NOW Biotin 1,000 mcg is a water-soluble vitamin essential for normal development and body function. Biotin acts as a key regulatory element in g...

NOW Biotin 10,000 mcg is a high-potency, water-soluble vitamin essential for the normal development and function of the body. Biotin acts as a k...

NOW Biotin 5,000 mcg is a high-potency, water-soluble vitamin that helps maintain overall good health. Biotin functions as a key regulatory elem...