Hi. I am on 40mg of Paxil which I take each morning. I find that it helps a great deal from panic attacks along with my other meds. Yes, it can make some people drowsy at first. It does take some time to really feel it "kick" when you take it. The only side effect I find is that my dreams at night are "wild".
I hope this helps a bit.
Currently taking Paxil 40mg, Clonazapm 3mg, Seroquel 150mg, and Remeron RD 45mg daily.
Suffer from depression, generalized anxiety dissorder, and OCD.