Which human medicines are poisonous to pets?
Updated By PetymFacts checked against official sources on
Quick answer
Many are. The ones that most often poison dogs and cats are painkillers such as paracetamol and ibuprofen, antidepressants, ADHD stimulants, sleeping tablets, heart and blood pressure pills, and thyroid and hormone tablets. Some skin creams, vitamin D supplements and sugar-free syrups containing xylitol are dangerous too. Cats are often more sensitive than dogs.
Never give your pet a human medicine unless your vet tells you to. If your pet swallows one, call your vet or the nearest 24-hour vet now with the strip or box in hand, even if your pet seems fine.
What should you do if your pet ate a human medicine?
Act first, research later. Some medicines cause signs within the hour.
If Your pet swallowed a tablet, chewed a strip or got into a pill box
Call your vet or the nearest 24-hour vet now. Pet Poison Helpline advises calling a vet right away if a pet eats a human medication. Pet Poison Helpline
If You are not sure what or how much was eaten
Take the strip, box or bottle, count what is left, and note the time. The vet needs the drug name and strength. Merck Veterinary Manual
If You want to make your pet vomit
Do not, unless a vet tells you to. The RECOVER first-aid guidelines advise against making a pet vomit at home. RECOVER Initiative (Journal of Veterinary Emergency and Critical Care, 2026)study
If It was a sugar-free syrup, chewable vitamin or gum
Check the label for xylitol and go now. The FDA says low blood sugar can start within 10 to 60 minutes in dogs. US Food and Drug Administration
If Your pet licked a cream from your skin, clothes or a cloth
Clean your pet thoroughly and call your vet. The FDA says even a very small exposure to some pain creams can be life-threatening. US Food and Drug Administration
Which human medicines are most dangerous, and what do they do?
The groups veterinary poison services hear about most. None should be given to a pet without a vet's prescription.
| What it can do to a pet | Note | |
|---|---|---|
| Paracetamol (acetaminophen) Pet Poison Helpline | Liver failure, and damage to red blood cells | Cats are especially vulnerable |
| Ibuprofen, naproxen, aspirin (NSAIDs) Merck Veterinary Manual | Stomach and gut ulcers, bleeding and kidney failure | Merck says cats are very susceptible to aspirin |
| Antidepressants Pet Poison Helpline | Sedation, wobbliness, tremors and seizures | Among the prescription drugs ASPCA sees most |
| ADHD stimulants Pet Poison Helpline | Tremors, seizures, high body temperature and heart problems | Can be life-threatening |
| Sleeping tablets and anxiety medicines Pet Poison Helpline | Drowsiness, wobbliness and slowed breathing | About half of dogs become agitated instead |
| Heart and blood pressure pills Pet Poison Helpline | Beta-blockers: dangerously low blood pressure and a very slow heart rate | ACE inhibitors are usually lower risk |
| Thyroid tablets Pet Poison Helpline | Large overdoses: tremors, nervousness, panting, a fast heart and aggression | Call the vet for any amount |
| Hormone and birth control pills Pet Poison Helpline | Large amounts of oestrogen can suppress the bone marrow | Birds and unspayed females at higher risk |
| Gabapentin, pregabalin, tramadol Merck Veterinary Manual | Sedation and wobbliness; tramadol can cause agitation, tremors and seizures | Some are also vet drugs, at vet doses |
| Vitamin D supplements and analogues Merck Veterinary Manual | High blood calcium that can damage the kidneys | Merck lists calcitriol and calcipotriene among the sources |
| Cholesterol pills (statins) Pet Poison Helpline | Usually only mild vomiting or diarrhoea | Still call the vet |
This is not a complete list. Treat any human medicine your pet swallows as a reason to call the vet.
Why are human medicines such a common poison?
They are everywhere in a home, and pets find them. ASPCA Animal Poison Control, which received calls about more than 376,000 items in 2025, ranked over-the-counter products first, at 16.9% of exposures, with vitamins, supplements and pain medicines making up most of them. Human prescription medicines came third, led by heart medicines, antidepressants and ADHD medicines.
Many poisonings are mix-ups or kindness. Pet Poison Helpline says it often gets calls from owners who gave their own medicine to their pet by mistake, which is why it advises storing human and pet medicines apart. The FDA adds that accidental exposure to human drugs, including ones applied to the skin, can be fatal to animals, and gives the simple rule: do not give human medications to your animal unless directed by the vet.
Bodies differ too. Merck says cats clear aspirin very slowly and are affected by ibuprofen at about half the dose that harms dogs, and Pet Poison Helpline says cats are especially vulnerable to paracetamol. For the painkiller question in detail, read our answer on whether you can give a dog paracetamol.
What do people get wrong about pets and human medicines?
You may have read
Half a tablet is safe for a big dog.
Myth
What the sources say
Cutting a human tablet does not make it safe. The FDA advises never giving human medicines to an animal unless the vet directs it, and only the vet can judge the drug and amount for your pet. US Food and Drug Administration
You may have read
If my pet seems fine an hour later, the danger has passed.
Myth
What the sources say
Some effects are delayed. The FDA says some dogs that eat xylitol do not show serious signs for 12 to 24 hours, and may need monitoring in hospital. US Food and Drug Administration
You may have read
A cream on my skin cannot reach my cat.
