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Dietary supplement

Gaba- S Ingredients & Drug Interactions

by Nutri-West

Gaba- S label
See full label image
Tablet Or Pill Category: Non-nutrient/non-botanical
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 9, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Gaba- S against your medications. The heart of this page is the interaction checker and the full interaction report — how this product’s ingredients may interact with prescription and over-the-counter medicines you may be taking.

Around that, we add a pharmacist’s high-level view of the product as a whole — what’s inside, the evidence for its stated use, how transparent the label is, and what safety data exists — so you can see the full picture in one place. It’s educational information from our licensed clinical databases and the clinical staff at HelloPharmacist — not medical advice — and we don’t sell or endorse products. Our editorial policy

The interaction bottom line Most serious interaction: Moderate

Gaba- S is a dietary supplement by Nutri-West with 1 active ingredient. Its ingredients are commonly taken for anxiety and stress, sleep problems, relaxation.Based on those ingredients, 419 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are GABA. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against Gaba- S by Nutri-West

Ask about any prescription or over-the-counter medication and we check it for interactions with Gaba- S by Nutri-West — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Gaba- S by Nutri-West

Our pharmacy team’s full take, with four database checks built into the cards below — a summary of what is known, not a grade of the product itself.

From our pharmacy team — supplement deep dive

Generated from HelloPharmacist’s pharmacist-curated databases and editorial rules · Last generated Jul 30, 2026

What’s inside

Full disclosure
Ingredient Transparency · database check
Full

Every active ingredient lists its own amount on the label.

Why this rating?
  • The label discloses an exact amount for 1 of its 1 active ingredient.
  • No proprietary blends here — you can verify the dose of every single component.

Nutri-West Gaba-S is a single-ingredient supplement containing GABA (gamma-aminobutyric acid), a naturally occurring compound in your brain that plays a role in relaxation and nerve signaling. The product contains 1 active ingredient with no inactive fillers or other ingredients listed.

Does it work?

Couldn't assess
Evidence for Intended Use · database check
By FDA rules, dietary supplements can’t claim to treat, cure, or prevent disease — so labels speak in careful marketing language. We discern each product’s intended use from its name, label claims, and label statements, then grade the clinical evidence for that use. How these ratings are computed
Not assessable

This is a single-ingredient Gamma-aminobutyric Acid (gaba) product and its label doesn't state a use — see Gamma-aminobutyric Acid (gaba)'s own graded uses on its monograph.

Why this rating?
  • We looked at the product name, claims, and label statements and couldn't find a stated purpose to grade.

The evidence for GABA supplementation is insufficient across the uses that have been studied — anxiety, ADHD, athletic performance, chronic bronchitis, and cerebral palsy all lack reliable evidence to show whether it works. We hold no data on other possible uses.

If you're considering GABA for a specific concern, it's worth discussing with your doctor or pharmacist whether the evidence supports it for your situation.

The evidence, ingredient by ingredient Gamma-aminobutyric Acid (gaba)

How safe is it?

Well-documented data
Safety Information · database check
Well characterized

Adverse-effect, pregnancy, and general safety data are on file for most of these ingredients.

Why this rating?
  • We hold adverse-effect (side-effect) data for 1 of the 1 matched ingredient.
  • Pregnancy & breastfeeding safety ratings cover 1 of 1.
  • General safety write-ups exist for 1 of 1.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

GABA appears to be generally well tolerated when taken by mouth short-term, though long-term safety hasn't been well studied. The most commonly reported side effects in trials were drowsiness, stomach upset, minor throat burning, muscle weakness, and nausea.

One case of temporary amenorrhea (loss of menstruation) was reported in a patient taking GABA with another supplement. There isn't enough safety information to recommend GABA during pregnancy, and the available data advises against use while breastfeeding.

Talk with your doctor or pharmacist about whether it's appropriate for you.

