What on earth can i feed him. He has reliably eaten all of his 10 years but earlier this year he started being sick - he was on Hill's Science Plan. So i tried Go-cat same effect. Tried Purina - made by same company so same effect. He has been eating Brekkies for the last 2 months and has now started throwing up again.
P.s. I did take him to the vet and spent money on flea stuff, worming and having 3 teeth removed but no useful tips re diet.
No advice really but mine is often sick, seems to be related to being greedy and eating lots at once. Always sick if she scrounges wet food off anyone, can't tolerate it at all but can eat most of a pigeon no probs
You really need to go back to the vet and get him checked again - they might be able to offer more help this time. Sadly not everything is fixed first time at the vets, but they are not going to put the cat through investigations and that for a first presentation in most cases either. Maybe this time they can do a bit more to check things out.
you could try royal canin, you can get it from the pet store or the vets. they do loads of different types for every condition! we got it for our kittens when they had cat flu. have you given him fur ball treatment? could it be these making him sick? x