insomnia
"I have taken this in addition to Benadryl for the last five years and noticed that it seems to work within 20 or 30 minutes as opposed to Benadryl which takes about an hour. The problem is if you take it too early before going to bed you may miss the window period and lie awake in bed restless. I've never had any of the adverse side effects like weird dreams or sleepwalking but it also seems to wake me up eight hours after taking it regardless of the time. It's probably the best as needed medicine for insomnia but would not recommend of an everyday basis."