Biotin (Vitamin B7)

What Is Biotin (Vitamin B7)?

Biotin is a water-soluble B-vitamin that serves as a covalently bound coenzyme for five carboxylase enzymes involved in fatty acid synthesis, gluconeogenesis, and branched-chain amino acid catabolism. Unlike most vitamins, biotin has an Adequate Intake (AI) reference value rather than a Recommended Dietary Allowance (RDA) — this means that while biotin is recognised as an essential nutrient, the evidence base for establishing an average requirement across the population is insufficient to set a formal RDA, so an AI is used instead.

Biotin deficiency is rare in healthy individuals consuming a varied diet. It is most commonly encountered in cases of prolonged raw egg white consumption (avidin in raw egg white binds biotin, preventing absorption), long-term total parenteral nutrition without biotin supplementation, or certain genetic disorders of biotin metabolism.

Specification & Form

How It's Sourced

YNP Ingredients sources Biotin from certified manufacturers in China, supplied with FSSAI-compliant documentation.

Reference Values

Applications

• Hair, skin, and nail (HSN) supplement formulations — the most common commercial positioning
• B-complex multivitamin blends
• Prenatal and maternal health formulations
• Metabolic health and energy metabolism products

Industries Served

Nutraceuticals/Dietary Supplements · Functional Food/Beverage

Regulatory Note — Laboratory Test Interference

The FDA issued a safety communication in 2017 warning that biotin supplementation at doses of 5 mg/day or higher (a level found in many commercially marketed hair and nail supplements) can interfere with immunoassay-based laboratory tests, producing falsely high or falsely low results for thyroid function tests, cardiac troponin, and other analytes. This does not indicate that biotin is harmful to the consumer — it is an analytical interference. However, formulators of high-dose biotin products should be aware of this and consider whether label guidance is appropriate.

Buyer Checklist

• Pack size and MOQ confirmed directly with team (high-potency vitamin format)
• Intended product category and dosage confirmed
• If formulating above 5 mg/day dose, aware of FDA lab test interference note
• COA confirming assay/purity (potency, expressed as mcg or mg per gram)
• FSSAI-compliant documentation confirmed

Common Mistakes

Claiming biotin "promotes hair growth" without qualifying the evidence. The evidence for biotin supplementation improving hair or nail quality is primarily in individuals with confirmed biotin deficiency — evidence in biotin-sufficient individuals is limited. Regulatory bodies in several markets have not authorised broad hair growth claims for biotin.

Not specifying potency (mcg/mg per gram) when ordering. Biotin powder is available at different potencies; confirm the active content per gram to ensure correct dosing.