Hi Dear, Welcome to Health Care Magic Team. Understanding your concern. As per your query you wanted to put on some weight. First of all i must tell you body weight and height should be proportinate. You have not mentioned your height here otherwise ideal weight for you could be told. Second thing is do you want to put on muscle weight or fat weight as increase in weight could be possible in both way. I would suggest you to have diet rich in carbohydrates, banana, egg, rich in fatty substances. Certain body excercises will help you to put weight. If we talk about medicines for weight gain tablet you can take Cyproheptadine ( Periactin ) tablet as it will stimulate appetite and in turn will cause weight gain. Hope your concern has been resolved. Get Well Soon. Best Wishes, Dr. Harry Maheshwari