insomnia
"Diphenhydramine is an extremely effective sleep aid. It takes half an hour or less for 25 mg to knock me out. 



The biggest problem I have with diphenhydramine is that it makes me feel kinda' groggy and nauseous the next day. I feel like I'm walking around in some weird twilight and food just doesn't taste good to me.



Still, out of the three sleeping pills I've tried, diphenhydramine is by far the most effective. Ambien made me feel like I was on a roller coaster and melatonin mainly makes me fall asleep a little faster."