Biotin (Vitamin B7)
Of 9,522 on-market biotin (vitamin b7) products in the January 2026 DSLD dump, the median declared dose is 150 mcg, and 100.0% list D-Biotin as the primary form.
Form share
Of 9,468 products with an identifiable primary form, here is the share held by each form of Biotin (Vitamin B7) on the market today.
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| Form | Quality tier | n | Share |
|---|---|---|---|
| D-Biotin | Tier 1 | 9,468 | 100.0% |
Forms we recognize but found no primary-form products for in this release: Brown Rice (biotin food-source carrier).
Form share over time
Entry-year breakdown of the top forms, 2012–2025.
Dose distribution
Deciles of declared dose per serving (mcg), among 9,338 products with a disclosed amount, against the RDA of 30.
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- 99.5% of products fall below the fairy-dust threshold (60000 mcg, 20% of the studied low dose).
- 0.3% of products don't disclose an amount because Biotin (Vitamin B7) is declared inside a proprietary blend.
Where does your dose rank?
Enter a per-serving dose (mcg) to see exactly how it compares to the 9,338 on-market biotin (vitamin b7) products with a disclosed amount. The chart above groups doses into deciles; this looks up the exact percentile for one number.
By dosage form
By target group
Top brands
Search interest over time
How often people search for biotin (vitamin b7) on Google, US only, the last 5 years. This is public interest, not DSLD label data — a spike here doesn't necessarily line up with anything on this page, and Google's own index (100 = that term's peak popularity in the chosen window) is relative, not an absolute search-volume count.
Or see this search directly on trends.google.com.
Forms explained
D-biotin is the only one of biotin's eight possible stereoisomers with vitamin activity, both the naturally occurring form in food and the form targeted by commercial synthesis (per USP monograph) -- bare "Biotin" (the largest raw_form bucket, ~15,405 rows) is treated as the same molecule.
Source: General biochemistry consensus on biotin stereochemistry; no comparative study needed since other stereoisomers aren't marketed as vitamins
Not a distinct chemical form -- a whole-food matrix/carrier ingredient, not a different biotin vitamer.
Reference values
- RDA (adult): 30 mcg — Adequate Intake, no RDA established: 30mcg/day for adults (values extrapolated from infant data)
- Tolerable Upper Intake Level (adult): not established — Confirmed not established (not merely assumed) -- no evidence of biotin toxicity in humans; studies of 10mg/day oral (and 50mg IV) found no adverse effects, and toxicity has not been reported with up to 200mg/day orally (IOM 1998). Separately, high-dose biotin supplementation is documented to cause clinically significant false lab results (e.g. troponin, thyroid panels) via immunoassay interference -- a real safety concern, but distinct from a toxicological UL.
- Studied clinical dose range: 300000–300000 mcg
- Tourbah A et al. 2016 (MS-SPI study), Mult Scler 22(13):1719-1731, PMID 27589059 -- RCT (n=154), MD1003 (biotin 100mg three times daily = 300mg/day = 300,000mcg; 100mg is the per-dose amount, not a separately tested daily dose) produced disability improvement in 12.6% of treated progressive-MS patients vs 0% placebo (p=0.0051) at 9-12 months. NOTE: a larger phase 3 follow-up (SPI2, Lancet Neurol 2020) did NOT confirm significance on the primary endpoint -- the positive MS-SPI result was not replicated.
- Note: studied_dose values are from a pharmacologic MS trial, not typical consumer hair/ nail dosing (2.5-10mg/day) -- no verifiable primary citation was found at that lower dose range this session, so it isn't represented here. "D-Biotin" and bare "Biotin" (the largest raw_form bucket in DSLD, ~15,405 rows) are treated as the same molecule -- D-biotin is the only industrially synthesized, vitamin-active stereoisomer.