The meds may not actually make you gain the weight, but some will make you feel like you need to just eat, eat, eat. That's the whole point, these pills disort what "Your Portions" are. Waking up after you are sound asleep to eat is not normal, and then wanting to eat all day, when you know you don't need too, and have 'never' been like that, That Will cause weight gain. Both seroquel and now Zyprexa have done that to me.