[sirtimo]

Wellbutrin works by inhibiting the uptake of dopamine and norepinephrine in the brain. Most other anti-depressants work on serotonin. Classic SSRI's tend to have some sexual side effects like an inability to have an orgasm(yeah that sucks).

Wellbutrin does not have this side effect (thank goodness). Everyone's pharmacology is a bit different so your psych probably has a reason for using it.