I took my cat to the vets last year for cystitis treatment. When she had her 2nd injection of cerenia she started vomiting and would not drink either. I was then backwards and forwards to the vets having blood tests, xrays and lots of other injections and tablets and it cost me around £2000 eventually. Something the vet gave her did make her better after lots of journeys. As I did not want her to set off being ill again I decided not to take her for her booster vaccination but this year I was invited back to the vets for an update of her vaccinations and after her 2nd injection of leucofeligen she was sick on the way home again and another couple of times. This time though she started eating and drinking again and has not been sick since but I feel as though my pets are being made ill on purpose so the vets get more money and am considering changing vets but not sure whether another vets would be any better.