Paroxetine
"I started using paroxetine 12.5 CR generic (Pexep 12.5 CR) - it was to treat my mild depression, mostly caused by moderate GAD (general anxiety disorder) and moderately severe social phobia.

First 2 days were mild headaches (not bad enough to get an aspirin), also felt noticeably more tired than usual. 3rd day, felt great. Not like an 'on' switch from the day before, but I did feel noticeably more comfortable around people and just felt better.

Did not have any problems with libido or weight gain."