"i&#039;m a 22 year old guy who went on fanapt about 8 months ago for bipolar disorder. i&#039;m pretty sure it helped me function in college again, calmed me down, stabilized my mood. the one problem was it demolished most of my sexual functioning: i completely lost the ability to ejaculate, could rarely get and keep an erection, and had significantly less sex drive. i have been talking to my psychiatrist about going off fanapt soon because i don&#039;t think it is worth the sexual side effects."