We have all experienced the frustration of not being able to sleep. You spend the whole night tossing and turning or waking in fits, and then you have to go through a whole day feeling tired, groggy, and unrested. It is not only frustrating, but it often seems like there is little you can do to solve the problem. The next night, the same problem occurs and the pattern continues. But it does not have to if you use Avinol PM.