With us well into the foal season, you should be aware of the best protocol for worming your new offspring. Foals are VERY succeptible to worm infestations and it is essential to deworm at the appropriate time.

Five reasons to use Panacur (fenbendazole) for worming foals:

  1. Documented efficacy against ascarids (Parascaris spp)1, 2
  2. Widespread resistance shown in ascarids to ivermectin and moxidectin, and some shown to pyrantel1
  3. A high safety margin 
  4. Metabolic action, so is a logical choice in heavy burdens to avoid obstruction3
  5. Paste, granules or liquid formulations to suit your requirements

Two single doses (7.5mg/kg) at 8-10 weeks of age and weaning are recommended for ascarid control in foals.


You must check for worms 4-6 weeks after the first worming dose of Panacur at 8-10 weeks of age by sending us a dung sample and dose your foal if appropriate, at the times shown in the graphic below. Panacur kills the common Ascarid worms, but the dung sample is to check for the less common Cyathostomin worms which need a different wormer to be effective, but no point using it if it is not necessary.

Remember, this is a protocol for foals only. After weaning they are treated as young horses.