Hi, I recently discovered I take three medications that metabolize by the same liver enzyme, paroxetine 20mg, wellbutrin 300mg, risperidone .75mg for 3 years. I ve had no side effects or problems with any of my medications. I ve had one pharmacist tell me not to worry that it is rare for drugs to alter the metabolism of other drugs, and is patient dependent with only being a possibility for some, and thats why the interaction checker states may happen, i guess meaning a possibility. I would appreciate another opinion on this, because i am a little worried. Thank you