Cat safety · the medicine box
Medicines that poison cats — the Indian medicine box
Half a Crocin, a dab of hair-regrowth lotion on your pillow, the dog's flea drops: medicines that are fine for people and dogs can kill a cat. Here's what's in an Indian medicine box, how cats meet it and what to do.
Deadly to cats — never these
- Minoxidil (hair-regrowth lotions and foams) मिनोक्सिडिल Cats are more sensitive to minoxidil than dogs — licking a treated scalp, hand or pillow can be enough to cause heart failure.
- Paracetamol पैरासिटामोल Cats can't break paracetamol down — even a small amount can wreck red blood cells and the liver.
- Dog flea and tick spot-ons (permethrin) कुत्ते की पिस्सू दवा Cats can't clear permethrin: a dog spot-on on a cat — or cuddling a freshly treated dog — causes tremors and seizures, and some cats die.
- 5-fluorouracil (5-FU) skin cream Kills many dogs that swallow it; vets warn cats are very sensitive too — even a few licks may be life-threatening.
- Calcipotriol psoriasis creams (vitamin D) A powerful vitamin D: even a lick or taste can push calcium dangerously high and lead to kidney failure (Pet Poison Helpline).
Paracetamol, minoxidil hair lotion and a dog's permethrin flea drops have killed cats in tiny amounts — usually when someone meant well. If it happened, go to a vet now. Don't wait for signs.
Ranked from deadly to mild
Shelf by shelf, from pain killers to balms
Each shelf is ranked from deadly to mild. Search by medicine, brand or Hindi name, or tap a level.
No match. Try the Hindi or botanical name — or ask us on WhatsApp.
Pain & fever 4
Crocin, Dolo, Combiflam, Disprin — the strip in every kitchen drawer.
- Deadly Paracetamol पैरासिटामोल Cats can't break paracetamol down — even a small amount can wreck red blood cells and the liver. In practically every medicine box — and given by kind owners for 'bukhaar' (fever) or pain.
- Severe Pain-relief gels, sprays and creams दर्द निवारक जेल Cats are more sensitive to painkiller gels than dogs, and get them by licking your skin or grooming after a cuddle (Merck). Pain gels are rubbed on knees, backs and necks in most Indian homes — often by elders who love a cat on the…
- Severe Ibuprofen and aspirin आइबुप्रोफ़ेन / एस्पिरिन Cats are far more sensitive to these painkillers than dogs, and aspirin lingers in a cat's body much longer (Merck). The medicine box: headache, fever and period-pain tablets, and the daily heart aspirin many elders take — a…
- Severe Diclofenac, naproxen and mefenamic acid tablets Naproxen is 'very poisonous to dogs and cats' with a narrow safety margin (Pet Poison Helpline); every human NSAID can ulcerate a cat's stomach. Period-pain strips in handbags and bedside drawers, migraine tablets, and joint-pain pills for elders — plus…
Hair, skin & creams 6
Hair-regrowth lotions, pimple gels, steroid and pain creams — the ones a cat licks off your skin.
- Deadly Minoxidil (hair-regrowth lotions and foams) मिनोक्सिडिल Cats are more sensitive to minoxidil than dogs — licking a treated scalp, hand or pillow can be enough to cause heart failure. Hair-regrowth lotions are on bathroom shelves across urban India and are usually applied at night, so cats…
- Deadly 5-fluorouracil (5-FU) skin cream Kills many dogs that swallow it; vets warn cats are very sensitive too — even a few licks may be life-threatening. Dermatologists in India prescribe 5-FU cream for sun-damaged skin and some skin cancers; the risk is a cat…
- Deadly Calcipotriol psoriasis creams (vitamin D) A powerful vitamin D: even a lick or taste can push calcium dangerously high and lead to kidney failure (Pet Poison Helpline). Psoriasis creams are used daily on elbows, knees and scalps, so cats can lick treated skin or chew a tube…
- Severe Numbing gels and sprays (benzocaine, lidocaine) सुन्न करने वाली जेल Cats are more sensitive to local anaesthetics than dogs: they stop blood carrying oxygen and upset the heart rhythm, sometimes within 15 minutes (Merck). Mouth-ulcer and teething gels sit in almost every family medicine box, and it's tempting to dab one on a…
- Moderate Salicylic acid skin products (wart, corn, acne and dandruff) Cats handle salicylates badly; strong wart and corn removers are the real risk — a lick of face wash usually just upsets the stomach. Salicylic-acid face washes and serums are popular with Indian teens and young adults, and corn caps are a…
- Mild Zinc oxide nappy-rash creams डायपर रैश क्रीम A lick usually means a bout of vomiting or diarrhoea; repeated licking over days, or a chewed tube, is more serious. Homes with a new baby keep nappy-rash cream by the changing mat, where a cat can lick a smeared nappy, the…
Flea, tick & worm products 4
Dog spot-ons, sprays, shampoos and collars — fine for dogs, dangerous on cats.
