My neurologist suggested I try Periactin, since I am sensitive to several medications. I’ve read it’s usually prescribed for children. I have allergies and already take Allegra, but my allergist said this won’t be a problem. The one potential side effect that troubles me is weight gain. This drug is often used to increase appetite. I have enough trouble maintaining my weight as it is without adding a drug that will make me hungrier. My question is: have any adults tried this and what has been your experience with various side effects? Also, did it help you or not? Thanks much!