Updated 08 April 2014

10 human medicines that could kill your pets

Pet looking a bit off? Whatever you do, don't raid your own medicine cabinet for a solution. Here's why.


You should never give a human drug to your pet animal unless your veterinarian advises you to do so.

Of course most drugs that are prescribed for animals by veterinarians are the same (or similar) drugs that physicians prescribe for human ailments - but there are huge differences in the way that different species of animal deal with a drug once it is their system. So, some drugs that are safe to use in humans are positively dangerous to give to pets and other animals.

A well-known example of this is aspirin, which if given at human dose rates, can easily cause toxicity in both dogs and cats because they cannot detoxify and eliminate it from their bodies as quickly as humans can. The result is a severe gastroenteritis - which may cause them to vomit blood.

There are literally hundreds of examples of human prescription drugs which can cause toxicity to dogs, cats or other pets. Other common medicines and so called social "drugs" which definitely should not be given by owners to their pets are:

  • Paracetamol
  • Ibuprofen
  • The laxative phenolphthalein
  • Iron supplements
  • Vitamin D supplements
  • Nebuliser medications prescribed for asthma
  • Drugs used to control "fits" e.g. phenytoin (toxic in cats)
  • Coffee and tea (due to the caffeine content)
  • Cannabis or any other illegal drug.

All of the above have been documented to cause serious illness - and are potentially fatal. The message is - never assume what is safe for you is safe for your pet - the chances are it isn't.

Source: Provet


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