Side effects, ingredient by ingredient Gamma-aminobutyric Acid (gaba)

Meds to double-check

Moderate interaction found
Known Interaction Concern · database check
Moderate identified

The most serious documented interaction for these ingredients is Moderate. Check your medications for a personalized result.

Why this rating?
  • 1 of the 1 matched ingredient can interact with medications — Gamma-aminobutyric Acid (gaba).
  • The most serious interaction on file is rated Moderate.
  • For scale: 419 individual medications appear in the full list. A big number alone doesn't make a product dangerous — what matters is whether YOUR medication is on it, so run yours through the interaction checker on this page.

Before taking Nutri-West Gaba-S, double-check if you're on blood pressure medications (antihypertensives) — GABA may lower your pressure further. Also check if you take central nervous system depressants like prescription sleep aids, sedatives, or pain medications, as GABA may add to their sedative effects.

Run your medications through the search tool on this page.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with no assessable stated purpose. Moderate medication interactions have been identified, and safety information is well characterized.

GABA is a single-ingredient supplement that appears generally well tolerated in the short term, but evidence for its effectiveness is lacking across studied uses. If you take blood pressure medication or sedatives, check with your doctor or pharmacist before starting, as GABA may enhance their effects.

Long-term safety is unclear, so this is worth discussing with your healthcare provider before use.

Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI

Assessment coverage: 1 of 1 active ingredient matched to our full ingredient reviews (monographs). Based on the product label dated Nov 25, 2013.

This Scorecard evaluates available label information, ingredient evidence, and known medication-safety considerations. It does not independently verify product identity, purity, potency, contamination, or manufacturing quality. How these ratings are computed

At a glance

General information

Key facts about Gaba- S, straight from the product label.

Brand Nutri-West
Net contents 90 Tablet(s)
Market status On market
Date entered into DSLD Nov 25, 2013
DSLD ID 27712
Product type Non-nutrient/non-botanical
Supplement form Tablet Or Pill
Dietary claims / uses All Other
Intended target group(s) Adult (18 - 50 Years), Dairy Free, Sugar Free
From the label
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.

Supplement Facts

The label details for Gaba- S by Nutri-West, sourced from the NIH Dietary Supplement Label Database.

Supplement Facts

Daily Value (DV) Target Group(s):
Adults and children 4 or more years of age
Minimum serving Sizes:
1 Tablet(s)
Maximum serving Sizes:
1 Tablet(s)
IngredientAmount% DV
GABA250 mg--

Tap any ingredient to jump to its full detail below.

Label statements
These statements are the manufacturer’s wording, reproduced from the product label — the label is saying it, not HelloPharmacist. We don’t verify or endorse them.
Formulation

Contains no starch, salt, sugar, wheat, corn, yeast, soy, milk, or preservatives.

Storage

Store in cool, dry place.

Precautions

KEEP OUT OF REACH OF CHILDREN.

TAMPER RESISTANT OUTER SEAL - DO NOT USE IF BROKEN.

FDA Statement of Identity

Dietary Supplement

General Statements

"When You Want The Best"

0080 MGF01/2010

FOR DISTRIBUTION BY HEALTH CARE PROFESSIONALS ONLY.

Suggested/Recommended/Usage/Directions

Directions for use: One tablet daily, or as directed.

General

Product # 1297

Is this label outdated? Report a formula or label change and our pharmacy team will review it.

See for yourself

Gaba- S by Nutri-West label

The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.

Gaba- S label

Label images are published by the NIH Dietary Supplement Label Database for the version of this product on file. Always read your actual product label.

View the full label (PDF)
What’s inside

The Ingredients in Gaba- S by Nutri-West

This is the 1 active ingredient this product is made of. Select it to open its full monograph.

Serving size1 Tablet(s) Dosage formTablet Or Pill Amounts shown are per serving.

GABA

Interacts with
419 drugs
250 mg per serving

GABA is a calming chemical messenger (neurotransmitter) that your body makes on its own, and it is sold as a supplement for stress, anxiety, and sleep...

