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Dietary supplement

Thiamin Vitamin B1 100 Milligrams Ingredients & Drug Interactions

by NutraBio

Thiamin Vitamin B1 100 Milligrams label
See full label image
Capsule Category: Vitamin
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 Thiamin Vitamin B1 100 Milligrams 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

Thiamin Vitamin B1 100 Milligrams is a dietary supplement by NutraBio with 3 active ingredients. 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 Thiamin Vitamin B1 100 Milligrams by NutraBio

Ask about any prescription or over-the-counter medication and we check it for interactions with Thiamin Vitamin B1 100 Milligrams by NutraBio — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Thiamin Vitamin B1 100 Milligrams by NutraBio

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 3 of its 3 active ingredients.
  • No proprietary blends here — you can verify the dose of every single component.

This product contains 3 ingredients total. The active component is thiamine (also called vitamin B1), which your body uses for energy production and nerve function.

The other ingredients are cherry flavor and yeast — the flavor is an additive, and yeast serves as an inactive ingredient. The capsule itself is made of vegetable material.

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: Thiamine supplementation and deficiency support.
  • We looked for evidence on: Thiamine deficiency, Wernicke-Korsakoff syndrome (WKS), Beriberi, Energy metabolism.
  • 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 (WKS), a serious neurological condition. It's possibly effective for menstrual cramps (dysmenorrhea).

For mosquito repellent and heart failure, the evidence doesn't support its use. Cherry flavor has insufficient evidence to rate its effects on cardiovascular disease, diabetes, obesity, or osteoarthritis.

The evidence, ingredient by ingredient Thiamine Sweet Cherry

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.

Thiamine is generally very safe when taken by mouth in normal amounts. Orally, it might rarely trigger dermatitis or other allergic reactions; injected forms (which this product is not) can rarely cause serious reactions.

Sweet cherry is widely eaten as food and generally well tolerated, though it can cause allergic reactions in sensitive people — anything from mouth irritation to hives, swelling, or breathing problems. Thiamine is needed during pregnancy and breastfeeding; use only at the doses your doctor or pharmacist recommends.

The safety of concentrated cherry supplements during pregnancy and breastfeeding hasn't been well studied, so discuss with your provider before use if you're pregnant or nursing.

Side effects, ingredient by ingredient Thiamine Sweet Cherry

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 — 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.

Check with your pharmacist if you take trimethoprim (an antibiotic for urinary tract and other infections). No other major medication interactions are documented for the ingredients we could check; we don't have interaction data on yeast.

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 product works well if you have a thiamine deficiency or Wernicke-Korsakoff syndrome. If you take trimethoprim (an antibiotic), let your pharmacist know before starting — the combination is minor but worth monitoring.

Pregnant or breastfeeding? Talk to your provider or pharmacist about the right dose for you.

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

Assessment coverage: 2 of 3 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Nov 21, 2016.

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 Thiamin Vitamin B1 100 Milligrams, straight from the product label.

Brand NutraBio
Barcode (UPC) 649908521363
Net contents 120 V-Cap(s)
Market status On market
Date entered into DSLD Nov 21, 2016
DSLD ID 66721
Product type Vitamin
Supplement form Capsule
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Vegetarian, Adult (18 - 50 Years), Kosher, 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 Thiamin Vitamin B1 100 Milligrams by NutraBio, 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 Vegetable Capsule(s)
Maximum serving Sizes:
1 Vegetable Capsule(s)
Servings per container
120
UPC/BARCODE
649908521363
IngredientAmount% DV
Thiamine100 mg, 100 mg, 100 mg6667%
Cherry flavor45 NP, 45 NP, 45 NP30%
Yeast20 NP, 20 NP, 20 NP10%

Other ingredients: Vegetable Capsule

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

1 capsule daily with food Suggested Use: As a dietary supplement, take 1 capsule daily, preferably with meal,or as directed by your physician.

Formulation

VEGETARIAN

ALLERGEN FREE NON-GMO GLUTEN FREE BSE/TSE FREE

No fillers No excipients No additives

Free of Harmful Impurities.

Formula

ALLERGEN FREE

OU

Precautions

Warning: NOT INTENDED FOR USE BY PERSONS UNDER THE AGE OF 18. KEEP OUT OF THE REACH OF CHILDREN.

If you are pregnant, breast feeding, have known medical conditions (including kidney or liver disease) or are taking prescription or OTC medication(s) consult with your health care practitioner before using this product.

Storage

STORE IN A COOL DRY PLACE.

General Statements

Manufactured in our GMP & FDA inspected facility

100% pure

Made in our GMP & FDA inspected facility

Pharmaceutical Grade HPLC Lab Tested for Potency

120 servings

Vegetable Capsule

Seals/Symbols

True label Full label disclosure

OU

Made in USA

FDA Statement of Identity

Dietary Supplement

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

52136-001 B20413-000

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

See for yourself

Thiamin Vitamin B1 100 Milligrams by NutraBio label

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

Thiamin Vitamin B1 100 Milligrams 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 Thiamin Vitamin B1 100 Milligrams by NutraBio

These are the 3 active ingredients this product is made of. Select any to open its full monograph.

