What It DoesBiotin 1000mcg strengthens nails and supports healthy hair while helping your body convert nutrients into energy. This essential B-vitamin works as a coenzyme in metabolic processes, making it crucial for both beauty and energy production.Why It Works PROVEN NAIL STRENGTH: Clinical research demonstrates biotin supplementation increases nail thickness and reduces splitting and breakage. METABOLIC SUPPORT: Essential coenzyme for carbohydrate, fat and protein metabolism — helping your body actually use the nutrients you consume. COGNITIVE FUNCTION: Supports normal brain function through its role in energy metabolism and neurotransmitter synthesis. What's InsideClean vegetarian formula with 1000mcg biotin per capsule. Made with microcrystalline cellulose and plant-based magnesium stearate as minimal excipients. Suitable for vegetarians.Why we carry it: VitaDay provides biotin in the clinically effective 1000mcg dose without unnecessary additives or artificial ingredients.