Yes, paracetamol is highly toxic to pets, and can be fatal, even in small doses. It should never be given to a pet without explicit veterinary instruction.
A 15 mg/kg therapeutic dose of paracetamol has been established for dogs . By contrast, a dose of 150 mg/kg is lethal for dogs. High quantities of paracetamol damage the liver ( hepatic cytolysis , i.e., destruction of liver cells) and red blood cells ( haemolysis , destruction of the body's oxygen-carrying cells).
Paracetamol is highly toxic to cats, causing symptoms like swelling, difficulty breathing, and lethargy. Immediate veterinary attention is critical even if vomiting hasn't occurred. Treatment may include activated charcoal, oxygen therapy, and medications to protect the liver and red blood cells.
Always contact a vet for advice immediately if you think your pet has ingested a large or unknown amount of paracetamol. Most cases of overdose require immediate emergency care. Dogs that overcome paracetamol intoxication may require liver support for some time.
No, you cannot give paracetamol. The only safe over-the-counter pain medication for dogs is aspirin.
Dogs: 0.2 mL of Paracetamol (equivalent to 10mg) per kg BW orally twice a day. Rabbits: 0.4 mL to 10 mL Paracetamol (equivalent to 200mg to 500mg) per kg BW orally. Rodents: 0.02 mL to 0.04 mL of Paracetamol (equivalent to 1-2 mg) orally.
This medication will take effect quickly, in about 1 to 2 hours. This medication is short-acting, meaning that effects should stop after 24 hours but may be prolonged in pets with kidney and/or liver disease.
Overdose can lead to liver failure and death. As an adult the maximum safe dose is 2 tablets (500 mg each) taken no more frequently than every 4 hours. In total no more than 8 tablets should be taken in any 24 hour period. At even slightly higher doses, paracetamol can cause severe liver damage.
Laxatives and medications used to empty the bowels may be recommended in some instances to help remove the poison from the gastrointestinal tract. If the poison cannot be physically removed, sometimes activated charcoal can be administered by mouth to prevent further absorption by the gastrointestinal tract.
If the overdose is very large, symptoms develop in 4 stages:
Go to the nearest emergency department (A&E) if:
The top "silent killers" in cats are Chronic Kidney Disease (CKD), often going undetected until 75% kidney failure, and Hypertension (High Blood Pressure), which damages organs without obvious signs until blindness or seizures occur, notes Muirfield Animal Hospital, Pet Health Network, www.springwoodvets.com.au, Close Veterinary Clinic, Killarney Animal Hospital, Physicians Mutual Insurance, Sykesville Veterinary Clinic, Mona Vale Veterinary Hospital, Nimbus Pet Hospital, Hill's Pet Nutrition, Covetrus North America, ASPCA Pet Insurance and PetCareRx. Other serious conditions include Hyperthyroidism, Heart Disease (like HCM), and Fatty Liver Disease (Hepatic Lipidosis).
Paracetamol is a very popular painkiller in humans but it can be toxic or fatal in small animals. Dogs are less sensitive to paracetamol than cats. A 20 kilogram dog would need to ingest over seven 500mg tablets in order to suffer toxic effects. In cats, one 250mg paracetamol tablet could be fatal.
Heartworm disease is among the top silent killers of dogs and cats, and it's a slow and insidious disease which gradually incapacitates them. By the time pet owners notice the giveaway signs of this disease, serious damage may already have been caused.
A standard in most homes, we use paracetamol fairly regularly for pain such as headaches or muscle pain. Sadly, paracetamol is hugely toxic in cats and as little as a single tablet can kill. This also includes child liquid formulations.
Poison pills that can harm pets
The first signs of poisoning in dogs vary but often include vomiting, diarrhea, drooling, lethargy, and tremors, alongside potential agitation, pale gums, or unsteadiness, with severe cases leading to seizures or collapse. These symptoms depend on the toxin, but any sudden onset of illness after potential exposure to household cleaners, medications, or toxic foods (like chocolate, xylitol) warrants immediate vet contact, as some poisons act very quickly.
The chance of recovery depends on the severity of the situation, and how badly internal organs such as the kidneys have been damaged. Taking your dog to the vet as soon as you suspect ingestion of antifreeze greatly increases their chance of recovery.
If your pet has ingested a poison, try to rinse or wipe out the mouth with a damp towel/flannel. Do not give your pet anything to eat or drink before speaking with the Animal Poisons Helpline or a vet.
Paracetamol is a medicine used to treat mild to moderate pain. Paracetamol can also be used to treat fever (high temperature). It's dangerous to take more than the recommended dose of paracetamol. Paracetamol overdose can damage your liver and cause death.
While paracetamol is safe in normal doses, it is hepatotoxic and potentially fatal in overdose. Fortunately, N-acetylcysteine (NAC) is a safe and effective antidote which if used correctly prevents serious hepatic injury after paracetamol overdose.
Mortality from paracetamol overdose is now about 0.4%, although without treatment, severe liver damage occurs in at least half of people with blood paracetamol levels above the UK standard treatment line.
Paracetamol, while safe for humans, can be extremely toxic for your dog (particularly if the wrong dosage is given), and can result in serious liver damage or problems with their red blood cells.
The listed dose in most vet formularies is 10mg/kg twice to three times daily," Nick explains. "For a 10kg French Bulldog, for example, this would be 330mg three times daily at the top end of the dose range, down to 100mg two or three times a day."
An antidote is available for acetaminophen poisoning called N-acetylcysteine. Other medications, such as liver protectants, may also be given. If liver damage occurs or methemoglobin levels in the blood rise rapidly, more intensive treatment will be needed.