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Dietary supplement

Betaine HCl Ingredients & Drug Interactions

by Onnit

Betaine HCl label
See full label image
Capsule Category: Non-nutrient/non-botanical
Most serious interaction: Minor
Clinical methodology reviewed by · Updated Sep 16, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Betaine HCl 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: Minor

Betaine HCl is a dietary supplement by Onnit with 1 active ingredient. Its ingredients are commonly taken for low stomach acid (hypochlorhydria), bloating and gas, indigestion.Based on those ingredients, 36 medications have a known interaction with it, the most serious rated minor. The ingredients most likely to interact are Betaine Hydrochloride. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against Betaine HCl by Onnit

Ask about any prescription or over-the-counter medication and we check it for interactions with Betaine HCl by Onnit — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Betaine HCl by Onnit

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 16, 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.

This product contains a single active ingredient: betaine hydrochloride, a compound that increases the amount of acid in your stomach. The capsule also contains inactive ingredients — hydroxypropyl methylcellulose, water, and Nu-Flow — which are fillers and binders used to form and preserve the capsule.

Does it work?

Not established
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 established

The graded evidence we hold for these ingredients covers different conditions than the ones this product is marketed for, so there's no established rating for its stated use — see Betaine Hydrochloride's own graded uses on its monograph.

Why this rating?
  • The label markets this product for: support healthy gut flora and optimal digestion.
  • We looked for evidence on: Dyspepsia, Diarrhea, indigestion, bloating, gastric insufficiency.
  • The closest evidence on file: Betaine Hydrochloride is rated "Insufficient Reliable Evidence To Rate" for Diarrhea (Natural Medicines).
  • Also on file: Betaine Hydrochloride is rated "Insufficient Reliable Evidence To Rate" for Dyspepsia.

The evidence we hold shows insufficient data to rate betaine hydrochloride for any of its commonly claimed uses — dyspepsia (indigestion), low thyroid function, diarrhea, rheumatoid arthritis, food allergies, or hay fever. That doesn't mean it doesn't work; it means rigorous human trials backing up these claims aren't yet in our data.

If you're considering it for a specific reason, talk it over with your doctor or pharmacist.

The evidence, ingredient by ingredient Betaine Hydrochloride

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.

Betaine hydrochloride may irritate your stomach and isn't safe if you have ulcers, gastritis, or true acid reflux — the ingredient can trigger or worsen heartburn and potentially harm healing ulcers. The safety data advises against use during pregnancy and breastfeeding, so if you're pregnant, planning to become pregnant, or nursing, avoid this product and discuss it with your doctor or pharmacist.

Side effects, ingredient by ingredient Betaine Hydrochloride

Meds to double-check

Minor interactions only
Known Interaction Concern · database check
Minor only

Only Minor-severity interactions are documented for these ingredients.

Why this rating?
  • 1 of the 1 matched ingredient can interact with medications — Betaine Hydrochloride.
  • The most serious interaction on file is rated Minor.
  • For scale: 36 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.

If you take any medication that reduces stomach acid — H2-blockers, antacids, or proton pump inhibitors (PPIs) — check with your doctor or pharmacist before starting this product. Betaine hydrochloride increases stomach acidity, which could weaken those medications' effects.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with no established evidence rating for its marketed use. Only minor medication interactions are documented, and safety information is well characterized.

Betaine HCl is a single-ingredient product whose effects aren't well established in current research. It's worth considering only if you and your doctor think it fits your needs and you don't take acid-reflux medications.

If you have a sensitive stomach, ulcers, or reflux, this product isn't for you. Talk it over with your doctor or pharmacist before you start.

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 Aug 23, 2023.

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 Betaine HCl, straight from the product label.

Brand Onnit
Net contents 15 Packet(s); 15 Capsule(s)
Market status On market
Date entered into DSLD Aug 23, 2023
DSLD ID 295154
Product type Non-nutrient/non-botanical
Supplement form Capsule
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years)
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 Betaine HCl by Onnit, 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 Capsule(s)
Maximum serving Sizes:
1 Capsule(s)
Servings per container
15
IngredientAmount% DV
Betaine Hydrochloride500 mg--

Other ingredients: Hydroxypropyl Methylcellulose, Water, Nu-Flow

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.
Formula

HCL

In order to support the gut biome, we included five acid-resistant strains of probiotics, along with S. boulardii and prebiotic food to feed our little buddies.

Betaine HCL Hydrochloric acid is the stomach's innate way to assist with the breakdown of food. In combination with enzymes, our betaine HCL forms a potent 1-2 punch to support normal stomach acid function and to support digestion and nutrient absorption.

Formulation

Supplement packets Formulated to help support healthy gut flora & optimal digestion

Unique formula designed to Break down food & absorb nutrients Support the immune system Help support healthy gut flora Digest major macronutrients Healthy gut biome A gut biome of friendly probiotic bacteria is not only important for digestion, it is also where a great deal of our important nutrients are produced. In addition, these all-important little allies are also responsible for maintaining a healthy immune system.

FDA Statement of Identity

Dietary Supplement

Suggested/Recommended/Usage/Directions

Suggested use Adults, as a dietary supplement, take one packet with your largest meal of the day.

Precautions

Consult a medical doctor before taking this or any other nutritional supplement if you are pregnant, nursing, have or suspect a medical condition or are taking any medications.

