Lisinopril and Pets

Lisinopril is a prescription ACE inhibitor used in humans to manage high blood pressure, heart failure, and recovery after a heart attack. While it is sometimes prescribed by veterinarians for dogs in very specific circumstances, it is not a medication that should ever be given to pets without professional guidance. Cats are especially vulnerable, and even a small dose of a human lisinopril tablet can cause life-threatening low blood pressure.

Pets usually become poisoned by lisinopril after chewing into a pill bottle, swallowing a dropped tablet, or being accidentally given a human dose. Because pets are much smaller than people and metabolize drugs differently, a dose that seems minor can quickly lead to dangerous drops in blood pressure, weakness, vomiting, and kidney damage. Symptoms may appear within 30 minutes to a few hours after ingestion.

If you suspect your dog or cat has eaten lisinopril, treat it as an emergency. Call your veterinarian or a pet poison control center right away. Do not induce vomiting unless a professional tells you to, and bring the medication bottle with you so the veterinary team can determine the exact dose and strength.

Prevention is the safest approach. Store all human medications, including lisinopril, in a secure cabinet or container that your pets cannot open. Take pills over a sink or closed container to avoid dropping tablets, and never leave medication bottles on counters, nightstands, or bags where curious pets can reach them.