number of causes of waking in the night or early hours, often with a jolt and feelings of anxiety or feeling like you’re having a panic attack. As shared in a recent blog post, cortisol that is high at night can cause very similar symptoms.

Because of a low blood sugar question on the high cortisol blog, today I’m explaining the very different solutions to each root cause: glutamine and eating for blood sugar stability when you have low blood sugar versus Seriphos when you have high cortisol.

Katherine shares that she has low cortisol and suspects hypoglycemia or low blood sugar, and is hesitant about using Seriphos:

My last 4 point cortisol test showed mine is low throughout the day. But I’m having episodes where I’m waking up in the mornings feeling a jolt (every time I wake up from sleeping) and sometimes also shaky and anxious.

A functional pharmacist suggested my blood sugar may be dropping during the night and hypoglycemia could cause an adrenaline surge.

I don’t know. I’m nervous to try something [such as Seriphos] to lower cortisol when it seems mine is already too low.

I agree with her functional pharmacist that hypoglycemia is likely a factor as it often is with adrenal dysfunction and low cortisol. And I am glad Katherine is being cautious about using Seriphos.

I shared that Seriphos is not the solution in this instance because she doesn’t have high cortisol based on her adrenal saliva test (4 collections). Instead, she has low cortisol throughout the day and using Seriphos would lower her cortisol even further. What many folks don’t realize is that high cortisol and low cortisol can lead to similar symptoms of anxiety, shakiness and waking in the night and early hours.

The good news is it’s relatively easy to figure out if low blood sugar is causing your symptoms. First I have clients rate their symptoms on the low blood sugar questionnaire and do a trial of glutamine. Next is figuring out the dosing and timing of glutamine, looking at a current food log and making dietary changes as needed.

If Katherine notices improvements – typically seen within a week – it’s very likely that hypoglycemia is a factor.

Finally, if additional support is needed for her anxiety I’d consider looking at low GABA and low serotonin symptoms and doing a trial of GABA and/or tryptophan.

Longer term solutions include all the dietary changes mentioned in my book – gluten-free, no sugar, no caffeine or alcohol, using nutritional support for the adrenals and addressing toxins, infections, trauma etc.

Low blood sugar symptoms

First I have clients rate their symptoms on the low blood sugar questionnaire and do a trial of glutamine if they have low blood sugar symptoms.

Here are the low blood sugar symptoms which are rated on a scale of 1 to 10, with 10 being most severe:

Crave sugar, starch or alcohol any time during the day
Irritable, shaky, headachey – especially if too long between meals
Intense cravings for sweets
Lightheaded if meals are missed
Eating relieves fatigue
Agitated, easily upset, nervous
Waking in the night or early hours with a jolt of anxiety/shakiness

If the ratings indicate the possibility of low blood sugar i.e. any cluster of the above symptoms, we do a trial of the amino acid glutamine on the tongue and record before and after ratings of a few symptoms.

Glutamine is a key amino acid for blood sugar stability and helps quickly while the adrenals heal and the dietary changes are figured out.

Glutamine for low blood sugar: dosing and timing

Typically 500 mg glutamine is a good starting dose. I see many folks start too high, like 5000 mg / 5 g and up multiple times a day, and it’s not necessary. However, we increase based on individual needs and you may find you do need to use 500 mg -1000 mg two to three times a day. Using a glutamine powder is a great way to use it especially if you find you do need more than 500 mg each time.

When you use glutamine powder directly on the tongue (rather than mixed in water), the benefits are seen almost immediately.

For someone like Katherine, using glutamine throughout the day may set her up for night time or early morning low blood sugar. She may also find she needs to use some glutamine just before bed too.

GABA and/or serotonin support too?

Depending on the causes of her anxiety and shakiness, in addition to glutamine, Katherine may need to consider GABA and/or tryptophan too. We use the low GABA and low serotonin symptoms questionnaire and do trials of GABA and/or tryptophan/5-HTP.

All three amino acids can be used before bed and during the night if needed but trials are best done one at a time.

Glutamine for low blood sugar, healing the gut, to reduce sugar cravings and for better sleep

In addition to helping with blood sugar stability and sleep issues, glutamine also helps to heal the gut and helps reduce sugar cravings. Laura shared how it’s been helping her with all of this on another blog:

I am currently struggling with gastritis (inflammation of the stomach lining) as well as a lifetime of low blood sugar and irritability. I started glutamine a few days ago (15 grams a day) and I am amazed at how it has calmed my gut as well as calmed the sugar cravings. I am also sleeping better!