Keep out of reach of children.

Storage

Store in a cool, dry place.

FDA Disclaimer Statement

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

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

See for yourself

Betaine HCl by Onnit label

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

Betaine HCl 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 Betaine HCl by Onnit

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

Serving size1 Capsule(s) Dosage formCapsule Servings per container15 Amounts shown are per serving.

Betaine Hydrochloride

Interacts with
36 drugs
500 mg per serving

Betaine hydrochloride is a supplement used to temporarily increase stomach acid in people who may have low acid levels. Evidence for its benefits is l...

Betaine Hydrochloride monograph & interactions

Other (inactive) ingredients: Hydroxypropyl Methylcellulose, Water, Nu-Flow. These complete the product’s ingredient list but are not active constituents.

Interaction report

Betaine HCl by Onnit Drug Interactions

Want to check YOUR meds against Betaine HCl?

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
36Drugs
36 Minor

Ingredients driving the most interactions

Betaine Hydrochloride 36

Individual Drug Interactions

The ingredients in Betaine HCl interact with 36 drugs. Click any drug to see the details.

1 of the 1 ingredient in Betaine HCl interact with drugs. Each result below shows which ingredient is responsible. Betaine Hydrochloride

Each ingredient & the kinds of drugs it affects

For each ingredient in Betaine HCl 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.

Betaine Hydrochloride3 drug types · 36 drugs

Antacids

Betaine hydrochloride increases stomach acidity and could decrease the effects of antacids.
In human research, betaine hydrochloride increases stomach acidity. Antacids are taken to decrease stomach acidity. Theoretically, taking betaine hydrochloride along with antacids might decrease the effects of the antacids.

Likelihood Possible Evidence D
H2-Blockers

Betaine hydrochloride increases stomach acidity and could decrease the effects of H2-blockers.
In human research, betaine hydrochloride increases stomach acidity. H2-blockers are used to decrease stomach acidity. Theoretically, taking betaine hydrochloride along with H2-blockers might decrease the effects of H2-blockers.

Likelihood Possible Evidence D
Proton Pump Inhibitors (Ppis)

Betaine hydrochloride increases stomach acidity and could decrease the effects of PPIs.
In human research, betaine hydrochloride increases stomach acidity. PPIs are used to decrease stomach acidity. Theoretically, taking betaine hydrochloride along with PPIs might decrease the effects of PPIs

Likelihood Possible Evidence D
Betaine Hydrochloride full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Betaine HCl, from the product label.

Onnit

See all Onnit products
Name
Onnit Labs, LLC
City
Austin
State
Texas
ZipCode
78744
Phone Number
(855) 666-4899
Pharmacist Counseling Corner

Betaine HCl by Onnit: Common Questions

Does Betaine HCl by Onnit interact with any medications?
Yes. Based on its ingredients, Betaine HCl has a known interaction with 36 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Betaine HCl 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.
Can I take this if I have acid reflux or GERD?
No — this product increases stomach acid, which can trigger or worsen reflux symptoms and isn't safe for true acid reflux. If you have reflux, talk with your doctor or pharmacist.
Is it safe during pregnancy or while breastfeeding?
No. The safety data advises against use in pregnancy, and safety during breastfeeding hasn't been established. If you're pregnant, planning pregnancy, or nursing, avoid this product and discuss it with your doctor.
Can I take this with antacids or heartburn medications?
Not without checking first — betaine hydrochloride may reduce how well acid-reflux drugs work, including H2-blockers, antacids, and PPIs. Talk to your doctor or pharmacist before combining them.
What does betaine hydrochloride actually do?
It increases the amount of acid in your stomach. Beyond that, the evidence we hold doesn't establish reliable benefits for indigestion, thyroid function, diarrhea, or the other conditions it's marketed for.
Could this irritate my stomach?
Yes — betaine hydrochloride can irritate your stomach and may cause heartburn. It's especially risky if you have ulcers or gastritis, which it could potentially worsen.

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

Not sure if Betaine HCl is safe with your meds?

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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.

Betaine HCl label
Go deeper

The Full Monographs Behind Betaine HCl’s Ingredients

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

Herb & supplement monograph

Betaine Hydrochloride

Interacts with 36 drugs

Betaine hydrochloride is a supplement used to temporarily increase stomach acid in people who may have low acid levels. Evidence for its benefits is limited and mostly based on tradition rat...

Read the full Betaine Hydrochloride monograph →
Sources

Sources & How We Checked

Betaine HCl'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 2 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.

Betaine Hydrochloride 2 references
  1. Yago MR, Frymoyer A, Benet LZ, Smelick GS, Frassetto LA, Ding X, Dean B, Salphati L, Budha N, Jin JY, Dresser MJ, Ware JA. The use of betaine HCl to enhance dasatinib absorption in healthy volunteers with rabeprazole-induced hypochlorhydria. AAPS J. 2014 PubMed
  2. Yago MR, Frymoyer AR, Smelick GS, Frassetto LA, Budha NR, Dresser MJ, Ware JA, Benet LZ. Gastric reacidification with betaine HCl in healthy volunteers with rabeprazole-induced hypochlorhydria. Mol Pharm. 2013 Nov 4;10(11):4032-7. PubMed

See these in context on the Betaine Hydrochloride 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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