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Dietary supplement

Betaine HCl 648 mg Ingredients & Drug Interactions

by NOW

Betaine HCl 648 mg 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 648 mg 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 648 mg is a dietary supplement by NOW with 2 active ingredients. 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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HelloPharmacist Scorecard of Betaine HCl 648 mg by NOW

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 11, 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 2 of its 2 active ingredients.
  • No proprietary blends here — you can verify the dose of every single component.

This formula has 2 active ingredients. Betaine hydrochloride is the main one — a compound that increases stomach acid and is sometimes used to support digestion.

The other is acid-stable protease, an enzyme meant to break down protein in the digestive tract. The capsule also contains inactive ingredients: hypromellose, magnesium stearate, silicon dioxide, and microcrystalline cellulose.

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.

Why this rating?
  • The label markets this product for: support proper digestive conditions in stomach.
  • We looked for evidence on: Dyspepsia, Hypochlorhydria, Protein maldigestion, Indigestion.
  • The closest evidence on file: Betaine Hydrochloride is rated "Insufficient Reliable Evidence To Rate" for Dyspepsia (Natural Medicines).

The evidence for betaine hydrochloride is limited. We hold ratings for six conditions — upset stomach (dyspepsia), low thyroid hormone levels (hypothyroidism), diarrhea, rheumatoid arthritis, food allergies, and hay fever — but for all of them the data is insufficient to make a firm call on whether it works.

No effectiveness ratings are on file for the protease ingredient in this product.

The evidence, ingredient by ingredient Betaine Hydrochloride Proteolytic Enzymes (proteases)

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 2 of the 2 matched ingredients.
  • Pregnancy & breastfeeding safety ratings cover 2 of 2.
  • General safety write-ups exist for 2 of 2.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Betaine hydrochloride can irritate the stomach and should be avoided if you have ulcers, gastritis, or true acid reflux (heartburn from reflux disease). The protease is generally well tolerated but may cause digestive upset or, rarely, allergic reactions.

Neither ingredient should be used in pregnancy without a doctor's say-so — safety data is too thin. During breastfeeding, betaine HCl should be avoided, and the protease is not recommended without medical guidance.

Side effects, ingredient by ingredient Betaine Hydrochloride Proteolytic Enzymes (proteases)

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 2 matched ingredients 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.

Check with us before taking this product if you use H2-blockers (like famotidine or ranitidine), antacids, or proton pump inhibitors (like omeprazole) — betaine hydrochloride may reduce how well they work.

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.

This product is for people exploring digestive support through acid and enzymes, but it's not right for anyone managing stomach acid with medications or living with ulcers or reflux. If you take H2-blockers, antacids, or PPIs, talk to a pharmacist before you start — the timing and dose of your current medications may need to shift.

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

Assessment coverage: 2 of 2 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Dec 21, 2024.

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 648 mg, straight from the product label.

Brand NOW
Barcode (UPC) 733739029386
Net contents 120 Veg Capsule(s)
Market status On market
Date entered into DSLD Dec 21, 2024
DSLD ID 313588
Product type Non-nutrient/non-botanical
Supplement form Capsule
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Vegan, Vegetarian, Adult (18 - 50 Years), Kosher, Halal, Gluten 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 Betaine HCl 648 mg by NOW, 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 Veg Capsule(s)
Maximum serving Sizes:
2 Veg Capsule(s)
Servings per container
60
UPC/BARCODE
733739029386
IngredientAmount% DV
Betaine Hydrochloride1296 mg--
acid-stable Protease300 mg--

Other ingredients: Hypromellose, Magnesium Stearate, Silicon Dioxide, Microcrystalline Cellulose

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.
Suggested/Recommended/Usage/Directions

Suggested Usage: Take 1-2 capsules at the beginning of each meal. Do not take on an empty stomach.

Precautions

Do not take on an empty stomach.

Caution: For adults only.

Consult physician if pregnant/nursing, taking medication, or have a medical condition (especially acid reflux or upper GI ulcers).

Keep out of reach of children.

Not manufactured with yeast, soy, milk, egg, fish, shellfish, tree nut or sesame ingredients. Produced in a GMP facility that processes other ingredients containing these allergens.

Formula

NOW Betaine HCl is formulated to support proper digestive conditions in the stomach. Hydrochloric Acid (HCl) is normally produced in the stomach, where it assists protein digestion by activating pepsin, helps to maintain a healthy balance of gut flora, and stimulates the release of intestinal enzymes. Pepsin is a protease produced in the stomach that partially breaks down proteins in foods. HCl production tends to decline with age, so supplementing with HCl and pepsin may help to maintain normal digestive function. This product uses a vegetarian acid-stable protease with activity equivalent to that of animal-derived pepsin.

