welcome to HCM!
Endura mass is a balanced formulation of soy proteins
, carbohydrates, fats, minerals and vitamins
, there is no side effect except that it doesnt work for increasing weight of some people who have some other reason of low weight.
It provides up to 3480 extra calories per day other than the calories gained by regular diet. However for good physique, regular exercise is suggested.
hope this will help.take care!