VetriShield Max Chewable Tablets (ivermectin/pyrantel pamoate/praziquantel) are indicated for use in dogs to prevent canine heartworm disease by eliminating the tissue stage of heartworm larvae (Dirolaria immitis) for a month (30 days) after infection and for the treatment and control of roundworms (Toxocara canis, Toxascaris leonina), hookworms (Ancylostoma caninum, Uncinaria stenocephala, Ancylostoma braziliense), and tapeworms (Dipylidium caninum, Taenia pisiformis). For use in dogs eight weeks of age and older.