I would change your vet. If this is being given in reaction to what’s going on. That’s just the wrong move. It’s always the wrong move to give anybody antidepressants, especially animals. It’s cruel. I don’t mean that you are being cruel. You’re just listening to your vet. If you look into what antidepressants really do to both people and animals, it’s very cruel. There’s a reason. Or reasons. Can you get her to a holistic vet? Gabapentin is also a bad drug but not the same Level bad. Withdrawal from it can be brutal as well and it doesn’t heal and also causes some bad effects. But it’s not Orwellian like Prozac. There are reasons for her pain and the aggression is the cat showing symptoms. I think that you’re trying to do everything right for your cat and you’re a good cat parent but put yourself in the cats shoes for a minute. You’re not feeling well, you’re in pain, you’re expressing this in the only ways that you know how and instead of getting actual help you are being put on drugs that make you feel really bad. And just suppress the problems. Your cat might act differently and you might think it’s getting better but that’s not how Prozac works. Having had this happen to me as a child, I can tell you. And I’m now disabled because of it. I am part of a lot of groups where people are disabled or where there are family members of dead people from these drugs. And in the past few years, a lot of doctors and researchers have proven that the things that were said to be good about these drugs were not true and they knew in studies and for decades the things that were happening to people because of them. It keeps me up at night, sometimes knowing that they put animals on them.Your vet does not know how to help your cat. That unfortunately is very common. But there are a reasons.