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We are using L-Lysine MonoHCL -- 657-27-2 -- feed grade L-Threonine -- 6028-28-0 -- feed grade L-Tryptophan powder -- 73-22-3 -- food grade L-carnitine -- 541-15-1 -- Pharmacy Grade Valine -- 72-18-4 -- feed grade L-Arginine -- 74-79-3 -- food grade Zinc Oxide -- 1314-13-2 -- pharmacy grade Nicotinamide -- 98-92-0 -- Industrial Grade