That's not suppose to happen. Seratonin syndrome? I'd think twice and think about telling a doctor or if symptoms persist, go to the ER. Are you or have you done any other related drugs?
I would kindly ask that you close this post as it was my younger sibling pulling a prank on me. You're more likely to catch a buzz from smoking catnip than from prozac lol.
While doing a little research on the topic, I seen that prozac is a strong p-glycoprotein inhibitor, which could benefit recreational loperamide use, and possibly rec' sub use..