Branched Chain Amino Acids have a pharmaceutical grade.

NOW Branched Chain Amino Acids (BCAA) are three irreplaceable amino acids that are contained in excess in the muscles.  Branched Chain Amino Acids Leucine, Isoleucine and Valine are three of the eight irreplaceable amino acids that the human body must obtain from food. These amino acids can not be synthesized in the liver.
 
Method of administration: As a dietary supplement, take 4 capsules 1-2 times a day on an empty stomach, especially before and after workouts.