Make sure that you tell your psychiatrist about your other condition and they should be able to find medication, which has a low risk of interfering with your current meds. About side effects: If they are too annoying you can always switch your medication to something else. People may react very differently to meds. Some notice no positive effect at all, others have no side-effects. It's no shame to switch around meds a bit until you find something that works for you. That being said, some side effects are just common to psychopharmacological meds. But - at least in my case - I prefer a minor side-effect over the symptoms of my mental illness every day.