Thanks for doctors. im m28 but my weight is 48kg really underweight, in my family all are lean. now i decided to take nutrigain, is it gud, or any adv?

Underweight: I understand your desire to gain some weight, although, i joke at times that in this country it is a privilege to be thin :-). Nonetheless, before you end up taking all kinds of shady supplements, i urge you to make sure you don't have a cause for your being underweight. You may talk to your doc about doing some tests, such as to check your thyroid to make sure you're a healthy person, otherwise.