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Does prednisolone make cat skin cancer worse or grow faster?

Updated On September 23rd, 2025

Pet's info: Cat | Domestic Shorthair | Male | 17 years old

Hello, My cat Bugger has had skin cancer below his eye for 4 years. He is taking one half of a 5 mg. Prednisolone pill every other day for 6 months now. The skin cancer has gotten worse since he has been on it. Could the Prednisolone have make the cancer grow? Please tell me the best way to wean him off it. His vet has been of no help to us. Please advise. Thank you. Linda

1 Answer

Most Helpful Answer

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Answered By Linda G, MS, DVM

Veterinarian

Published on June 2nd, 2021

Hello. I am so sorry about Bugger's cancer. No, the prednisolone did not actually allow the cancer to grow. Prednisolone is a steroid, & acts as an anti-inflammatory. It is often used in conjunction with some protocols to treat cancer, but it is not a cancer medication by itself. So, the cancer was going to advance & grow regardless of the prednisolone. I have no idea what kind of cancer Bugger has, but the use of surgery & an actual anticancer protocol might have been curative. This being said, the prednisolone may have contributed to Bugger surviving these past 4 years & allow him to make it to this wonderful old age. Thanks for contacting Petco Pet Education Center, formerly Petcoach.

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