Serving size1 Vegetable Capsule(s) Dosage formCapsule Servings per container120 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.

Thiamine

Interacts with
3 drugs
100 mg per serving Form: Vitamin B1

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

Cherry flavor

No known
interactions
45 NP per serving

Sweet cherry (Prunus avium) is a popular fruit rich in antioxidants and natural plant pigments, and it is sometimes used as a supplement for gout, sor...

Cherry flavor monograph & interactions

Yeast

20 NP per serving

Other (inactive) ingredients: Vegetable Capsule. These complete the product’s ingredient list but are not active constituents.

Interaction report

Thiamin Vitamin B1 100 Milligrams by NutraBio Drug Interactions

Want to check YOUR meds against Thiamin Vitamin B1 100 Milligrams?

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
3Drugs
3 Minor

Ingredients driving the most interactions

Thiamine 3

Individual Drug Interactions

The ingredients in Thiamin Vitamin B1 100 Milligrams interact with 3 drugs. Click any drug to see the details.

1 of the 3 ingredients in Thiamin Vitamin B1 100 Milligrams interact with drugs. Each result below shows which ingredient is responsible. Thiamine

Each ingredient & the kinds of drugs it affects

For each ingredient in Thiamin Vitamin B1 100 Milligrams 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 Thiamin Vitamin B1 100 Milligrams, from the product label.

NutraBio

See all NutraBio products
Name
NutraBio Labs, Inc.
Street Address
564 Lincoln Blvd.
City
Middlesex
State
NJ
ZipCode
08846
Phone Number
732-748-8606
Web Address
www.nutrabio.com
Pharmacist Counseling Corner

Thiamin Vitamin B1 100 Milligrams by NutraBio: Common Questions

Does Thiamin Vitamin B1 100 Milligrams by NutraBio interact with any medications?
Yes. Based on its ingredients, Thiamin Vitamin B1 100 Milligrams 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?
Thiamin Vitamin B1 100 Milligrams contains 3 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.
Does thiamine really work for vitamin B1 deficiency?
Yes — thiamine is effective for treating thiamine deficiency and Wernicke-Korsakoff syndrome, a serious neurological condition caused by severe deficiency. If your doctor suspects a deficiency, this supplement can help.
Is it safe to take if I'm pregnant or breastfeeding?
Thiamine itself is needed in pregnancy and while breastfeeding — it's rated likely safe. Just use only the dose your doctor or pharmacist advises, not more. Concentrated cherry supplements haven't been well studied in pregnancy and breastfeeding, so mention this product to your provider first.
Can this help with period cramps?
Thiamine is possibly effective for menstrual cramps (dysmenorrhea), so it may help some people. Evidence isn't definitive, though — talk to your provider about whether it's worth trying for your situation.
What's the cherry flavor in there for?
It's just flavoring to make the capsule taste better if you open it. There's no reliable evidence that cherry itself prevents disease or helps with health conditions.
Could I have an allergic reaction?
Rarely. Thiamine orally can cause dermatitis or other allergic reactions in sensitive people. Cherry can also trigger allergies — anything from mouth irritation to hives, swelling, or breathing trouble. If you notice a rash or trouble breathing after taking it, stop and tell your pharmacist right away.

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

Not sure if Thiamin Vitamin B1 100 Milligrams is safe with your meds?

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Ask a pharmacist

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.

Thiamin Vitamin B1 100 Milligrams label
Go deeper

The Full Monographs Behind Thiamin Vitamin B1 100 Milligrams’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 → Herb & supplement monograph

Sweet Cherry

Sweet cherry (Prunus avium) is a popular fruit rich in antioxidants and natural plant pigments, and it is sometimes used as a supplement for gout, sore muscles, and sleep. The research that...

Read the full Sweet Cherry monograph →
Sources

Sources & How We Checked

Thiamin Vitamin B1 100 Milligrams'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 10 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 →

Sweet Cherry 3 references
  1. Serrano M, Guillen F, Martinez-Romero D, et al. Chemical constiuents and antioxidant activity of sweet cherry at different ripening stages. J Agric Food Chem 2005;53:2741-5.
  2. Ballmer-Weber BK, Scheurer S, Fritsche P, et al. Component-resolved diagnosis with recombinant allergens in patients with cherry allergy. J Allergy Clin Immunol 2002;110:167-73. PubMed
  3. Goncalves B, Landbo AK, Knudsen D, et al. Effect of ripeness and postharvest storage on the phenolic profiles of Cherries (Prunus avium L.). J Agric Food Chem 2004;52:523-30.

See these in context on the Sweet Cherry 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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