**Biotin** at 5,000 mcg puts you at the top of the typical supplement range, well above the 30 mcg RDA. The catch: clinical research supporting biotin for hair and nail growth is largely limited to people with actual biotin deficiency or brittle nail syndrome. If you're not deficient, the evidence that this dose will improve your hair is thin.
At 5,000 mcg you're getting a meaningful dose for metabolic support — biotin is a cofactor your body uses to process fats, carbohydrates, and amino acids. The single-capsule serving keeps things simple, and 120 capsules give you a four-month supply.
One important caveat: biotin at this dose can interfere with blood tests, including thyroid panels and cardiac markers. If you have lab work coming up, stop taking it at least 48 hours beforehand — this is something most labels mention but few people actually notice.
BioStacksAsk AI about this product
What it does
Vitamin B7
Form not confirmedGrade —
Supports normal fat and amino-acid metabolism; hair-growth benefits without deficiency have not been established.
Ingredients (1)
Other ingredients
Rice FlourFiller
Rice-based ingredients carry risk of inorganic arsenic contamination (FDA and Consumer Reports). Rice accumulates arsenic from soil at higher rates than other grains. Used as a cheap filler — adds nothing beneficial.
Silicon DioxideAnti-caking
Fine silica powder used to prevent clumping
HypromelloseCapsule
Plant-derived capsule material from cellulose
Stearic AcidLubricant
Saturated fatty acid used as tablet lubricant
Lab testing
How to take it
With or without food
On the label
Suggested Usage: Take 1 capsule daily with a meal.
Price check
$9.43
Cheaper than 82% of 140 vitamin B7 supplements
Similar products
Sources & Scoring
Nutrient data (RDA, UL, and safety thresholds) sourced from the NIH Office of Dietary Supplements and the National Academies Dietary Reference Intakes (DRI).
This is not medical advice. Consult a healthcare provider before making changes to your supplement routine.
The score analyzes what's on the label: ingredient doses vs. studied ranges, chemical forms, evidence levels, and known interactions. It does not verify label accuracy or test for contaminants — for that, look for third-party certifications like USP or NSF.
Not medical advice. Consult your healthcare professional.