Bimectin is indicated for the treatment of parasitic infestations in horses due to:

Strongylus vulgaris (adults and 4th larval [arterial] stages), S. edentatus (adults and 4th larval [tissue] stages), S. equinus (adults)

Adults and immatures (fourth stage larvae) small strongyles or cyathostomes unless otherwise stated. Ivermectin is not effective against the encysted larval stages of the small strongyles

Triodontophorus spp. (adults); Triodontophorus brevicauda, Triodontophorus serratus.

Coronocyclus spp.; Coronocyclus coronatus, Coronocyclus labiatus, Coronocyclus labratus.

Cyathostomum spp.; Cyathostomum catinatum, Cyathostomum pateratum; Cylicocyclus spp.; Cylicocyclus ashworthi, Cylicocyclus elongatus, Cylicocyclus insigne, Cylicocyclus leptostomum, Cylicocyclus nassatus, Cylicocyclus radiatus.

Cylicostephanus spp.; Cylicostephanus asymetricus, Cylicostephanus bidentatus, Cylicostephanus calicatus, Cylicostephanus goldi, Cylicostephanus longibursatus, Cylicostephanus minutus.

Cylicodontophorus spp.; Cylicodontophorus bicornatus.

Gyalocephalus capitatus.

Parapoteriostomum spp.; Parapoteriostomum euproctus, Parapoteriostomum mettami.

Petrovinema spp.; Petrovinema poculatum.

Poteriostomum spp.; Poteriostomum imparidentatum.

Lungworms (adult and immatures)

Pinworms (adult and immatures)

Ascarids (adults and third & fourth stage larvae)

Hairworms (adults)

Large-mouth stomach worms (adults)

Neck threadworms (microfilariae)

Onchocerca spp.

Intestinal threadworms (adults)

Oral and gastric stages of Gasterophilus spp.