Alpha Titan Testo doctor will want to review the medications you are already taking to see if any of these tend to cause sexual side effects. For example, antidepressants, such as paroxetine (Paxil) and fluoxetine (Prozac, Sarafem), may decrease sexual desire. Switching to bupropion (Wellbutrin SR, Wellbutrin XL), another type of antidepressant, usually improves sexual desire. Sometimes, this medication is prescribed to treat hypoactive sexual desire disorder.