anxiety
"This stuff is like an OTC version of Benadryl (it's an anti-histamine).  It has been helping me ween off of the Klonopin I've been taking to help me sleep for the last 2 years.  This stuff takes almost an hour to kick in, but when it does, it almost always kills my anxiety at times when benzos didn't.  If you're gonna take it for sleep, take it at least an hour before you plan on going to bed and make sure you have 8 to 9 hours to sleep because it will knock you out.  Grogginess is it's biggest negative, along with tolerance building up fast, so I try to take every other day if I can, though it's non-addictive and safe to take regularly at least far safer than a benzo."