Are there any medications that I can take as a sleep aid that won't cause me to fail my dot exam. I called up there and they said Klonopin and Ambien are both no-go's. It doesn't really make since to me since the side effects are gone after 8 hours even if there are traces of it in your system. And I've tried other alternatives, OTC stuff like diphenhydramine, melatonin, etc. I can't sleep without my sleep aids. Not even for a few hours.