CatsPet parentNovember 12, 2026

If I’m using it and not seeing her for a day or two afterwards, is it possible that it…

Hello! I am looking into using minoxidil for hair growth, however my girlfriend has her own cat and many others she cares for, and I know that it’s toxic to cats so I’m concerned that when I visit her it will be an issue. If I’m using it and not seeing her for a day or two afterwards, is it possible that it will still cause harm?

A licensed veterinarian’s answer

DWDylan Wilson, DVMVerified VetSmall Animal, Mixed Animal, Preventive Care, Laboratory Medicine · KY license 293504Answered 12h ago

Hello, sorry to hear you're concerned. Yes, minoxidil is very toxic to cats and they should have no skin contact or ingestion. Thoroughly wash hands or wear gloves when applying to areas of the body. Likewise, cover areas so that there is no skin contact or chance of licking by a pet. A very small amount can be fatal to smaller dogs and cats. Oral minoxidil does not carry the same risk of exposure unless a pet has access to the medication itself.

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