Biotin 300 mcg Ingredients & Drug Interactions
by Rugby
What is this page for?
First and foremost: checking Biotin 300 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 300 mcg is a dietary supplement by Rugby 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 300 mcg by Rugby
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. The tablet also includes several inactive ingredients — microcrystalline cellulose, stearic acid, vegetable magnesium stearate, croscarmellose sodium, silicon dioxide, and pharmaceutical glaze — which are fillers and binders that help hold the tablet together.
Does it work?
Strong evidence
Biotin is likely effective for biotin deficiency — a rare condition, usually from certain medications or genetic disorders. For other uses, the evidence is weaker.
It's rated possibly ineffective for multiple sclerosis and seborrheic dermatitis (a flaky scalp condition), and there isn't enough reliable evidence to rate it for alopecia areata (patchy hair loss).
How safe is it?
Well-documented data
Biotin is generally well tolerated, even at fairly high doses, because your body clears excess through your urine. At very high doses — much higher than the 300 mcg here — mild diarrhea has been rarely reported.
The product is rated likely safe in pregnancy and lactation. That said, if you're thinking about taking high-dose biotin supplements, talk it over with your doctor first.
Meds to double-check
No known interactions
No interactions are documented for biotin in our data.
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.
This is a straightforward, low-dose biotin supplement with no known drug interactions — good if you've been diagnosed with biotin deficiency or want basic B-vitamin support. If you're pregnant, breastfeeding, or taking high-dose biotin for a specific condition, run it by your doctor or pharmacist first to make sure it fits your situation.
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 Apr 25, 2019.
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 300 mcg, straight from the product label.
| Brand | Rugby |
|---|---|
| Barcode (UPC) | 005366659015 |
| Net contents | 100 Tablet(s) |
| Market status | On market |
| Date entered into DSLD | Apr 25, 2019 |
| DSLD ID | 200850 |
| Product type | Vitamin |
| Supplement form | Tablet Or Pill |
| Dietary claims / uses | Nutrient, All Other |
| Intended target group(s) | Children 4 or More Years of Age, Vegetarian, Adult (18 - 50 Years), Gluten Free |
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 300 mcg by Rugby, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Biotin | 300 mcg | 100% |
Other ingredients: Microcrystalline Cellulose, Stearic Acid, Vegetable Magnesium Stearate, Croscarmellose Sodium, Silicon Dioxide, Pharmaceutical Glaze
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.
Formula
Vitamin B Group Supplement
FDA Statement of Identity
Dietary Supplement
Precautions
Tamper resistant - Do not use if safety seal under cap is broken or missing
Keep out of reach of children
Suggested/Recommended/Usage/Directions
Directions: Adults and children 4 or more years of age: Take 1 tablet daily.
Formulation
Free of: starch, soy, corn, gluten, yeast, preservatives, animal by-products, artificial colors-flavors.
Storage
To preserve quality and freshness, keep bottle tightly closed. Store between 15(0)-30(0)C (59(0)-86(0)F).
General
Rev. 07/15 R-92 Re-order No. 370334
General Statements
50/60
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Biotin 300 mcg by Rugby 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 300 mcg by Rugby
This is the 1 active ingredient this product is made of. Select it to open its full monograph.
Serving size1 Tablet(s) Dosage formTablet Or Pill 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, Stearic Acid, Vegetable Magnesium Stearate, Croscarmellose Sodium, Silicon Dioxide, Pharmaceutical Glaze. These complete the product’s ingredient list but are not active constituents.
Biotin 300 mcg by Rugby Drug Interactions
We don’t currently list any known drug interactions for the mapped ingredients in Biotin 300 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 300 mcg, from the product label.
Rugby
See all Rugby products- Name
- Rugby Laboratories
- Street Address
- 31778 Enterprise Drive
- City
- Livonia
- State
- MI
- ZipCode
- 48150
- Phone Number
- 1-800-645-2158
- Web Address
- www.rugbylaboratories.com
Biotin 300 mcg by Rugby: Common Questions
Does Biotin 300 mcg by Rugby interact with any medications?
How can one product interact with so many drugs?
Where does this information come from?
Is biotin safe to take while I'm pregnant or breastfeeding?
Will biotin help my hair grow or stop hair loss?
Can biotin cause side effects?
What does biotin actually do in the body?
Is this product good for seborrheic dermatitis?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Not sure if Biotin 300 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 300 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 300 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