Astymin (Tryptophan) Syrup contains crystalline essential amino acids that help maintain overall wellbeing and normal growth. It is commonly used for the diagnosis or treatment of Trauma, Stress, Injury, Phenylketonuria, Anorexia, Poor brain function related to liver disease, Mania, Muscle breakdown. It has some side effects such as Allergic rejection and reactions, Abdominal cramps,Bitter taste in the mouth. FOR OTHER USES NOT STATED, CONSULT THE PHARMACIST.