I did share that 15 g is considered a high starting dose of glutamine. She may well get similar benefits with much less.

Glutamine for early morning low blood sugar and headaches

As you can see in this case, Cat finds 500 mg glutamine just once a day works well for her unique needs:

I found a powder that I mix approximately 500 mg of with water. It works within about 15 minutes and keeps me going for about 2 – 3 hours — long enough to reach a reasonable time for lunch.

I’m thrilled to have this option as anytime that I travel, low blood sugar becomes a huge issue as I suffer from ketotic hypoglycemia and end up with massive headaches and vomiting for 6-8 hours.

Dietary changes for blood sugar control and adrenal support

All my clients keep a food log and we look at what they are eating on a typical day and when. It’s key to eat in a certain way in order to control blood sugar:. breakfast on waking, healthy snacks 3 to 4 x day and some folks do well with a snack before bed. These meals and snacks should include quality animal protein and healthy fats. This is all outlined in detail in the diet and low blood sugar chapters in my book “The Antianxiety Food Solution”.

A protein smoothie in the morning is a good option too and especially helpful if you have the social anxiety condition pyroluria, where morning nausea and a low appetite is common initially. This blog highlights a research paper about breakfast smoothies helping to reduce anxiety and hypoglycemia symptoms.

Nutritional support for adrenal function includes a good B vitamin complex, extra vitamin B5/pantothenic acid, vitamin C and adaptogenic herbs such as rhodiola and ashwagandha.

Glutamine product options – capsule vs powder

If you’re not in the US, Now l-glutamine 500 mg and Doctor’s best l-glutamine powder are products I recommend on iherb (use this link to save 5%).

Additional resources when you are new to using amino acids as supplements

We use the symptoms questionnaire to figure out if low blood sugar and/or low serotonin and/or low GABA and other neurotransmitter imbalances may be an issue for you.

If you suspect low levels of any of the neurotransmitters and do not yet have my book, The Antianxiety Food Solution – How the Foods You Eat Can Help You Calm Your Anxious Mind, Improve Your Mood, and End Cravings, I highly recommend getting it and reading it before jumping in and using amino acids on your own so you are knowledgeable. And be sure to share it with the practitioner/health team you or your loved one is working with.

Have you had success with glutamine for blood sugar stability and waking with a jolt of anxiety/panic at night or in the early hours?

Have you used it for blood sugar stability, reduced cravings, leaky gut and anxiety during the day?

If yes, how much helps you? And how often do you use it?

Have dietary changes and adrenal support helped too?

If you’re a practitioner do you use glutamine and dietary approaches with clients/patients with low blood sugar?

And please let me know if it’s helpful that I’m now including product recommendations and where to get them?

Feel free to share and ask your questions below.

Glutamine for hypoglycemia/low blood sugar: “500mg mixed in water works in 15 minutes and keeps me going for 2 – 3 hours”

November 3, 2023 By Trudy Scott 27 Comments

Cat shared this feedback about how effective just 500mg of glutamine is for her low blood sugar and how quickly it helps:

I recently followed one of your posts on GABA down the rabbit hole to a linked blog post and then to another post where I found a mention of using glutamine for hypoglycemia. This is the only reference that I have read on this in 35 years of research on the subject. I follow a low carb, higher protein, healthy fat diet, but still suffer low blood sugar issues consistently at one particular time of the day. After so many years of eating a second breakfast to prevent the lows, I was ready to give any other healthy option a try.

It works!!! I found a powder that I mix approximately 500 mg of with water. It works within about 15 minutes and keeps me going for about 2 – 3 hours — long enough to reach a reasonable time for lunch.

I’m thrilled to have this option as anytime that I travel, low blood sugar becomes a huge issue as I suffer from ketotic hypoglycemia and end up with massive headaches and vomiting for 6-8 hours.

You have freed me from a huge weight! Thank you and hugs!

(And thank you for researching and sharing the tremendously helpful information in your books, webinar presentations and blogs.)

Thank you Cat for sharing your success and you are most welcome! I’m sharing this as a blog post because you may also be new to this.

Glutamine dosing, using powder vs capsules and using it on the tongue

Cat finds 500 mg glutamine works well for her unique needs. This is a good starting dose. I see many folks start too high, like 5000 mg / 5 g and up multiple times a day, and it’s not necessary. However, we increase based on individual needs and you may find you do need to use 500 mg -1000 mg two to three times a day.

