I have been on the generic version of Wellbutrin Xl since January...

I have been on the generic version of Wellbutrin Xl since January 09. About 6 weeks ago I noticed a lot of hair loss. A week or so ago it increased and my thick hair is thinning so quickly I am panicked. I contacted my doctor on Monday morning and he advised I stop taking it right away. 150 mg a day. I have noticed my scalp is very itchy and today the hair has not stopped coming out. My doctor told me the hair will grow back but I don't know I believe him at this point. He wants me to go med free for 2 weeks until I see him. A little nervous about withdrawal and how I will feel med free since the depression was intolerable. Has anyone had significant hair loss with this drug and seen it come back after quitting the meds?