Does GABA offer gut protection after drinking alcohol?

A paper published earlier this year has us asking the question: will oral GABA supplementation offer gut protection in humans who drink too much alcohol? It’s too soon to know but the results from the animal study leave me spell-bound by this calming amino acid yet again!

The paper, Gastroprotective effect of gamma-aminobutyric acid on ethanol-induced gastric mucosal injury

aimed to investigate the gastroprotective effect of gamma-aminobutyric acid (GABA) on ethanol-induced gastric mucosal injury and gastric epithelial cells injury [in rats].

Ethanol or alcohol is known to damage the gut and the study was carried out on rats given GABA and then ethanol.

It was also tested using the human gastric epithelial cell line GES-1 (more here on how human cell lines are commonly used in research) which was incubated with GABA and then treated with ethanol to induce cell injury.

The use of GABA prior to treatment with ethanol

showed that GABA pretreatment significantly reduced gastric ulcer index in a dose-dependent manner.

Administration with GABA could not only remarkably restrain oxidative stress by increase of superoxide dismutase, catalase activities and decrease of malondialdehyde content in gastric tissue and cells, but also significantly reduced pro-inflammatory factors activities (interleukin-6 and tumor necrosis factor α) in gastric tissue.

These studies clearly provided evidence that GABA had a considerable gastroprotective effect on ethanol-induced gastric mucosal injury and gastric epithelial cells injury. The underlying mechanism of mitigating lesions may be ascribed to the improvement of anti-inflammatory and anti-oxidant status as well as the increases of PGE2 [prostaglandin E2] and NO [nitric oxide] levels.

In summary, the use of GABA shows the potential for less ulcers, less oxidative damage, less inflammation in the gut, and gastroprotective properties after alcohol consumption. Human studies will show if oral GABA supplementation offers gut protection in those who drink too much alcohol.

Many social drinkers are not connecting their drinking to stress

We are a stressed society and this leads a great deal of “social” drinking. Many social drinkers are not connecting their drinking to stress and their need to self-medicate and de-stress.

As I found when I posted new study this on facebook – Moderate alcohol consumption as risk factor for adverse brain outcomes and cognitive decline – many social drinkers also get upset when you point out research like this because they don’t want to have to give it up. This CNN article, Moderate drinking may alter brain, summarizes the study and reports that the

moderate group was drinking about 14 to 21 units of alcohol per week, or about a medium glass of wine each night, plus a little extra on the weekends.

Update: Dec 2025
This 2024 paper, A qualitative analysis investigating drinking practices and meanings among a sample of Australian working mothers, explores the emotional/stress connection and how alcohol is their escape and coping tool:

Women felt they had to be available to both their employers and their children at the same time. For some, this led to internalized feelings of guilt and fatigue, increasing women’s desire to drink, and limiting their capacity to be mindful of the amount of alcohol they were consuming.

Women also described feeling overloaded and under-supported, where alcohol was viewed as being relaxing and rewarding, as well as a way to escape, cope, and recover from their day-to-day stressors.

Furthermore, through a combination of targeted marketing and broader social normalisation, women felt alcohol was presented as a solution to stress and problems among working mothers.

GABA also helps reduce your need to self-medicate or self-soothe with alcohol (or sugar/carbs)

What is so interesting is that this very same calming amino acid, GABA, when used to address low GABA levels can help reduce your need to self-medicate or self-soothe with alcohol (or sugar/carbs). Don’t forget, with low GABA levels, you’ll also experience physical anxiety, stiff and tense muscles, overwhelm and panic attacks. I recently blogged about GABA here: GABA for the physical-tension and stiff-and-tense-muscles type of anxiety

Of course, I’d recommend using GABA supplements to address the low GABA and prevent so much “social” drinking that may damage to the gut (i.e. addressing the root cause as always), rather than using GABA to prevent gut damage when you do drink.

If you are a big “social” drinker and choose the latter (use GABA to prevent gut damage when you do drink) be warned, you’ll feel calmer and less stressed and very likely reduce your desire and need for a drink!

My blog mentions “social” drinking because of the paper about moderate alcohol consumption above but all this could be equally applicable to heavy drinkers and alcoholics too.

In summary, the amino acid GABA can achieve the following:

• help you quit alcohol and not feel deprived and having to use willpower
• leave you feeling calm and stress-free with no need to self-medicate with alcohol
• heal damage caused to your gut if you do indulge once in awhile (based on projections from the above research)

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. Another option is the budget-friendly GABA QuickStart Homestudy program.

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 like to hear from you

Do you drink alcohol in order to relieve your stress?

Have you noticed that GABA reduces your need to drink alcohol?

And have you noticed any improvements in gut health since using GABA?

Feel free to post your questions below.