Using a glutamine powder is a great way to use it especially if you find you do need more than 500 mg each time.

One thing I mentioned to Cat is when you use glutamine powder directly on to the tongue (rather than mixed in water), the benefits are seen more quickly i.e. right away rather than having to wait 15 minutes.

If you do start with glutamine capsules, be sure to open the capsule on the tongue too, But watch for fillers which can be irritating to some folks. Powders are typically glutamine-only and don’t taste bad at all. But when traveling, capsules may be a better option (at least when on a plane).

Ketotic hypoglycemia, adrenal dysfunction and breakfast

Ketotic Hypoglycemia International defines ketotic hypoglycemia as “a condition characterized by low blood sugar (glucose) and elevated ketones, typically occurring after fasting, like sleeping overnight. Ketotic hypoglycemia (KH) is not a disease itself but rather a symptom or a clinical presentation that can occur as a result of various underlying conditions.” I’ve asked Cat if she is aware as to what is causing her ketotic hypoglycemia and I’ll report back.

I have also asked if she has had salivary cortisol testing done as adrenal dysfunction plays a role in all types of low blood sugar and will need to be addressed. This can take awhile to test and figure out nutritional support. Until then, glutamine is wonderful for preventing low blood sugar episodes.

I’m also curious what her breakfasts look like and will update the blog when I find out. Cat does mention that she follows “a low carb, higher protein, healthy fat diet” so I assume her first breakfast is a good one. But it’s always something to confirm. As you can see on this blog, Anxiety and Hypoglycemia Symptoms Improve with Diet Modification, a healthy breakfast is key for blood sugar stability and preventing anxiety.

Low blood sugar symptoms and all the ways glutamine may help

This is the blog she commented on: Glutamine for calming, intense sugar cravings, gut healing and low blood sugar

I share all the symptoms we see with low blood sugar:

Crave sugar, starch or alcohol any time during the day
Irritable, shaky, headachey – especially if going too long between meals
Intense cravings for sweets
Lightheaded if meals are missed
Eating relieves fatigue
Agitated, easily upset
Nervous, anxious, panic attacks

As you can see, in addition to helping with low blood sugar symptoms, glutamine has calming properties (low blood sugar can also cause anxiety and panic attacks), helps reduce intense sugar cravings (sometimes described as a demonic urge to eat all things sweet and also helps with healing a leaky gut. Be sure to read these two blogs I’ve linked to above.

Glutamine has also been researched to help with addiction recovery. In this blog, An amino acid supplement with DLPA, glutamine and 5-HTP eases alcohol withdrawal symptoms at an inpatient detoxification program, glutamine is paired with two other amino acids.

Resources if you are new to using glutamine and other amino acids as supplements

We use the symptoms questionnaire to figure out if low blood sugar may be an issue for you.

If you suspect blood sugar or low levels of any of the neurotransmitters and do not yet have my book, The Antianxiety Food Solution – How the Foods You Eat Can Help You Calm Your Anxious Mind, Improve Your Mood, and End Cravings, I highly recommend getting it and reading it before jumping in and using amino acids on your own so you are knowledgeable. And be sure to share it with the practitioner/health team you or your loved one is working with.

There is an entire chapter on the amino acids and they are discussed throughout the book in the sections on gut health, gluten, blood sugar control (this topic has an entire chapter), sugar cravings, anxiety and mood issues.

I really appreciate Cat for sharing her story and giving me permission to share as a blog.

Has glutamine helped you with low blood sugar/hypoglycemia? If yes, in what way has it helped – reduced anxiety, less sugar cravings (or other addictions), and not as irritable and cranky/angry?

And how much helps and how quickly? Are you using it on the tongue?

Has glutamine also helped with leaky gut?

If you’re a practitioner are you using glutamine this way with your clients/patients?

Feel free to share and ask your questions below.

An amino acid supplement with DLPA, glutamine and 5-HTP eases alcohol withdrawal symptoms at an inpatient detoxification program

April 8, 2022 By Trudy Scott 18 Comments

An amino acid supplement with DLPA, glutamine and 5-HTP (and a few other nutrients) eases alcohol withdrawal symptoms at an inpatient detoxification program. Other than anxiety (I’ll share more on this below), there was also a significant decrease in psychiatric symptoms. Here is an excerpt from the study, The use of a food supplementation with D-phenylalanine, L-glutamine and L-5-hydroxytriptophan in the alleviation of alcohol withdrawal symptoms:

We described the use of a food supplementation with D-phenylalanine, L-glutamine and L-5-hydroxytryptophan in the alleviation of alcohol withdrawal symptoms in patients starting a detoxification therapy.

