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Aspirin (acetylsalicylic acid)

Do not give aspirin to a dog or cat on your own. A veterinarian may prescribe it for an individual patient, while accidental ingestion, an extra dose or repeated dosing needs an urgent call.

Reviewed:

Can I give it?

For dogs and cats: Dangerous Urgent help needed

For dogs and cats: Only as prescribed by a veterinarian

Conditions and risksAlready eaten — what now?Check the variant (3)
White tablets and a blister strip on a red background with dog and cat outlines: aspirin is dangerous for both species without veterinary direction

Already eaten — what now?

For dogs and cats

Urgent help needed

Call a veterinarian straight away, even if there are no signs yet. Report the species, weight, tablet name and strength, possible amount, time, medical conditions and other medicines. Keep the package. Do not induce vomiting or give activated charcoal, food, milk or another medicine unless instructed. Leave for an open clinic immediately for breathing difficulty, seizures, collapse, blood in vomit or black stool.

Check the variant

Variants and ingredients

Veterinarian-prescribed useFor dogs and cats: With restrictionsFor dogs and cats: Only as prescribed by a veterinarian

An individual plan with the exact formulation, dose, interval and monitoring.

For dogs and cats

Conditions and restrictions

Give only the prescribed formulation at the exact dose and interval. Do not double a missed dose, change the frequency or add another pain reliever. The veterinarian may recommend tests and monitoring before and during treatment.

Benefits

In selected cases, a veterinarian may use aspirin as an anti-inflammatory or antiplatelet medicine. The decision depends on the diagnosis, other medicines and organ function.

Already eaten — what now?

If the exact prescribed dose was given, continue according to the veterinarian’s plan. Stop the medicine and call promptly for vomiting, diarrhoea, loss of appetite, lethargy, abdominal pain, black stool, unusual breathing or jaundice. Treat an extra or early dose as an overdose and call immediately.

For dogs

Risks
  • Irritation, ulceration, perforation and bleeding in the stomach or intestines.
  • Kidney or liver injury, especially with dehydration, underlying illness, overdose or a drug interaction.
  • Severe poisoning may cause rapid or deep breathing, high temperature, acid-base disturbance, weakness, poor coordination, seizures and coma.

For cats

Risks
  • Irritation, ulceration, perforation and bleeding in the stomach or intestines.
  • Kidney or liver injury, especially with dehydration, underlying illness, overdose or a drug interaction.
  • Severe poisoning may cause rapid or deep breathing, high temperature, acid-base disturbance, weakness, poor coordination, seizures and coma.
  • Cats clear salicylate more slowly than dogs, so an incorrect interval and repeated doses can lead to accumulation.

Accidental or unsupervised doseFor dogs and cats: Dangerous · Urgent help needed

Any unplanned tablet, including low-dose and enteric-coated products.

For dogs and cats

Conditions and restrictions

This variant covers any unplanned tablet: standard, low-dose, buffered or enteric-coated. Do not wait for signs or judge the risk from the word “baby”.

Benefits

Accidental ingestion offers no benefit.

Already eaten — what now?

Call a veterinarian straight away, even if there are no signs yet. Report the species, weight, tablet name and strength, possible amount, time, medical conditions and other medicines. Keep the package. Do not induce vomiting or give activated charcoal, food, milk or another medicine unless instructed. Leave for an open clinic immediately for breathing difficulty, seizures, collapse, blood in vomit or black stool.

For dogs

Risks
  • Irritation, ulceration, perforation and bleeding in the stomach or intestines.
  • Kidney or liver injury, especially with dehydration, underlying illness, overdose or a drug interaction.
  • Severe poisoning may cause rapid or deep breathing, high temperature, acid-base disturbance, weakness, poor coordination, seizures and coma.

For cats

Risks
  • Irritation, ulceration, perforation and bleeding in the stomach or intestines.
  • Kidney or liver injury, especially with dehydration, underlying illness, overdose or a drug interaction.
  • Severe poisoning may cause rapid or deep breathing, high temperature, acid-base disturbance, weakness, poor coordination, seizures and coma.
  • Cats clear salicylate more slowly than dogs, so an incorrect interval and repeated doses can lead to accumulation.

Repeated doses, unknown amount or symptomsFor dogs and cats: Dangerous · Especially dangerous

A high-risk situation involving accumulation or developing poisoning.

For dogs and cats

Conditions and restrictions

This group covers an unknown amount, several tablets, repeated doses, an extra prescribed dose or any symptoms. Risk is also higher with kidney or liver disease, dehydration, or concurrent use of another NSAID or corticosteroid.

Benefits

Accidental ingestion offers no benefit.

Already eaten — what now?

Call a veterinarian immediately and prepare to travel to an open clinic. Take the package and medicine list. Do not wait for vomiting or black stool: absorption from an enteric-coated product may be unpredictable, and organ injury can appear later. Do not treat at home or induce vomiting without direct veterinary instruction.

For dogs

Risks
  • Irritation, ulceration, perforation and bleeding in the stomach or intestines.
  • Kidney or liver injury, especially with dehydration, underlying illness, overdose or a drug interaction.
  • Severe poisoning may cause rapid or deep breathing, high temperature, acid-base disturbance, weakness, poor coordination, seizures and coma.

For cats

Risks
  • Irritation, ulceration, perforation and bleeding in the stomach or intestines.
  • Kidney or liver injury, especially with dehydration, underlying illness, overdose or a drug interaction.
  • Severe poisoning may cause rapid or deep breathing, high temperature, acid-base disturbance, weakness, poor coordination, seizures and coma.
  • Cats clear salicylate more slowly than dogs, so an incorrect interval and repeated doses can lead to accumulation.

Conditions and risks

For dogs and cats

Conditions and restrictions

Do not give it without direct veterinary instruction. If it is prescribed, use only the stated formulation, dose, interval and duration. Do not combine aspirin with another NSAID or a corticosteroid, and do not substitute a human tablet for the prescribed product without checking first.

Benefits

Unsupervised use offers no justified benefit. A veterinarian may choose aspirin for an individual patient when the expected benefit outweighs the risk and treatment can be monitored.

For dogs

Risks

  • Irritation, ulceration, perforation and bleeding in the stomach or intestines.
  • Kidney or liver injury, especially with dehydration, underlying illness, overdose or a drug interaction.
  • Severe poisoning may cause rapid or deep breathing, high temperature, acid-base disturbance, weakness, poor coordination, seizures and coma.

For cats

Risks

  • Irritation, ulceration, perforation and bleeding in the stomach or intestines.
  • Kidney or liver injury, especially with dehydration, underlying illness, overdose or a drug interaction.
  • Severe poisoning may cause rapid or deep breathing, high temperature, acid-base disturbance, weakness, poor coordination, seizures and coma.
  • Cats clear salicylate more slowly than dogs, so an incorrect interval and repeated doses can lead to accumulation.

This card covers acetylsalicylic acid, or aspirin, in standard and enteric-coated tablets. Other salicylates and combination medicines may carry additional risks. After an accidental ingestion, photograph both sides of the package and tell the veterinarian every active ingredient.

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