Flexerall has been wonderful for me. I took it for specific muscle issues that were waking me all night long, but once I started it, I slept like a baby all night. I only take it as necessary, and a half pill to one pill per night. I might take it a few nights in a row, then not for months.

If you do supplements at all, Valerian really helped me, also - it smells AWFUL (I keep the closed bottle sealed in a plastic baggie), but it works for me.

Oh, and neither the Valerian nor the Flexerall have any after effects for me the next day. I can't take the Flexerall too late, though, since it feels like it's working in my system for a good 8-9 hours.