I've been taking risperidone for several years. I was on a high dose, but have tapered down to a low dose. For many years, I wasn't concerned with having sex. Over the past 2 years I have has a desire to have sex, but have had very little success. I researched my all medicines and found the antipsychotic, Risperidone, can cause ed. I want to try another anti-psychotic, but my Psychiatrist does not want to make the change. I've tried Viagra, tadalafil, and some supplements with limited success.