- Deadly Dog flea and tick spot-ons (permethrin) कुत्ते की पिस्सू दवा Cats can't clear permethrin: a dog spot-on on a cat — or cuddling a freshly treated dog — causes tremors and seizures, and some cats die. Multi-pet homes: the dog's spot-on or shampoo used on the cat to save money, a cat sleeping against a…
- Severe Amitraz tick washes, dips and collars Vet references say amitraz should not be used on cats; overdoses slow the heart and breathing and can cause seizures. Amitraz washes are sold cheaply at vet and agri shops and online for dog ticks and mange — some Indian…
- Severe Pyrethroid tick sprays, dips and shampoos Cats are more sensitive to pyrethroids than other pets (Merck); livestock-strength sprays and dog products cause tremors and seizures in cats. Tick season sends families to the agri or vet shop for strong cattle sprays and dog washes; the cat gets…
- Severe Ivermectin (human tablets and livestock dewormers) आइवरमेक्टिन Wrong-strength ivermectin — human tablets or farm products — causes blindness, tremors and coma in cats; thin cats were hit hardest in one series. Ivermectin tablets turn up in Indian medicine boxes and cattle injections are cheap at agri shops, so they…
Mind, sleep & focus 3
Antidepressants, sleeping pills, ADHD and anxiety tablets.
- Severe Antidepressants (SSRIs and venlafaxine) डिप्रेशन की दवा Cats seem drawn to venlafaxine capsules (ASPCA); overdoses can cause tremors, fever and seizures — most treated cats recover. Depression and anxiety medicines are now common in Indian homes; a capsule dropped from a strip or left in a…
- Severe ADHD medicines (stimulants) Even small ingestions can cause life-threatening tremors and seizures (Pet Poison Helpline). ADHD medicines are prescribed to children and adults; strips in school bags and on study desks are within…
- Moderate Sleeping pills and anxiety tablets नींद की गोली Usually drowsiness and wobbliness, but some pets turn agitated instead, and big overdoses slow breathing (Pet Poison Helpline). Sleeping and anxiety tablets are common in bedside drawers, and some owners think of using them to quieten a…
Heart, BP & diabetes 4
Blood-pressure, heart and sugar tablets — one dropped pill is enough.
- Severe Beta-blockers (heart and BP tablets) Narrow margin of safety: even a small overdose can dangerously slow the heart and drop blood pressure (Pet Poison Helpline). BP and heart tablets are a daily routine for many Indian elders, often in open pill boxes on the dining…
- Severe Amlodipine and other calcium channel blockers बीपी की दवा Narrow margin of safety: a small overdose can cause a very slow heart and severe low blood pressure (Pet Poison Helpline). Amlodipine is among the most common BP medicines in Indian homes, often kept in open daily pill boxes.
- Moderate Diabetes tablets शुगर की दवा Sulfonylureas (glimepiride, gliclazide) can drop blood sugar dangerously and may injure a cat's liver; little is published on metformin in cats. India has one of the world's largest diabetic populations, so diabetes tablets are in a huge number of homes…
- Mild Telmisartan, losartan and other ACE/ARB BP tablets Usually a low poisoning risk (Pet Poison Helpline), but an overdose can still lower blood pressure for up to a day. Telmisartan is among the most common BP pills in Indian homes, often taken by elders from open pill boxes.
Balms, oils & cold remedies 4
Vicks, Amrutanjan, Iodex, essential oils, cough syrups and nasal drops.
- Severe Vapour rubs and pain balms बाम Camphor soaks through the skin and can cause seizures; wintergreen oil is an aspirin-like salicylate that cats handle badly. Balms are India's go-to for headaches, colds and aching backs — on foreheads, chests, children and pillows…
- Severe Essential oils एसेंशियल ऑयल Cats can't break down many oil compounds; on the skin, licked off fur or settling from a diffuser, oils cause tremors and even liver failure (Merck). Diffusers, Ayurvedic massage oils, nilgiri oil for colds and 'herbal' flea sprays.
