The product is gluten-free! Like all BioTechUSA products, BCAA+B6 consists of safe and carefully selected ingredients. BCAA + B6 - 100 tablets. BCAA 2:1:1 4000 mg. Ingredients: BCAA 2:1:1 (of which L-Leucine, of which L-Isoleucine, of which L-Valine), Vitamin B6.