Dogs and cats are extremely sensitive to human medications, such as nonsteroidal anti-inflammatory drugs (NSAID). Doctors have said that dogs especially tend to sniff and eat them, affecting their system in severe ways. 

Several over-the-counter pain medications for humans that are used to treat headaches, toothaches, muscle sprains and arthritis, such as Aleve (naproxen), Naproxen Sodium, Advil (ibuprofen), Aspirin (ASA), and Tylenol (acetaminophen) are extremely dangerous for your pets. Never leave a bottle of any of these lying around within reach of your pet.

If you suspect your pet is vomiting, lethargic, thirsty or urinating more than usual after having consumed any human medication, call the vet at once. The sooner your pet is in the hands of veterinarian care, the more likely their chances of recovering. 


Other medications, such as acetaminophen that is used to treat aches, pains, cold or fly is toxic to both pets but cats have been found to be more sensitive. This is because they lack the enzymes that are required to metabolize acetaminophen, leading to severe liver damage that stops the blood from flushing the cells with oxygen. You may also see the gums changing colour from pink to an unhealthy purple or find them turning lethargic. Get in touch with a vet at once if you notice these changes.

Topical Chemotherapy

5-Fluorouracil is a topical chemotherapy medication that is recommended for home-treatment for many cancerous lesions. It is easy for pets to sniff and lick the medication if they find it lying around. It is extremely toxic for both dogs and cats. They can develop seizures, vomit blood and get diarrhea. Large amounts of the medication in their system may result in affecting bone marrow production. It is extremely hard to flush it out of their system. Prevention is always easier than a cure.

  • Keep human medications out of the reach of animals at all times.
  • Make sure they are kept in closed cupboards out of their way.
  • Never leaves ointments and creams lying around without the caps on.
  • Pick up and dispose of pills that may have dropped to the floor.

Aquitaine Animal Hospital, Mississauga

We have been servicing the Meadowvale and surrounding Peel areas for over a decade. Bring your pet to us for the highest quality treatment. Our team of professionals are up to date with the advanced, state-of-the-art practices in dental care, grooming, minor and major surgical procedures, Microchipping and more. We also offer our radiology and ultrasound services in our in-house lab. Call us to book an appointment or for any emergency. Our emergency services are open 24 hours.