- Severe Cold and flu tablets and decongestants सर्दी-ज़ुकाम की गोली Decongestants overstimulate the heart and brain, and most Indian cold tablets also contain paracetamol — deadly to cats. Cold tablets are bought over the counter and kept in handbags and bedside drawers through winter and the…
- Severe Nicotine gum and patches निकोटीन गम Nicotine is 'a rapidly acting toxin with a narrow safety margin' (Pet Poison Helpline); a chewed or swallowed gum or patch can poison a cat. Quit-smoking gum lives in pockets, desk drawers and car dashboards; flavoured gum and used patches in open…
Your medicine, their tongue
Using it yourself? Keep your cat safe
Most cats are poisoned by medicine that was never meant for them — licked off a hand, a pillow or the floor.
-
Hair-regrowth lotion (minoxidil)
Let it dry fully, wash your hands, and keep your cat off your pillow and bed while you use it. Wipe spills with a tissue and bin it where your cat can't reach.
Minoxidil (hair-regrowth lotions and foams) -
Pain gels and creams
Rub them in where your cat won't lick — cats groom the people they love — and wash your hands after.
Pain-relief gels, sprays and creams -
A tablet on the floor
Count the strip and find the one that fell before your cat does. Keep pills in a closed box, not loose on a table.
Paracetamol -
A dog and a cat at home
Use only cat-labelled products on your cat. After the dog's spot-on, keep them apart until it is fully dry, as the label says.
Dog flea and tick spot-ons (permethrin) -
Balms, oils and diffusers
Keep jars and bottles shut and high up. No diffuser in the room your cat sleeps in, and never oil on a cat.
Essential oils -
Handbags and bedside tables
Cats explore bags and drawers. Keep every medicine in a cupboard that shuts.
Kind habits, unkind results
Myth or fact? Kind habits that hurt
Nearly every medicine poisoning starts with someone trying to help. No judgement — just what the vets say.
-
Myth“It's only a lotion on my head — the cat can't be poisoned by it”
FactMost poisoned cats in the ASPCA series got it from the owner's own use — licking skin or a pillowcase, or a spill — and 8 of the 62 cats that fell ill died (Tater et al. 2021).
Minoxidil (hair-regrowth lotions and foams) -
Myth“Give the cat a Crocin for fever”
FactParacetamol is highly toxic to cats — 'even a small dose is enough to cause severe illness' (International Cat Care). A feverish cat needs a vet, never a human tablet.
Paracetamol -
Myth“A few drops from the dog's pipette is a safe cat dose”
FactOwners often assume a smaller amount of a dog product is safe — it isn't: 'Never use a dog product on a cat' (International Cat Care). Of 286 UK cases, almost every cat fell ill and about one in ten died (Sutton et al. 2007).
Dog flea and tick spot-ons (permethrin) -
Myth“It's just a skin cream — a lick won't matter”
FactPet Poison Helpline calls topical 5-FU one of the most dangerous pet toxins: 'small amounts – even a lick for some pets – are highly toxic' (Pet Poison Helpline).
5-fluorouracil (5-FU) skin cream -
Myth“Gels stay on the skin, so they can't hurt a pet”
FactIn the USA, cats in two homes fell ill or died after their owners used a painkiller cream only on their own neck or feet — 'it is not known exactly how the cats became exposed' (US FDA).
Pain-relief gels, sprays and creams -
Myth“A small piece of a painkiller will help a limping cat”
FactCats are 'especially susceptible' to ibuprofen and 'very susceptible' to aspirin (Merck). A limping cat needs a vet and cat-safe pain relief.
Ibuprofen and aspirin -
Myth“Mefenamic acid is mild — it's even given to children”
FactHuman NSAIDs 'can be extremely dangerous to pets' and should never be given without a vet (Pet Poison Helpline). Children's syrups are not cat medicines.
Diclofenac, naproxen and mefenamic acid tablets -
Myth“A little Vicks will clear a cat's blocked nose”
FactCamphor is absorbed through the skin and 'should never be applied to dogs or cats' (Pet Poison Helpline). A sneezing, blocked-up cat needs a vet.
Vapour rubs and pain balms -
Myth“Natural oils are safe home remedies for cats”
Fact'Natural' isn't safe: plant-oil flea products harmed cats even when used as labelled (Genovese et al. 2012), and concentrated oils 'should never be directly applied to pets' (Merck).
Essential oils -
Myth“A bit of a cold tablet will help a sneezing cat”
FactMost cold tablets mix paracetamol with a decongestant, and 'even small amounts of these formulations can be poisonous' (VCA). Cat flu needs a vet.
Cold and flu tablets and decongestants -
Myth“A calming tablet for people will settle an anxious cat”
FactAntidepressant ingestions are among the top accidental pet poisonings, with signs from vomiting to seizures (Pet Poison Helpline). Vets prescribe cat-specific anxiety medicines — never share yours.