Triangle K (Kosher)

Crescent H Halal

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.

General Statements

This bottle is made from 100% PCR (post-consumer recycled) resin.

Digestive Family owned since 1968.

Formulation

Digestive support

Non-GMO

Vegetarian formula Vegetarian/Vegan

Made and quality tested in the USA with globally sourced ingredients.

Not manufactured with yeast, soy, milk, egg, fish, shellfish, tree nut or sesame ingredients.

Natural color variation may occur in this product.

FDA Statement of Identity

A Dietary Supplement

Seals/Symbols

Triangle K (Kosher)

GMP Quality Assured Crescent H Halal

Storage

Store in a cool, dry place after opening.

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

See for yourself

Betaine HCl 648 mg by NOW label

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

Betaine HCl 648 mg 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 648 mg by NOW

These are the 2 active ingredients this product is made of. Select any to open its full monograph.

Serving size1 Veg Capsule(s) Dosage formCapsule Servings per container60 Amounts shown are per serving.

Most supplement products combine several ingredients, and a medication can interact with the product through any one of them. Each ingredient below shows whether it has known drug interactions.

Betaine Hydrochloride

Interacts with
36 drugs
1296 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

Acid-stable Protease

No known
interactions
300 mg per serving Form: Pepsin, Fungal

Proteolytic enzymes are proteins that help break down other proteins, and common examples include bromelain (from pineapple), papain (from papaya), tr...

Acid-stable Protease monograph & interactions

Other (inactive) ingredients: Hypromellose, Magnesium Stearate, Silicon Dioxide, Microcrystalline Cellulose. These complete the product’s ingredient list but are not active constituents.

Interaction report

Betaine HCl 648 mg by NOW Drug Interactions

Want to check YOUR meds against Betaine HCl 648 mg?

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 648 mg interact with 36 drugs. Click any drug to see the details.

1 of the 2 ingredients in Betaine HCl 648 mg 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 648 mg 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 648 mg, from the product label.

NOW

See all NOW products
Name
NOW Foods
Street Address
395 S. Glen Ellyn Rd.
City
Bloomingdale
State
IL
ZipCode
60108
Web Address
nowfoods.com
Pharmacist Counseling Corner

Betaine HCl 648 mg by NOW: Common Questions

Does Betaine HCl 648 mg by NOW interact with any medications?
Yes. Based on its ingredients, Betaine HCl 648 mg 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 648 mg contains 2 active ingredients, and an interaction can come from any of them. We check every ingredient, combine the results into one list per medication, and show which ingredient and mechanism is 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?
No — betaine hydrochloride raises stomach acid and is not safe for people with true acid reflux (reflux disease). If you have reflux symptoms, talk to your pharmacist before considering this product.
Is this safe during pregnancy?
Safety data in pregnancy is too limited, so it's best avoided unless your doctor prescribes it. Talk to your pharmacist or doctor before use.
What is the protease ingredient for?
It's an enzyme intended to break down protein during digestion. We don't have effectiveness ratings for it, so we can't confirm how well it works.
Does this product have fillers?
Yes — it contains inactive ingredients like hypromellose, magnesium stearate, silicon dioxide, and microcrystalline cellulose, which help form and fill the capsule.
What are the side effects?
The most likely ones are digestive upset, heartburn, or stomach irritation. Rarely, the protease may trigger an allergic reaction. Stop and contact your pharmacist if you have severe stomach pain or signs of allergy.

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.

Betaine HCl 648 mg label
Go deeper

The Full Monographs Behind Betaine HCl 648 mg’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 → Herb & supplement monograph

Proteolytic Enzymes (proteases)

Proteolytic enzymes are proteins that help break down other proteins, and common examples include bromelain (from pineapple), papain (from papaya), trypsin, chymotrypsin, and pancreatin. Peo...

Read the full Proteolytic Enzymes (proteases) monograph →
Sources

Sources & How We Checked

Betaine HCl 648 mg'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 5 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 →

Proteolytic Enzymes (proteases) 3 references
  1. Weeks JA, Harper RA, Simon RA, Burdick JD. Assessment of sensitization risk of a laundry pre-spotter containing protease. Cutan Ocul Toxicol. 2011;30(4):272-9. PubMed
  2. Marquès LI, Lara S, Abós T, Bartolomé B. Occupational rhinitis due to pepsin. J Investig Allergol Clin Immunol. 2006;16(2):136-7. DOI
  3. Cartier A, Malo JL, Pineau L, Dolovich J. Occupational asthma due to pepsin. J Allergy Clin Immunol. 1984;73(5 Pt 1):574-7. PubMed

See these in context on the Proteolytic Enzymes (proteases) 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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