What vitamins can i take to gain weight?

Weight gain: Make sure you're getting enough calcium and vitamin d, dietary protein, healthy fats. If you're otherwise healthy and want to put on muscle mass, make sure your intake of protein is sufficient and you're doing strength training. There are prescription medications we sometimes use to stimulate the appetite and help with weight gain.

Weight gain: To gain weight you must consume more than you burn at the gym. Also take multivitamins with b complex and protein shakes.