🐱 Medications · vet-sourced verdicts
Which human medications are toxic to cats?
Never give cats human medication without a vet's explicit instruction — common painkillers like ibuprofen and acetaminophen are among the leading causes of pet poisoning, and the "safe" exceptions are dose-critical. Here's how each medicine-cabinet staple ranks.
⚠️ If your cat got into a "never" item, act now — don't wait for symptoms. Call your vet or a poison line: ASPCA 888-426-4435 · Pet Poison Helpline 855-764-7661. 60-second emergency check →
🚫 Never — keep away (9)
💊Acetaminophen (Tylenol)Cats are extremely sensitive — even a single tablet can be fatal, starving the body of oxygen. Treat any amount as an emergency.No💊Ibuprofen (Advil)Cats are even more sensitive than dogs — ibuprofen can quickly harm the kidneys and stomach. Never give it.No💊AspirinCats break aspirin down very slowly, so it builds to toxic levels fast. Never give it without veterinary direction.No💊Naproxen (Aleve)Cats are highly sensitive to naproxen, which can rapidly damage the kidneys and stomach. Never give it.No💊Pepto-BismolPepto-Bismol contains a salicylate (an aspirin-like compound) that cats process very poorly. Don’t give it to cats.No💊Adderall (ADHD meds)Stimulant medications like Adderall are very toxic to cats, racing the heart and causing tremors. Treat any ingestion as an emergency.No💊Vitamin D supplementsToo much vitamin D is toxic to cats, harming the kidneys and heart as calcium builds up. Keep supplements and creams out of reach.No💊Iron supplementsIron supplements are toxic to cats, irritating the gut and damaging organs. Keep all vitamins out of reach and call your vet if any are eaten.No💊AntidepressantsHuman antidepressants are dangerous to cats and can cause tremors, a racing heart and agitation. Treat ingestion as an emergency.No
⚠️ Caution — limits apply (5)
💊MelatoninMelatonin is occasionally used in cats under veterinary direction. Never give human gummies, which may contain toxic xylitol.In moderation💊Benadryl (diphenhydramine)Benadryl is occasionally used in cats under a vet’s direction. Never give combination cold/allergy products, and confirm the dose with your vet.In moderation💊Imodium (loperamide)Imodium is not recommended for cats except under direct veterinary supervision, as they tolerate it poorly. Check with your vet.In moderation💊Antacids (Tums)Antacids are occasionally used in cats under veterinary direction. Confirm the product and dose with your vet, and avoid any containing xylitol.In moderation🍬Cough dropsCough drops offer nothing good for cats and may contain xylitol or strong menthol. Keep them away.In moderation
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By the CanMyPet Editorial Team · Verdicts reviewed against ASPCA Animal Poison Control, the American Kennel Club (AKC) and Pet Poison Helpline · How we review →
CanMyPet provides general information reviewed against trusted sources (ASPCA, AKC, Pet Poison Helpline). It is not a substitute for professional veterinary advice. When in doubt, always contact your veterinarian.