Antidepressants (SSRIs and venlafaxine) -
Myth“A dab of mouth-ulcer gel will soothe a cat's sore gums”
FactA cat collapsed with breathing trouble within 20 minutes of a benzocaine cream going on its skin (JAVMA 1988). Sore gums in a cat need a vet.
Numbing gels and sprays (benzocaine, lidocaine) -
Myth“If the tick wash works on the dog, it's fine for the cat”
Fact'Amitraz should NOT be used on cats' (Pet Poison Helpline); Merck also lists cats among the animals it is not recommended for.
Amitraz tick washes, dips and collars -
Myth“Tick sprays are just insect killers — they can't hurt a cat”
FactSevere pyrethroid poisoning causes 'tremor, seizure, collapse, and death', and using a product meant for one species on another is a common cause (Pet Poison Helpline).
Pyrethroid tick sprays, dips and shampoos -
Myth“Ivermectin is safe for cats — vets use it”
FactThe dose is everything: cats overdosed by mistake developed tremors, blindness and coma (Jourdan et al. 2015; Meekins et al. 2015). Only a vet can work out a cat dose.
Ivermectin (human tablets and livestock dewormers) -
Myth“My cat's vet prescribed amlodipine, so a human tablet is fine”
FactVets do use these drugs in cats, but accidental overdose 'can result in severe, life-threatening poisoning' because the margin of safety is narrow (Pet Poison Helpline). Use only the cat's own prescription.
Amlodipine and other calcium channel blockers -
Myth“A sleeping pill will keep the cat calm on a train journey”
FactSleep aids often have the opposite effect in pets — about half of dogs that eat them become agitated (Pet Poison Helpline) — and a zolpidem-poisoned cat was stuporous, disoriented and severely wobbly (Czopowicz et al. 2010).
Sleeping pills and anxiety tablets
Think your cat ate something poisonous?
- Call your vet or go to a 24×7 pet clinic now — say what, when and roughly how much.
- Take the plant, the packet or a clear photo with you.
- Don't make your cat vomit at home unless a vet tells you to.
- No milk, oil, salt water or home remedies.
- A cat that looks fine can still be poisoned — lilies, onion, garlic and rat poison act late.
India has no pet poison helpline yet — the US lines serve North America. Near Noida and can't find an open vet? Message us and we'll help you find one. We can't give medical advice.
Good to know
Medicine questions, answered
Still unsure? Ask your vet. Near Noida and need help finding one? Message us — we'll help you find a vet, never play one.
Can I give my cat paracetamol (Crocin, Dolo) for fever?
Never. Cats can't break paracetamol down, so even a small amount can destroy red blood cells and the liver. A feverish cat needs a vet — and no human tablet, ever.
Is minoxidil hair lotion (Mintop, Tugain) dangerous for cats?
Yes — very. Cats have died after licking a little off an owner's skin, hair or pillow, or a spill from the bottle. If you use it, let it dry, wash your hands and keep your cat off your bed. If your cat may have licked some, go to a vet now, even if they seem fine.
Can I use my dog's flea medicine on my cat?
No. Many dog spot-ons contain permethrin, which causes tremors, seizures and death in cats — even a small amount. Use only cat-labelled products from your vet.
Is Vicks or a pain balm safe around cats?
Keep them away. Balms carry camphor, menthol, eucalyptus or wintergreen oil, and cats react badly to all of them — from drooling and vomiting to seizures. Never rub one on a cat, and don't let your cat lick it off you.
Can I give my cat a human cough syrup or cold tablet?
No. Many contain paracetamol, decongestants or sweeteners that are dangerous for cats. A sneezing, coughing cat needs a vet — cat flu is common and treatable.
My cat licked a cream or chewed a tablet — what now?
Call your vet or go to a 24×7 clinic now and take the strip, tube or bottle with you. Don't make your cat vomit at home and don't wait for signs: many medicines act late.
Where these facts come from
Every medicine lists its own sources with links: the Merck Veterinary Manual, ASPCA, Pet Poison Helpline, International Cat Care, the US FDA's veterinary notices and peer-reviewed case reports — plus Indian brand names so you can recognise the strip or the bottle. There is no Indian poisoning data yet, so the order on each shelf is our judgement of harm × how often Indian cats meet it.
Facts last checked
General information for cat parents, not a diagnosis or a treatment plan. The facts come from ASPCA, Pet Poison Helpline, International Cat Care, the Merck Veterinary Manual and the other sources listed on every page — and we say so when the evidence comes from dogs or people. If your cat may have eaten something harmful, call your vet.
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