GABA monograph & interactions
Interaction report

Gaba- S by Nutri-West Drug Interactions

Want to check YOUR meds against Gaba- S?

Ask about interactions with your drugs in plain English — “Can I take it with lisinopril?” — and we find you the answer in seconds, ingredient by ingredient.

 Go to the checker
419Drugs
172 Moderate 247 Minor

Ingredients driving the most interactions

GABA 419

Individual Drug Interactions

The ingredients in Gaba- S interact with 419 drugs. Click any drug to see the details.

1 of the 1 ingredient in Gaba- S interact with drugs. Each result below shows which ingredient is responsible. GABA

Each ingredient & the kinds of drugs it affects

For each ingredient in Gaba- S with known interactions, here are the types of medications it can affect. Open any type for the detail — or search your exact drug in the checker above.

GABA2 drug types · 419 drugs

Antihypertensive Drugs

Theoretically, taking GABA with antihypertensive drugs might increase the risk of hypotension.
Some clinical research shows that GABA can decrease blood pressure in patients with hypertension.

Likelihood Possible Evidence B
Cns Depressants

Theoretically, GABA might have additive sedative effects when used in conjunction with CNS depressants. However, it is unclear if this concern is clinically relevant.
Endogenous GABA has well-established relaxant effects and GABA(A) receptors have an established physiological role in sleep. However, the effects of GABA supplements are unclear, as it is unknown whether exogenous GABA crosses the blood-brain barrier. Although there have been limited reports of drowsiness or tiredness with GABA supplements, these effects have not been widely reported in clinical studies. Additionally, intravenous GABA 0.1-1 mg/kg has been shown to induce anxiety in a dose-dependent manner.

Likelihood Unlikely Evidence D
GABA full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Gaba- S, from the product label.

Nutri-West

See all Nutri-West products
Name
Nutri-West
City
Douglas
State
Wy
ZipCode
82633
Pharmacist Counseling Corner

Gaba- S by Nutri-West: Common Questions

Does Gaba- S by Nutri-West interact with any medications?
Yes. Based on its ingredients, Gaba- S has a known interaction with 419 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Gaba- S contains a single active ingredient, and that one ingredient can interact with many different medications on its own. We check it against each medication and show the mechanism responsible.
Where does this information come from?
The product label data comes from the NIH Dietary Supplement Label Database (DSLD); the interaction data is built on the Natural Medicines database and reviewed by HelloPharmacist pharmacists.
What is GABA and what does it do in my body?
GABA (gamma-aminobutyric acid) is a naturally occurring compound in your brain that helps with relaxation and nerve signaling. This supplement provides it in oral form, though it's not clear how much of an oral GABA supplement actually reaches your brain.
Will GABA help with my anxiety?
There isn't enough reliable evidence to say whether GABA supplements work for anxiety. If you're interested in trying it, talk with your doctor or pharmacist first, especially if you're already taking other medications.
What side effects might I experience?
The most common side effects reported in trials were drowsiness, stomach upset, minor throat burning, muscle weakness, and nausea. GABA appears generally well tolerated overall, but a thorough safety evaluation hasn't been completed.
Is GABA safe to take long-term?
Short-term use appears well tolerated, but long-term safety hasn't been well studied. If you're considering taking GABA regularly, discuss it with your doctor or pharmacist to weigh what we know against your individual situation.
Can I take GABA if I'm pregnant or breastfeeding?
There isn't enough safety information to recommend GABA during pregnancy. The available data advises against use while breastfeeding. Talk with your doctor or pharmacist about what's appropriate for you.

Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy

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Label information is sourced from the NIH Dietary Supplement Label Database and reflects the product version on file; always read your actual product label. This page is for education only and is not a substitute for professional medical advice. Confirm with your pharmacist or doctor before combining supplements and medications.

Gaba- S label
Go deeper

The Full Monographs Behind Gaba- S’s Ingredients

Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.

