Benadryl (diphenhydramine) and Unisom (doxylamine succinate) are sleep aids that can be purchased over the counter. Both medications are antihistamines that have sedative side effects. Generic ...

There’s a lot going on here. First off, I completely agree with your cardiologist that the sleep aid you were taking, like ...

like most over-the-counter sleep aids, contains diphenhydramine, an antihistamine that sedates some people. The problem with this medicine is that the quality of sleep isn’t good for many people.