Myth
What the sources say
The FDA reports cats that became ill or died after their owners used a prescription pain cream on their own skin. The cats were never treated with it. US Food and Drug Administration
You may have read
Cholesterol and blood pressure pills are all equally dangerous.
Myth
What the sources say
Risk varies by drug. Pet Poison Helpline says statins usually cause only mild stomach upset, while beta-blockers can cause life-threatening drops in blood pressure. Your vet needs the exact name to judge. Pet Poison Helpline
How do you keep medicines away from pets at home?
Most Indian homes keep strips in a drawer, a handbag or a box on the table. These steps close the gaps.
- Keep every strip, bottle and pill organiser in a closed cupboard, not on a bedside table or dining table. Pets treat pill boxes as chew toys. Pet Poison Helpline
- Never leave loose tablets in plastic bags or packets: pets chew straight through them. Pet Poison Helpline
- Hang handbags and office bags up out of reach, and ask visiting relatives to do the same with their medicines. Pet Poison Helpline
- Store your pet's medicines away from human ones, in their original labelled packs, so no one picks up the wrong strip. US Food and Drug Administration
- Pick up any dropped tablet at once, and check under the bed and sofa if one rolls away.
- If you use a medicated cream, ask your doctor whether to cover the area, and wash or throw away cloths that held it. US Food and Drug Administration
- Read labels on sugar-free syrups, chewable vitamins and toothpaste for xylitol, and keep them shut away. US Food and Drug Administration
What if a sitter or family member is looking after your pet?
Write down exactly which medicines your pet takes, with the vet's name and number, and keep them in a separate, labelled place from the household's own. Tell carers never to give anything from the family medicine box. A Petym sitter follows the pet's plan as you write it, logs each medicine as it is given, and in an emergency calls you and takes your pet to the nearest 24-hour vet on the city's list.
Going away soon? Tell us your dates.
A checked local sitter feeds, walks and keeps your pet company at home, follows your care sheet to the letter and sends a photo every day. Petym is opening city by city: send your dates and we will tell you when a sitter can take them.
- Meet your sitter first, free
- PAN-checked, first-aid trained
- A photo every day
- Pay through Petym, never cash
Questions owners ask
Can a single human tablet kill a dog?
- It can, depending on the drug and the dog. Pet Poison Helpline says ADHD stimulants can cause life-threatening tremors, seizures and heart problems, and beta-blockers can cause dangerously low blood pressure. Do not wait for signs: call your vet or the nearest 24-hour vet as soon as you know a tablet was eaten.
My cat licked my pain cream. What should I do?
- Clean the cat thoroughly and call your vet. The US FDA reports cats becoming ill or dying after their owners used a prescription pain cream containing flurbiprofen on their own skin, and says even very small exposures can be life-threatening. Watch for lethargy, poor appetite or vomiting, and get help promptly.
Which human medicines are safe for pets?
- None should be treated as safe without your vet. Some drugs used in people are also prescribed to pets, but at doses and for reasons only a vet can judge for your animal. The US FDA's advice is simple: do not give human medications to your animal unless directed by the vet.
Are vitamins and supplements dangerous to pets?
- Some are. ASPCA says vitamins, supplements and pain medicines make up most over-the-counter poisonings it sees. Vitamin D can raise blood calcium and damage the kidneys, Merck says, and chewable vitamins can contain xylitol, which the FDA says is dangerous for dogs. Keep them shut away.
Should I make my dog vomit after eating a tablet?
- No, not unless a vet tells you to. The RECOVER first-aid guidelines for dogs and cats advise against making a pet vomit at home after swallowing a toxin. Call your vet now with the medicine's packet, so they can decide what is safe for that drug.
Keep reading
- Can I give my dog paracetamol?The painkiller question, in detail.
- Pet first aid basics
- Signs your pet needs a vet now
- Senior pets and medicationGiving prescribed medicines safely, and leaving them with a carer.
- Someone poisoned my dog
Free tools for this
Words on this page, explained
Sources
Each source was opened and read on the date shown. How Petym checks its sources
- Pet Poison Helpline: Top 10 human medications poisonous to pets (opens in a new tab)
- ASPCA: The top 10 toxins of 2025 (15 March 2026) (opens in a new tab)
- Merck Veterinary Manual: Toxicoses from human analgesics in animals (full review July 2024, updated May 2025) (opens in a new tab)
- Merck Veterinary Manual: Cholecalciferol (vitamin D3) poisoning in animals (full review November 2025) (opens in a new tab)
- US Food and Drug Administration: FDA consumer advice on pet exposure to prescription topical pain medications containing flurbiprofen (content current as of 25 February 2025) (opens in a new tab)
- US Food and Drug Administration: Paws off xylitol: it's dangerous for dogs (content current as of 17 December 2025) (opens in a new tab)
Show all 9 sourcesShow fewer
- US Food and Drug Administration: Medication errors happen to pets, too (opens in a new tab)
- Pet Poison Helpline: Acetaminophen (opens in a new tab)
- RECOVER Initiative (Journal of Veterinary Emergency and Critical Care, 2026): RECOVER guidelines: first aid for dogs and cats, clinical guidelines (opens in a new tab)