Sleep is so important, and OTC sleep products should only be used sporadically. What they do is suppress REM sleep by extending the "deep sleep" stage. They make you sleep but after a few weeks you are needed the REM sleep mode, where your brain makes sense of the day, and without that your thinking gets messed up. In my own experience, I think lack of REM sleep is a lot like "alcohol thinking".
So, OTC sleep products are great for now and then, but I suggest you develop a healthy sleep pattern without meds. That way your body will always get the rest you need with natural patterns.
I know, just one more thing you need to work on, but I think sleep is under-rated as a tool for recovery.