Panacur (fenbendazole) helps treat hookworms, roundworms, tapeworms, and whipworms in dogs.;It is used by veterinarians to treat other parasites as well.;It is available as 1Gm, 2Gm and 4Gm powder packets.;The usual dose for dogs is one packet, based on weight, given once a day for 3 consecutive days.;The medication can be mixed with a small amount of the animals usual food. Dry dog food may require slight moistening to allow for proper mixing.