Heartworm Preventives

The American Heartworm Society recommends year-round administration of medications approved by the US Food and Drug Administration (FDA) to prevent heartworm infection in dogs, cats and ferrets. Currently available preventives are listed below; as new products become available, updates will be posted at heartwormsociety.org. Consult the appropriate manufacturer for minimum age/weight, use during breeding/lactation, or other health requirements for product usage.

Scroll down for feline and ferret preventives.

The American Heartworm Society recommends year-round administration of medications approved by the US Food and Drug Administration (FDA) to prevent heartworm infection. Currently available preventives are listed below; as new products become available, updates will be posted at heartwormsociety.org. Consult the appropriate manufacturer for minimum age/weight, use during breeding/lactation, or other health requirements for product usage.

 Scroll down for feline and ferret preventives.

a - Ancylostoma caninum, Uncinaria stenocephala, A. braziliense); b - Ascarids (Toxocara canis, Toxascaris leonina); c - Adult Ancylostoma caninum; d - Trichuris vulpis; e- Toxocara cati; f - Taenia pisiformis, Echinococcus multilocularis, E. granulosus, Dipylidium caninum; g - Adult & immature hookworms (Ancylostoma tubaeforme, A. braziliense); h - D. caninum, T. pisiformis; i - Adult Ancylostoma tubaeforme; j - Prevents development of flea eggs; does not kill adult fleas; k - Prevention and control of flea populations (Ctenocephalides felis); l - Treatment of flea infestations (C. felis and C. canis); m - Treatment of tick infestations, with immediate & persistent tick killing activity for 5 weeks against Ixodes hexagonus, I. ricinus, Rhipicephalus sanguineus & for 4 weeks against Dermacentor reticulatus; n - A. caninum L4 larvae, immature adults (L5) and adults; U. stenocephala adults; o - Kills adult fleas; prevention & treatment of flea infestations (C. felis); p - Larval and adult A. caninum & U. stenocephala; q - Adult, immature adult, & fourth-stage larvae (L4) of A. caninum and U. stenocephala; r - Adult T. leonina & adult & L4 of T. canis; s - Sarcoptes scabiei var. canis; t - Adult, immature adult, & L4 of A. tubaeforme; u - Adult, immature adult, & L4 of T. cati; v - Otodectes cynotis; w - Control of tick infestations due to I. scapularis, D. variabilis; x - Adult and L4 A. tubaeforme, adult A. braziliense; y - Adult and L4 T. cati; z - Adult D. caninum, E. multilocularis; 1 - Kills adult fleas & prevents flea eggs from hatching for 1 month; prevention & control of C. felis infestation; 2 - Control of tick infestations due to D. variabilis; 3 - Control of tick infestations due to I. scapularis, A. maculatum, D. variabilis; 4 - Adult D. caninum and E. multilocularis.</p</p</p</p</p