Brand Names:
Panacur, Safe-guard AquaSol


Drug Type: Antiprotozoal, Anthelmintic

Fenbendazole (Panacur)


Fenbendazole (Panacur) is an antiparasitic drug used for control of ascarids, gapeworm, flukes, capillaria, and some microfilaria. Despite being widely used as a dewormer in many species, toxicity has been reported, particularly in birds.

Caution. Fenbendazole shouldn t be given to birds actively growing new feathers, such as those in the early stages of growth or during molting.
Fenbendazole comes available as an oral suspension. It can be given orally via feed, drinking water, or syringe, depending on the form and concentration.
Follow instructions by manufacturer over what is provided below.
  • Waterfowl: 5-15 mg/kg, given Given orally once a day for 5 days.
  • Chickens: 15-20 mg/kg given orally once a day for 3 days is needed to treat Ascaridia galli, Heterakis gallinarum, Syngamus trachea, and Railletina spp. For Ascaridia galli and Heterakis gallinarum, only 1 mg/kg BW (0.454 mg/lb) is needed for 5 consecutive days.