
I started GABA 750mg and think it gently chills out my anxiety a bit, however 20 minutes after I take it, I feel flushed and itchy in my face and neck. This lasts for 5 minutes and then goes away.
I am in a migraine program with a health coach who has referenced your book several times. She recommended I stop it because it sounds like an allergy. I personally would think it would last longer if it was an allergy.
What do you think? Have you heard of this reaction before? I thought it would maybe get better as my body gets used to taking it? I wanted to continue because I think it’s helping. Thank you.
Sharon posted the above feedback about her promising calming results with GABA and her flushed/itchy question on one of the blogs. She also asked this:
Just read other posts and I’m just beginning to learn all of this info on your site. I’m also getting your book. Looks like I may have started too high? Could I open up one of my capsules and just take powder orally and then work up?
Read on below to learn more about the fact that too much GABA does cause flushing; the correct approach, dose and sublingual use of GABA for Sharon; Holly’s similar story with 750mg GABA; and GABA, serotonin and endorphin support for Sharon’s other symptoms (headaches, migraines, PMS, sleep issues and rectal spasms); plus additional resources when are new to amino acids such as GABA, 5-HTP, DPA and others.
Too much GABA does cause a flush feeling
Firstly, it’s wonderful that GABA gently chills out Sharon’s anxiety a bit. And she is correct – her flush and itchy face and neck is unlikely to be an allergic reaction. Too much GABA does cause a niacin-like flush or tingling feeling and yes, I have heard of this reaction many times. Unfortunately it leads to many people giving up on GABA when they really do need it.
Sharon shared this: “I thought it would maybe get better as my body gets used to taking it?” Unfortunately, many individuals think the same and end up pushing through the discomfort and it’s not what I advise. She was wise in exercising caution and finding out by reading more on the blog, getting a copy of my book, The Antianxiety Food Solution and asking on the blog.
I have no idea why supplement companies produce such a high dose GABA product and it’s something I caution all my clients and GABA Quickstart program participants about.
The correct approach, dose and sublingual use of GABA for Sharon
Sharon also acknowledges she probably started with too high a dose and asks about opening up the GABA capsule and working her way up. This is exactly what we need to do to get results with GABA and not cause new issues.
Some other options to opening the GABA capsule could be:
- a GABA only powder
- a GABA sublingual product (such as GABA Calm)
- a liposomal GABA product
- a GABA cream (she reported migraines and neck tension so a cream may be a good option for her too)
I also have clients start with only one amino acid product and find the ideal dose before adding the next amino acid acid. And track results carefully so they can course correct, adjusting up or down as needed.
Sharon did come back and comment a week later sharing this adjustment she had made:
So I have been opening the GABA capsule and taking half a dose (so 375mg) on my tongue in the morning and then in the afternoon. I don’t notice the real calm like I did with the whole capsule though.
She’s on the right track and the next step could be to use three-quarters of a dose twice a day and see how that helps. Another option is half a dose, maybe 4 x day. There is no one-size fits all and it’s a matter of Sharon finding what works best for her unique needs.
Keep in mind that for some individuals even 375mg is too high a dose. I typically have clients start with 125mg GABA and less if they are super-sensitive.
Holly’s story with 750mg GABA is very similar
I’ve actually blogged about this before: Too much GABA causes a tingling niacin-like flush sensation (in the brain and body). It’s awful and very uncomfortable!) and shared Holly’s niacin-like flush result when using the same dose:
I experienced the niacin-like flush when I tried to go from GABA Calm [mostly dissolved in my mouth] to a pill form and didn’t realize the dosage would be way too high all at one time. The pill was 750 mg GABA [and swallowed with food], so it wasn’t going to work well anyway.
The flush lasted about 15-20 minutes. It was awful. I was sure I was going to throw up every time.
It took me a couple of weeks to figure out the cause. My therapist recommended your website and book and those helped me understand when to take it and why it would help.
When I eliminated the 750 mg GABA pill the symptoms completely went away.
Now I stick to GABA Calm. I take one in the morning and one before bed and sometimes one midday.
You can read more about this flush feeling on the above blog and another example.
GABA, serotonin and endorphin support for Sharon’s other symptoms
Sharon also has headaches, migraines, PMS, sleep issues and rectal spasms:
I’ve got chronic headaches and frequent migraines. Other weird symptoms are lip dermatitis, hormone imbalance, PMS, and rare rectal spasms which I saw referenced on your site too. Serotonin issues too and I also recently started 5-HTP 200mg at night which seems to be helping my PMS insomnia.
It’s great that 5-HTP is helping her PMS-related sleep issues. Both GABA and 5-HTP (for serotonin support) may help with her hormone balance, which in turn, may help with her headaches and migraines too. She may also want to consider a trial of d-phenylalanine/DPA for endorphin support/pain relief. GABA itself helps to ease neck tension and headaches.
GABA does stop very painful rectal spasms very quickly. More about this here – GABA lozenge relieves excruciating pelvic floor/rectal pain and spasms within 30 seconds: a solution for proctalgia fugax.
As I mentioned above, I have clients and those in the GABA Quickstart program start with GABA and find the ideal dose before adding the next amino acid acid. For Sharon, I’d recommend that she finds her ideal dose of GABA before bumping up her 5-HTP and adding DPA.
Additional resources when you are new to using GABA or other amino acids as supplements
We use the symptoms questionnaire to figure out if low GABA (indicating a possible need for GABA or theanine) or low serotonin (indicating a need for tryptophan or 5-HTP) or low endorphins (indicating a possible need for DPA) 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, 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). This is a paid online/virtual group program where you get my guidance and community support.
If you also 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…
I appreciate Sharon and Holly for sharing their experiences and asking questions. I’m hoping their stories have enlightened you!
And I am thrilled that her migraine health coach referenced my book and told her about GABA. It’s a great book that many practitioners share with their clients and patients.
Have you experienced this uncomfortable feeling when using too much GABA? And did you learn to use less in order to get the calming benefits of GABA?
How much do you find helps? And do you use powder or capsules opened or liposomal or cream?
Has serotonin or endorphin support helped too?
Feel free to share and ask your questions below.




