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My dog takes heart medication, can he have a slice of lemon?

Dogs · Food safety

Last reviewed: 2026-09-05 · Reference ranges: ASPCA, Pet Poison Helpline & Merck Veterinary Manual

Short answer

No, it's best to avoid it. The citric acid and oils can upset his stomach and potentially interfere with how his medication is absorbed. Offer a bland treat instead and keep all citrus out of reach. If he accidentally eats some and you see vomiting or lethargy, contact your veterinarian.

Lemon — Food safety facts

Feed with care · Dogs · full breakdown on the linked food page

The acid and peel oils irritate the mouth and stomach. Never give lemon juice or zest.

The full verdict, portion guidance and serving notes are collected on the Lemon food facts page.

Open the full food page: Lemon food facts →

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