Since abstinence from ethanol causes a hypodopaminergic and a hypoopioidergic environment in the reward system circuits, manifesting with withdrawal symptoms, food supplements that contains D-phenylalanine, a peptidase inhibitor (of opioid inactivation) and L-amino-acids (for dopamine synthesis) were used to replenish a lack in neurotransmitters and alleviate the symptoms of alcohol withdrawal.

First I cover some translation issues and then more about the actual product and study results. I also share my commentary on the amino acids and dosing used in the study (and the fact that anxiety did not resolve). I include how to apply this information if you have a loved one in an alcohol treatment/rehab program or if you recognize social drinking is an issue for you. And I wrap up with additional resources if you are new to using GABA as a supplement, the GABA Quickstart online program and the practitioner training.

The study was completed and published in Slovenia and there are a few translation issues I’d like to clarify:

The study title states D-phenylalanine (DPA) was in the amino acid product, however DL-phenylalanine (DLPA) was actually used. You can read about the difference between DPA and DLPA here. In summary, DPLA works on both dopamine and endorphin support and DPA works on endorphin support only.
As you can see from the excerpt above, hypodopaminergic refers to low dopamine and hypoopioidergic refers to low endorphins. During withdrawal from ethanol/alcohol, both low dopamine and low endorphins cause withdrawal symptoms.
L-5-hydroxytryptophan is incorrectly spelled as L-5-hydroxytriptophan and reward system is incorrectly spelled as reword system. (Clarifications are provided for facilitating online searches in the research literature.)

More about the product, the study and the conclusion

It was a small randomized, double blind study with just 20 patients and the amino acid product was used for 40 days of the inpatient alcohol detox or rehab program.

This is the actual combination product used:

300 mg DLPA

150 mg glutamine

5 mg 5-HTP

1 mg vitamin B6

50 mg calcium gluconate

25 mg magnesium oxide

0.01 mg folic acid

Psychiatric symptoms were measured using the SCL- 90R and included assessing for “somatization, obsessive-compulsive, interpersonal sensitivity, depression, anxiety, hostility, phobic anxiety, paranoid, and psychoticism.” During their rehab there was a significant decrease in these categories of psychiatric symptoms in the study group, except for their anxiety symptoms.

The authors conclude that “abstinence causes a major stress for the patients. The use of a food supplement containing D-phenylalanine [it was actually DL-phenylalanine], L-glutamine and L-5-hydroxytryptophan alleviates the withdrawal symptoms.”

As expected, once alcohol consumption was stopped, cortisol levels, liver enzymes and total bilirubin all decreased in the study group and the control group.

My commentary on the amino acids and dosing used in the study (and the fact that anxiety did not resolve)

Keep in mind the same dosing was used for all study participants. What I use clinically with folks with low levels of these neurotransmitters, is an individualized approach based on each person’s needs, for endorphin and dopamine support (from the DLPA), blood sugar support (from glutamine) and serotonin support (from 5-HTP). This means identifying symptoms in each category and doing a trial of each respective amino acid, starting low and increasing based on symptom resolution.

Given that anxiety symptoms didn’t resolve in the study group, I would have loved to see the amino acid GABA included, also dosed according to individual needs. GABA helps ease the physical tension-type anxiety and low GABA tension often drives the need to self-medicate with alcohol in order to relax and fit in socially.

The authors do mention GABA too: “the physiological craving for alcohol may be the result of a deficiency of the naturally occurring opiate like substances as well as other neurochemical deficits (i.e., dopaminergic, GABAergic, and serotonergic).

Also, an animal study shows that GABA helps with gut damage caused by alcohol consumption, so there is this additional benefit.

A higher dose of glutamine and/or 5-HTP may have also helped ease anxiety. They used 150 mg glutamine whereas a typical starting dose for glutamine is 500 mg (and we increase from there). Going up to 1000 mg to 1500 mg three or 4 times a day is not unusual and is typically very beneficial for alcoholics – for blood sugar stability, an additional calming effect and for healing the leaky gut which has been damaged by the alcohol consumption.

With regards to 5-HTP, they used 5 mg 5-HTP which is considered extremely low. I wonder if it was in fact 50 mg, which is a typical starting dose? Going up to 150 mg 5-HTP use 2 or 3 times a day is not unusual. Serotonin support with 5-HTP (or tryptophan) is very beneficial for the worry-type of ruminating anxiety.

