We have a great range of puppy wormers. Worming puppies is recommended from two weeks of age, it is good practice to worm the bitch at the same time as you worm her puppies. Worming should be repeated at 5, 8 and 12 weeks of age after this the puppies should be wormed every three months. Worming liquids such as Panacur Puppy or Drontal Puppy wormer are convenient but not suitable for dogs under 1lb bodyweight. Pregnant bitches should be wormed with panacur from day 40 of pregnancy to 2 days post whelping.