Herb & supplement monograph

Gamma-aminobutyric Acid (gaba)

Interacts with 419 drugs

GABA is a calming chemical messenger (neurotransmitter) that your body makes on its own, and it is sold as a supplement for stress, anxiety, and sleep. The science behind oral GABA supplemen...

Read the full Gamma-aminobutyric Acid (gaba) monograph →
Sources

Sources & How We Checked

Gaba- S's label data comes from the NIH Dietary Supplement Label Database; the ingredient interaction data is from the Natural Medicines database, reviewed by our pharmacists.

Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.

The 12 references behind this product’s interaction data

Every citation that drives the interaction findings for this product’s ingredients, from the evidence-graded Natural Medicines (TRC Healthcare) database. Open an ingredient to browse its citations — links open the study on PubMed or the publisher’s site.

Gamma-aminobutyric Acid (gaba) 12 references
  1. Cavagnini F, Invitti C, Pinto M, et al. Effect of acute and repeated administration of gamma aminobutyric acid (GABA) on growth hormone and prolactin secretion in man. Acta Endocrinol (Copenh) 1980;93:149-54.
  2. Nurnberger JI Jr, Berrettini WH, Simmons-Alling S, et al. Intravenous GABA administration is anxiogenic in man. Psychiatry Res 1986;19:113-7. PubMed
  3. Gershman RN, Vasilenko MA, Iliushina GG, et al. [Gammalon in the rehabilitation in infantile cerebral palsy]. Pediatr.Akus.Ginekol. 1977;(6):26-7.
  4. Loeb C, Benassi E, Bo, GP, et al. Preliminary evaluation of the effect of GABA and phosphatidylserine in epileptic patients. Epilepsy Res. 1987;1:209-12 . PubMed
  5. Inoue K, Shirai T, Ochiai H, et al. Blood-pressure-lowering effect of a novel fermented milk containing gamma-aminobutyric acid (GABA) in mild hypertensives. Eur J Clin Nutr 2003;57:490-95.
  6. ELLIOTT, K. A. and JASPER, H. H. Gammaaminobutyric acid. Physiol Rev. 1959;39(2):383-406.
  7. Winsky-Sommerer, R. Role of GABAA receptors in the physiology and pharmacology of sleep. Eur.J.Neurosci. 2009;29(9):1779-1794.
  8. Meldrum, B. S. GABAergic mechanisms in the pathogenesis and treatment of epilepsy. Br.J.Clin.Pharmacol. 1989;27 Suppl 1:3S-11S. PubMed
  9. Loeb, C., Marinari, U. M., Benassi, E., Besio, G., Cottalasso, D., Cupello, A., Maffini, M., Mainardi, P., Pronzato, M. A., and Scotto, P. A. Phosphatidylserine increases in vivo the synaptosomal uptake of exogenous GABA in rats. Exp.Neurol. 1988;99(2):4 PubMed
  10. Melis, G. B., Paoletti, A. M., Mais, V., and Fioretti, P. Interference of dopamine infusion on gamma-amino butyric acid (GABA)-stimulated prolactin increase. J.Endocrinol.Invest 1980;3(4):445-448.
  11. Boonstra E, de Kleijn R, Colzato LS, Alkemade A, Forstmann BU, Nieuwenhuis S. Neurotransmitters as food supplements: the effects of GABA on brain and behavior. Front Psychol. 2015 Oct 6;6:1520. doi: 10.3389/fpsyg.2015.01520. eCollection 2015. PubMed
  12. de Bie TH, Witkamp RF, Balvers MG, Jongsma MA. Effects of ?-aminobutyric acid supplementation on glucose control in adults with prediabetes: A double-blind, randomized, placebo-controlled trial. Am J Clin Nutr 2023;118(3):708-719. PubMed

See these in context on the Gamma-aminobutyric Acid (gaba) monograph →

Parts of this content are provided by the Therapeutic Research Center, LLC.

DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.

© 2021 Therapeutic Research Center, LLC

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