I ve used Advil PM, in the recent past to help get a full night s sleep. However, recently I tried to stop taking Advil PM (1 pill) at bedtime. I had severe side effects which I believe were from my two night without any Advil PM. Is this possible? Side effects from stopping use of Advil PM I experienced were nausea, dizzy, extreme headache (migraine). Since, this experience I ve gone back to using Advil PM in smaller and smaller amounts to very slowly remove my chemical dependency on Advil PM. Am I correct in my beliefs?