Hypotears a91b13a8 The Wellbutrin and sex drive relationship hasn t been deeply studied, but some limited studies have shown that the side effects of bupropion may include increased libido. KEY POINTS: tremor (13.5%), agitation (9.7%), dry mouth (9.2%), constipation (8.7%), excessive sweating (7.7%), dizziness (6.1%), and nausea/ excessive sweating (especially at night); heart rhythm problems...