Drinking milk to combat weight loss? At the moment I weight about 115lbs and definitely need to gain weight. This is without Vyvanse and I fear I'll lose a dangerous amount after a while Vyvanse. Since milk is so high in calories and is as easy to down without water (I feel like throwing up with just about all solid foods), could I just chug milk instead of eating solid food? Of course I'll still eat a regular breakfast and dinner, this is just for lunch on the weekdays.