I don't take Paxil™ (paroxetine), but Pexeva, also paroxetine, but is supposed to be easier to withdraw from if I would ever need/want to. My P-doc also says it is less likely to cause weight gain, all the things that I've read/heard about from Paxil.
I have very good results with Pexeva. It is manufactured by a different drug company and is different from Paxil with the inactive ingredient. It is not a generic. I have never taken Paxil, but my friend has been on it for over 10 years and she said her doc says it is the perfect match for her for her panic disorder!
Good luck!