Hello I have gone through your question and understand your concerns. The problem appears to be low B.M.I, undergo stool examination to rule out parasitic infection along with thyroid profile. Adding lean protein like egg white, turkey, chicken breast, fish and red meat will surely help increase the protein in body which is essential for building muscle. Amway supplement can be used daily along with lukewarm milk (not hot as heat causes break down of protein present in the supplement). Apart from diet, incorporate exercise in your daily routine to activate your body and musculo-skeletal system. Good luck. Hope your concern is answered. Thank you.