Iverhart Max Chews, containing ivermectin, pyrantel pamoate and praziquantel. Is the only ivermectin-based, bacon flavored, chew indicated for the prevention of heartworm disease caused by Dirofilaria immitis 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).