The drug will be administered as tablets, injections or topical creams. If prednisone is administered to a cat with cancer, tablets or injections will be recommended. Injections are preferred as they are more effective and won't cause stomach discomfort. It is more likely that a cat with cancer will vomit the tablets, so they won't be able to enter the cat's bloodstream and help him. The dosage will be established by the vet and may vary according to the stage of the cancer, the cat's overall health and any other medications the cat is on.
Other side effects which your vet will be on the lookout for include the increased risk of infection (due to suppression of the immune system), stomach ulcers, blood clots and diabetes (particularly in cats). In some dogs and cats, determining the appropriate dosage of steroids can be challenging, and it can be difficult to ensure that the right amount of medication is given to control the disease without having significant side effects. Sometimes we need to use other drugs to compliment the use of steroids, allowing us to reduce the steroid dose whilst still controlling the disease.