For some individuals DLPA may have been too stimulating and contributing to anxiety via a dopamine boost. For these individuals, DPA may have been a better option for endorphin support.

I am not in favor of folic acid and prefer methylfolate, and although magnesium is an important cofactor for neurotransmitter production, magnesium oxide does not provide much usable magnesium.

Outside of the amino acids and other nutrients used, a vitamin B1 (thiamine) deficiency would need to be addressed and any other deficiencies (such as all the B vitamins, zinc, vitamin D, magnesium etc.) caused by chronic alcohol consumption. This is not a comprehensive list and a full functional workup will help to identify all possible deficiencies.

Despite my quibbles, the outcome of the study is very encouraging, I appreciate the researchers and I hope to see it replicated and refined in other settings.

How to apply this information if you have a loved one in an alcohol treatment/rehab program

Unfortunately the amino acids are seldom incorporated at in-patient detox and rehab centers but they should be. Your options are to:

Share this study and my blog with the treatment center
Educate yourself (on using the questionnaire and doing the amino acid trials) so you can use them with your loved one once rehab is over. This is key for preventing a relapse and for swapping alcohol addiction for sugar or caffeine or nicotine addiction.
Introduce one amino acid at a time so you can figure out which one/s they need and how much
Read my book, The Antianxiety Food Solution – How the Foods You Eat Can Help You Calm Your Anxious Mind, Improve Your Mood, and End Cravings, and share a copy with the treatment center (and your loved one and their treatment team)
Address diet, nutritional deficiencies and gut health

Keep in mind that the amino acids are used with success for cocaine, heroin and other drug addictions.

How to apply this information if you recognize social drinking is an issue for you

New research shares that “low-level alcohol consumption is commonly perceived as being inconsequential or even beneficial for overall health, with some reports suggesting that it may protect against dementia or cardiovascular risks”, however, as the authors suggest “even low-level alcohol consumption is associated with premature brain aging.”

Social drinking is the norm and is way too prevalent. And it’s often used as a calming measure in order to relax and fit in socially. If this sounds like you:

Educate yourself (on using the questionnaire and doing the amino acid trials) so you can use them to quit drinking easily with no willpower and no feelings of being deprived. This is key for preventing the swapping out the need for alcohol (to relax or fit in socially) with a sugar or caffeine or nicotine addiction. In this case, GABA helps a young man who has recently given up alcohol, Adderall and nicotine.
Introduce one amino acid at a time so you can figure out which one/s you need and how much
Read my book, The Antianxiety Food Solution – How the Foods You Eat Can Help You Calm Your Anxious Mind, Improve Your Mood, and End Cravings, and share a copy with your loved one/spouse/partner and practitioners/therapists.
Address diet, nutritional deficiencies and gut health

Resources if you are new to using the amino acids as supplement

If you are new to using the amino acids as supplements, here is the Amino Acids Mood Questionnaire from The Antianxiety Food Solution (you can see all the low neurotransmitter symptoms).

If you suspect low levels of any of the neurotransmitters and do not yet have my book, The Antianxiety Food Solution – How the Foods You Eat Can Help You Calm Your Anxious Mind, Improve Your Mood, and End Cravings, I highly recommend getting it and reading it before jumping in and using amino acids on your own so you are knowledgeable. And be sure to share it with the team you or your loved one is working with.

There is a section on alcohol but keep in mind that all the sections on sugar craving/addiction apply to alcohol addiction and self-medicating with alcohol too. Some individuals use alcohol to numb out and some use sugar. Many use both and once alcohol addiction is addressed, it’s often replaced with sugar and caffeine addiction. This is why addressing neurotransmitter imbalances is key.

If you don’t feel comfortable reading my book and figuring things out on your own (doing the symptoms questionnaire and doing respective trials), you can get guidance from me in the GABA Quickstart Program (online/virtual).

If you are a practitioner, join us in The Balancing Neurotransmitters: the Fundamentals program. It’s an opportunity to interact with me and other practitioners who are also using the amino acids.

Have you used amino acids with success as part of an alcohol detox program (for yourself or for a loved one)? Or to help stop social drinking of alcohol?

Which neurotransmitter imbalances were driving your need to self-medicate with alcohol and which amino acids helped?

