What dosage of Itch Wormer for Cats should I use?

The dosage is based on your cat's body-weight. 

Here are the guidelines:

1.0 - 2.0 kg = ½ worming tablet

Greater than 2.0 up to 4.0 kg = 1 worming tablet

Greater than 4.0 up to 6.0 kg = 1 ½ worming tablets

Greater than 6.0 kg = 2 worming tablets