Biotin 8000 mcg Ingredients & Drug Interactions
by Thorne
What is this page for?
First and foremost: checking Biotin 8000 mcg 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
Biotin 8000 mcg is a dietary supplement by Thorne with 1 active ingredient. Its ingredients are commonly taken for hair growth and thinning hair, brittle nails, skin health.We don’t currently list a known drug interaction for its mapped ingredients — but that doesn’t guarantee none exist, so always confirm with your pharmacist.
HelloPharmacist Scorecard of Biotin 8000 mcg by Thorne
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.
What’s inside
Full disclosure
This product contains one active ingredient: biotin, a B vitamin your body uses to help break down fats, carbohydrates, and amino acids. At 8000 micrograms per capsule, this is a high-dose supplement — well above what you'd get from food alone.
The capsule itself is filled with inactive ingredients like microcrystalline cellulose (a plant-based binder) and hypromellose (a coating material).
Does it work?
Strong evidence
Biotin is likely effective for biotin deficiency, the one condition where we have solid evidence it works. For other uses — multiple sclerosis, seborrheic dermatitis (a scaly skin condition), and alopecia areata (patchy hair loss) — the evidence is either weak or absent.
The data we hold shows biotin as possibly ineffective for multiple sclerosis and seborrheic dermatitis, and there's insufficient reliable evidence for alopecia areata.
How safe is it?
Well-documented data
Biotin is generally well tolerated, even at fairly high doses, because your body removes excess amounts through urine. High-dose oral biotin has rarely been linked to mild diarrhea — two patients taking much higher doses (300 mg daily) reported transient mild diarrhea.
One isolated case report described an older woman who developed inflammation around her heart and lungs after taking biotin 10 mg plus pantothenic acid 300 mg daily for two months, but whether biotin was responsible remains unclear, and no similar cases have been reported since. The safety data shows biotin is likely safe in pregnancy and lactation; however, the notes advise checking with your doctor before taking high-dose supplements rather than relying on food and prenatal vitamins alone.
Meds to double-check
No known interactions
No interactions are documented in our data for the medications we checked. Still, mention this supplement to your pharmacist when you pick up any new prescriptions, just to be thorough.
The bottom line
Scorecard at a glanceFully disclosed formula with clinical evidence supporting its stated purpose. No medication interactions are currently documented, and safety information is well characterized.
If you have biotin deficiency, this supplement is likely to help. For other uses — hair loss, skin conditions, or MS — the evidence doesn't support it.
Talk with your pharmacist or doctor before starting a high-dose biotin product, especially if you're pregnant, breastfeeding, or have any health concerns.
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 Jun 25, 2025.
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
General information
Key facts about Biotin 8000 mcg, straight from the product 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 Biotin 8000 mcg by Thorne, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Biotin | 8 mg | 26667% |
Other ingredients: Microcrystalline Cellulose, Hypromellose, Calcium Laurate, Silicon Dioxide
Tap any ingredient to jump to its full detail below.
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
Foundational Skin/Hair
Gluten free
Suggested/Recommended/Usage/Directions
Suggested use: Take 1 capsule one to two times daily or as recommended by your health-care practitioner.
Precautions
Tamper evident: Use only if bottle is sealed.
If pregnant, consult your health-care practitioner before using this product.
Warning: Biotin supplementation can interfere with certain lab tests. Consult your health-care practitioner prior to having your blood drawn.
Storage
Store tightly sealed in a cool, dry place.
Seals/Symbols
Manufactured in the USA using US & imported ingredients NSF Contents Certified
FDA Statement of Identity
Dietary Supplement
FDA Disclaimer Statement
This statement has 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.
Biotin 8000 mcg by Thorne label
The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.
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)The Ingredients in Biotin 8000 mcg by Thorne
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 container60 Amounts shown are per serving.
Biotin
No knowninteractions
Biotin (vitamin B7) is a water-soluble vitamin your body needs to turn food into energy and to support healthy hair, skin, and nails. Most people get...
Biotin monograph & interactionsOther (inactive) ingredients: Microcrystalline Cellulose, Hypromellose, Calcium Laurate, Silicon Dioxide. These complete the product’s ingredient list but are not active constituents.
Biotin 8000 mcg by Thorne Drug Interactions
We don’t currently list any known drug interactions for the mapped ingredients in Biotin 8000 mcg. This doesn’t guarantee none exist — always confirm with your pharmacist before combining a supplement with your medications.
Brand information
Manufacturer and brand details for Biotin 8000 mcg, from the product label.
Biotin 8000 mcg by Thorne: Common Questions
Does Biotin 8000 mcg by Thorne interact with any medications?
How can one product interact with so many drugs?
Where does this information come from?
What does biotin actually do?
Is this dose safe?
Could this give me diarrhea?
Can I take this while pregnant or breastfeeding?
Will this help my hair grow back?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Not sure if Biotin 8000 mcg is safe with your meds?
Our pharmacists answer your medication & supplement questions — free.
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.
The Full Monographs Behind Biotin 8000 mcg’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Sources & How We Checked
Biotin 8000 mcg'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.
- NIH Dietary Supplement Label Database (DSLD) — The official product label on file for this supplement.
- Natural Medicines (Therapeutic Research Center) — Evidence-graded clinical reference behind the ingredient interaction data.
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 4 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.
Biotin 4 references
- Debourdeau PM, Djezzar S, Estival JL, et al. Life-threatening eosinophilic pleuropericardial effusion related to vitamins B5 and H. Ann Pharmacother 2001;35:424-6. DOI
- 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
- Mock DM, Quirk JG, Mock NI. Marginal biotin deficiency during normal pregnancy. Am J Clin Nutr 2002;75:295-9. PubMed
- Sedel F, Papeix C, Bellanger A, Touitou V, Lebrun-Frenay C, Galanaud D, et al. High doses of biotin in chronic progressive multiple sclerosis: a pilot study.Mult Scler Relat Disord. 2015;4(2):159-69. doi: 10.1016/j.msard.2015.01.005. PubMed
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