Hi Ashwini, Thanks for writing in HCM. I understand your concern that you need to gain weight. Endura mass is one of the products used as weight gain supplement. They tend to ignore the fact that they too can cause side effects with long term usage. These include: Damage to muscles, decrease in bone density, increase in growth of body hair as well as facial hair, hormonal imbalance, fatty liver, depression and lethargy. People who are diabetic need to avoid this weight gain supplement. Also these supplements should not exceed the dosage as recommended. Hence, it is always advisable to gain weight by natural diet, particularly rich in protein but with a balanced diet. You can consult clinical nutritionist for proper advise in this regard. Wish you all the best.