If you’re a practitioner do you use the amino acids (via an individualized approach) to help with alcohol withdrawal and cessation with your patients and/or clients?

Feel free to ask your questions here too.

“A demonic urge to eat sugar and all things sweet”: glutamine opened onto the tongue stops the urge every time!

October 1, 2021 By Trudy Scott 15 Comments

In my interview, Glutamine, DPA & Tyrosine for Anxiety & Sugar Cravings, on the Anxiety Summit 5: Gut-Brain Axis, I share the story of a client of mine who described her sugar cravings as an “almost demonic urge to eat sugar and all things sweet.”

Before working with me she had been trying to control her blood sugar levels by eating the right foods at the right times i.e. healthy fats and quality protein (especially at breakfast). But this wasn’t enough to eliminate her sweet cravings. She would make and eat sweet treats all day long, using “healthier” sweeteners like monk fruit and maple syrup.

The solution was using 500mg of glutamine opened onto her tongue. I had the same conversation that I have with all my clients who would obviously rather eat something sweet than open a glutamine capsule onto their tongue: “If you have an intense craving for something sweet, tell yourself that you’re going to indulge, but also humor your nutritionist and take the glutamine anyway. You may be surprised to find your urge completely disappears.”

She did that and it worked – it stopped her demonic urge to eat something sweet every time and very quickly!

As a reminder here are the signs of low blood sugar –

Anxiety and mood:

Nervous, anxious, panic attacks
Irritable, shaky, headachey – especially if you go too long between meals
Lightheaded if meals are missed
Agitated, easily upset
Eating relieves fatigue

Sugar cravings:

Crave sugar, starch or alcohol any time during the day
Very intense cravings for sweets/sugar

I also share an excerpt from this March 2021 paper, The role of glutamine in supporting gut health and neuropsychiatric factors, highlighting the role of glutamine in gut health and depression/anxiety, and the gut-brain connection:

Glutamine can positively affect gut health by supporting the gut microbiome, gut mucosal wall integrity, and by modulating inflammatory responses.

As modulated by the vagus nerve, via the enteric nervous system, the gut-brain connection can impact the brain’s neurochemical environment.

Poor gut health can disrupt the balance of neurotransmitters, which can result in neuropsychiatric based conditions such as depression [and anxiety].

Glutamine supplementation may provide significant adjunctive nutritional support in cases of depression [and anxiety] by promoting proper gut health.

Here are all the topics I cover in my interview:

Sugar addiction: impacts on the microbiome, tryptophan metabolism, zinc & B vitamins
Glutamine for intense sugar cravings, anxiety & support of the microbiome/mucosa
DPA for comfort/reward cravings, pain & acute stress
Tyrosine for focus & calm energy

Dr. Aimie Apigian, MD, kindly interviewed me. She is also a guest expert on the summit so be sure to tune into her excellent interview too: The Biology of Trauma and the Freeze Response.

I encourage you to tune in if you have:

Anxiety & feel overwhelmed & stressed by little things
Panic attacks &/or obsessive thoughts or behaviors
Social anxiety/pyroluria
Phobias or fears (flying, spiders or even driving on a highway)

And also if you suffer from…

Food sensitivities, IBS/SIBO, parasites or gallbladder issues
Constipation, diarrhea, bloating, gas, pain & other digestive issues
Leaky gut, a leaky blood-brain barrier or vagus nerve issues

Join us if you are also an emotional eater with intense sugar cravings (and know you suffer from low blood sugar), experience insomnia, low mood, PMS, poor focus and/or low motivation.

This is THE online event to learn about the powerful individual amino acids – GABA, theanine, tryptophan, 5-HTP, glutamine, DPA and tyrosine – to quickly ease anxiety and help with gut symptoms while you are dealing with other root causes which take longer to address. (They also help with cravings as with this example, and sleep and immunity).

With research-based anxiety nutritional solutions and practical steps, you can determine your root causes, ease your anxiety and prevent it from coming back so you can feel on top of the world again!

If you are a practitioner, please join us too and find advanced solutions for your clients or patients too!

You’ve heard me say the Anxiety Summit has been called “a bouquet of hope!” My wish for you is that this summit is your bouquet of hope!

I hope you’ll join me and these incredible speakers, be enlightened and find YOUR solutions! More about this summit and other Anxiety Summits here.

Here’s to no more anxiety and you feeling on top of the world again!

Please share if glutamine has helped you with low blood sugar symptoms such as an intense desire for something sweet.

Feel free to post your questions here too.

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