Ask a VetCatsWorms· 1 min read

Cat deworming tablet: when and how often?

The short answer

Kitten deworming tablet: first at 2–3 weeks old, repeated through kittenhood.

Adult cat: timing depends on outdoor access, hunting, fleas. Vet sets dose by weight.

Cat deworming tablet: how often

  • Kitten: tablet every 2 weeks until 10 weeks old
  • Kitten from 10 weeks: tablet monthly till 6 months
  • Outdoor or hunting adult cat: tablet every month
  • Indoor-only adult cat: 1–2 times a year, or stool test

About cat deworming tablets

  • Kittens can pick up roundworms early, so tablets start young
  • Tablet dose goes by the cat's current weight
  • Ask your vet to write the cat's next tablet date

Cat deworming mistakes to avoid

  • Guessing your cat's dose from another cat's tablet
  • Dog flea products on your cat: some can be fatal
  • Deworming one cat, skipping other pets at home

When help can’t wait

See a vet today if

  • Worms in cat's vomit or potty; kitten with pot belly
  • Cat has repeated vomiting
  • Cat has not eaten for 24 hours
  • Kitten skips meals, seems quiet or weak

Go to a clinic now

Cat collapses or has a seizure. Repeated vomiting with weakness or yellow gums. Dog flea product touched your cat.

Not sure? Ask a vet.

Questions here are for non-urgent pet care.Prefer a video consultation?

This page is for general guidance and does not replace an examination by a vet.