Liquid Wormer 2X is not only used to prevent reinfestation of Toxocara canis in puppies and adult dogs and in lactating bitches after whelping, but also for the removal of large roundworms, (Toxocara canis and Toxascaris leonina) and hookworms, (Ancylostoma caninum and Uncinaria stenocephala) in dogs and puppies.SHAKE WELL BEFORE USE. Administer one full teaspoonful (5 mL) for each 10 lbs. of body weight. To assure proper dosage, weigh animal prior to treatment. It is not necessary to withhold food prior to or after treatment. Refer to product insert (on back) for complete directions.