Amiparen is a sterile injection solution of total amino acids intended for use in hyperalimentation and general parenteral nutrition. amiparen contains relatively larger amounts of branched chain amino acids (leucine, isoleucine and valine), which suppress protein breakdown and promote protein synthesis in the muscle. a series of preclinical and clinical studies established that amiparen was effective in sparing protein in various types of insults and malnutrition state.amiparen is indicated for amino acids supply in the following instances : hypoproteinemia, malnutrition and pre and or postoperative condition.