My 15 year old cat was just diagnosed with cat acne under her chin. There are several black and red bumps, she's been licking her paw and rubbing at it so there's pus. My vet prescribed Animax ointment and antibiotic pills along with cleaning her chin with a warm compress. We've also changed her food and water dishes to stainless steel (were glass). When I apply the dab of Animax, she will lick her paw and rub the chin then re-lick so she's digesting the ointment. She then throws up later and it's fairly violent and yellow. I'm not going to use the ointment anymore. She won't eat her food either. She's very quiet and worn out now. Has anyone had the Animax-throwing up problem with their cat?