Overview HeartgardĀ® Plus Chewables Canine monthly heartworm preventative that eliminates the tissue stage of heartworm larvae (dirofilaria immitis) for a month (30 days).

  • For the treatment and control of ascarids (toxocara canis, toxascaris leonina) and hookworms (ancylostoma caninum, uncinaria stenocephala, ancylostoma braziliense)
  • Contains ivermectin and pyrantel