Klaire Labs SFI Health 5000mcg Biotin Pills, 90 Capsules

What the brand says

A high concentration of biotin is provided for situations requiring aggressive supplementation. Biotin-dependent enzymes are involved in fatty acid synthesis, nervous system function, and skin and hair nutrition. Biotin supports carbohydrate, protein, and fat metabolism.* While biotin deficiency is rare under normal circumstances, biotin supplementation may help support healthy hair, skin, and nails in those who are biotin deficient.* Provided as small, easy-to-swallow vegetarian capsules.