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Dietary supplement

Allithiamine 50 mg Ingredients & Drug Interactions

by Cardiovascular Research

Allithiamine 50 mg label
See full label image
Capsule Category: Vitamin
Most serious interaction: Minor
Clinical methodology reviewed by · Updated Sep 9, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Allithiamine 50 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

Allithiamine 50 mg is a dietary supplement by Cardiovascular Research with 1 active ingredient. Its ingredients are commonly taken for preventing or treating thiamine deficiency, beriberi, wernicke-korsakoff syndrome (alcohol-related).Based on those ingredients, 3 medications have a known interaction with it, the most serious rated minor. The ingredients most likely to interact are Thiamine. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against Allithiamine 50 mg by Cardiovascular Research

Ask about any prescription or over-the-counter medication and we check it for interactions with Allithiamine 50 mg by Cardiovascular Research — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Allithiamine 50 mg by Cardiovascular Research

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 one active ingredient: thiamine (also called vitamin B1), a form of thiamine that your body uses for energy production and nerve function. The capsule also holds microcrystalline cellulose, gelatin, magnesium stearate, and silicon dioxide as inactive ingredients to hold it together.

Does it work?

Strong evidence
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
Strong

Clinical evidence supports at least one of this product's ingredients for its stated purpose.

Why this rating?
  • The label markets this product for: Vitamin B1 nutrient supplementation.
  • We looked for evidence on: Thiamine deficiency, Wernicke-Korsakoff syndrome (WKS), Beriberi, Nerve function support.
  • The strongest evidence on file: Thiamine is rated "Effective" for Thiamine deficiency (Natural Medicines).
  • Also on file: Thiamine is rated "Effective" for Wernicke-Korsakoff syndrome (WKS).

Thiamine is effective for treating thiamine deficiency and Wernicke-Korsakoff syndrome (a serious brain condition caused by severe thiamine lack). It's possibly effective for dysmenorrhea (period pain).

The evidence doesn't support its use as a mosquito repellent or for heart failure.

The evidence, ingredient by ingredient Thiamine

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.

Thiamine is generally very safe when taken by mouth in normal amounts. Rarely, it may cause skin irritation or allergic reactions when taken orally; injected thiamine can rarely trigger anaphylactoid reactions (a severe allergic response), though this is uncommon.

Thiamine is needed in pregnancy and while breastfeeding — use supplement doses only as your doctor or pharmacist recommends.

Side effects, ingredient by ingredient Thiamine

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 — Thiamine.
  • The most serious interaction on file is rated Minor.
  • For scale: 3 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 trimethoprim (an antibiotic), let your healthcare provider or pharmacist know before starting this product — it may raise thiamine blood levels slightly. No other major interactions are documented for the ingredients we checked.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with clinical evidence supporting its stated purpose. Only minor medication interactions are documented, and safety information is well characterized.

This supplement is a good choice if you have a thiamine deficiency or Wernicke-Korsakoff syndrome. If you take trimethoprim or any other medications, check your full list with your doctor or pharmacist before starting.

Thiamine is generally well tolerated, but it's worth confirming it fits your personal health picture.

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 22, 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 Allithiamine 50 mg, straight from the product label.

Brand Cardiovascular Research
Barcode (UPC) 696859131097
Net contents 250 Capsule(s)
Market status On market
Date entered into DSLD Nov 22, 2023
DSLD ID 299765
Product type Vitamin
Supplement form Capsule
Dietary claims / uses Nutrient, All Other
Intended target group(s) Adult (18 - 50 Years), No Allergies, 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 Allithiamine 50 mg by Cardiovascular Research, 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
250
UPC/BARCODE
696859131097
IngredientAmount% DV
Thiamine50 mg--

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

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.
FDA Statement of Identity

A Dietary Supplement

Formula

Allithiamine contains a special form of vitamin B1 and other nutritional co-factors that are naturally occurring in garlic.

(Vitamin B1)

Formulation

This formula is free of corn, soy, yeast, wheat, phenol or other common food or chemical allergens.

Gluten free, casein free

Suggested/Recommended/Usage/Directions

Directions Take one capsule per day, or as directed by a physician.

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

See for yourself

Allithiamine 50 mg by Cardiovascular Research label

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

Allithiamine 50 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 Allithiamine 50 mg by Cardiovascular Research

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 container250 Amounts shown are per serving.

Thiamine

Interacts with
3 drugs
50 mg per serving Form: Thiamine Tetrahydrofurfuryl Disulfide

Thiamine (vitamin B1) is an essential nutrient your body needs to turn food into energy and to keep your nerves and heart healthy. Most people get eno...

