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Is Sildenafil safe for dogs with kidney failure & hypertension?

Updated On September 23rd, 2025

Pet's info: Dog | Chihuahua | Male | neutered | 14 years old | 5.4 lbs

My dog is in Kidney failure and has Pulmonary Hypertension. He's been prescribed Sildenafil (0.5ml twice a day). Is this safe for his kidneys?

1 Answer

Most Helpful Answer

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Answered By Daniel Fonza, DVM

Veterinarian

Published on February 23rd, 2018

Hi there and thank you for using Petco Pet Education Center, formerly Petcoach to address your concern. Sildenafil is safe to use in dogs with kidney failure. This will help manage the hypertension. If the hypertension is not managed, the hypertension will damage the kidneys further. I hope this helps! Please let me know if you have any other questions or concerns and I would be more than happy to help you further.

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