The BCAA"s l-leucine, l-isoleucine and l-valine are probably the most essential amino acids for athletes in training. They account for 33% of muscle protein. Some experts beleive that even moderate exercise can increase your body"s need for leucine by up to 240%.By taking Reflex Nutrition BCAA"s before and after exercise you can increase nitrogen retention, boost protein synthesis and protect your muscles from the stress and trauma of heavy exercise.IngredientsReflex Nutrition BCAA Contains L-Leucine, L-Isoleucine, L-Valine, magnesium stearate, silicone dioxide, pyridoxine hydrochloride, capsule shell (gelatin).DirectionsTake 6 capsules of Reflex Nutrition BCAA 30-40 minutes before training, and another 6 immediately after training.