Thiamine monograph & interactions

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

Interaction report

Allithiamine 50 mg by Cardiovascular Research Drug Interactions

Want to check YOUR meds against Allithiamine 50 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.

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3Drugs
3 Minor

Ingredients driving the most interactions

Thiamine 3

Individual Drug Interactions

The ingredients in Allithiamine 50 mg interact with 3 drugs. Click any drug to see the details.

1 of the 1 ingredient in Allithiamine 50 mg interact with drugs. Each result below shows which ingredient is responsible. Thiamine

Each ingredient & the kinds of drugs it affects

For each ingredient in Allithiamine 50 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.

Thiamine1 drug type · 3 drugs

Trimethoprim (Proloprim)

Trimethoprim might increase blood levels of thiamine.
In vitro, animal, and clinical research suggest that trimethoprim inhibits intestinal thiamine transporter ThTR-2, hepatic transporter OCT1, and renal transporters OCT2, MATE1, and MATE2, resulting in paradoxically increased thiamine plasma concentrations.

Likelihood Probable Evidence B
Thiamine full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Allithiamine 50 mg, from the product label.

Cardiovascular Research

See all Cardiovascular Research products
Name
ECOLOGICAL FORMULAS
Street Address
1061-B SHARY CIRCLE
City
CONCORD
State
CA
ZipCode
94518
Pharmacist Counseling Corner

Allithiamine 50 mg by Cardiovascular Research: Common Questions

Does Allithiamine 50 mg by Cardiovascular Research interact with any medications?
Yes. Based on its ingredients, Allithiamine 50 mg has a known interaction with 3 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Allithiamine 50 mg 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.
Is thiamine safe during pregnancy and breastfeeding?
Yes — thiamine is actually needed during both pregnancy and breastfeeding. Use supplement doses only as your doctor or pharmacist advises for your situation.
What is thiamine used for?
Thiamine (vitamin B1) is effective for treating thiamine deficiency and a serious brain condition called Wernicke-Korsakoff syndrome. It may also help with period pain. It's not proven for mosquito repellent or heart failure.
Can thiamine cause side effects?
Taken by mouth, thiamine is very safe and rarely causes problems. A small number of people experience skin irritation or allergic reactions. Injected thiamine can rarely trigger a severe allergic response, but that's uncommon.
Should I check this with my doctor if I'm on antibiotics?
If you take trimethoprim (an antibiotic), mention this supplement to your doctor or pharmacist — it may slightly raise your thiamine levels. Even so, this is a minor concern worth a quick conversation.

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

Not sure if Allithiamine 50 mg 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.

Allithiamine 50 mg label
Go deeper

The Full Monographs Behind Allithiamine 50 mg’s Ingredients

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

Herb & supplement monograph

Thiamine

Interacts with 3 drugs

Thiamine (vitamin B1) is an essential nutrient your body needs to turn food into energy and to keep your nerves and heart healthy. Most people get enough from food, but supplements are clear...

Read the full Thiamine monograph →
Sources

Sources & How We Checked

Allithiamine 50 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 7 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.

Thiamine 7 references
  1. McEvoy GK, ed. AHFS Drug Information. Bethesda, MD: American Society of Health-System Pharmacists, 1998.
  2. Yates AA, Schlicker SA, Suitor CW. Dietary reference intakes: The new basis for recommendations for calcium and related nutrients, B vitamins, and choline. J Am Diet Assoc 1998;98:699-706. PubMed
  3. Food and Nutrition Board, Institute of Medicine. Dietary Reference Intakes for Thiamin, Riboflavin, Niacin, Vitamin B6, Folate, Vitamin B12, Pantothenic Acid, Biotin, and Choline (2000). Washington, DC: National Academy Press, 2000. Available at: http://b
  4. Rogovik, A. L., Vohra, S., and Goldman, R. D. Safety considerations and potential interactions of vitamins: should vitamins be considered drugs? Ann.Pharmacother. 2010;44(2):311-324. PubMed
  5. Arruti N, Bernedo N, Audicana MT, Villarreal O, Uriel O, Muñoz D. Systemic allergic dermatitis caused by thiamine after iontophoresis. Contact Dermatitis. 2013 Dec;69(6):375-6. PubMed
  6. Thiamine hydrochloride injection package insert. Lake Zurich, IL: Fresenius Kabi, LLC; September 2019.
  7. Vora B, Wen A, Yee SW, et al. The Effect of Trimethoprim on Thiamine Absorption: A Transporter-Mediated Drug-Nutrient Interaction. Clin Pharmacol Ther 2023;114(2):381-392.

See these in context on the Thiamine 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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