HMB hydroxy methylbutyrate is a bioactive substance with an action similar to that of vitamins found naturally in small quantities in food & produced in the human body. HMB is produced in the body as a protective substance alleviating the effects of stress associated with physical effort fasting febrile diseases body traumas & excessive generation of oxygen free radicals. HMB limits the decomposition of body proteins potentiates fat burning lowers cholesterol level & supports the