Drug Facts Active ingredients (in each dosage unit): Fenbendazole Granules 22.2% (222 mg/g) Purpose: Dewormer for Dogs Only Uses: For the treatment and control of Roundworms (Toxocara canis, Toxascaris leonina), Hookworms (Ancylostoma caninum, Uncinaria stenocephala), Whipworms (Trichuris vulpis), and Tapeworms (Taenia pisiformis). Human Warning: Keep this and all medication out of the reach of children. Adverse Reactions: In US clinical studies 3 of 240 dogs (about 1% of the treated dogs) had vomiting associated with use of the product. When using this product: Panacur® C is safe for use in puppies 6 weeks or older and adult dogs, including pregnant bitches. Do not deworm a dog or puppy that is sick. Consult your veterinarian for diagnosis of the illness.