A new Australian made allwormer paste for horses. It is unique in that abamectin is teamed with morantel tartrate. If you are experiencing resistance problems with other allwormers, give this a try. Active ingredients: Abamectin 4 mg/g, morantel tartrate 167 mg/g. Treatment and control of tapeworm, roundworm (including arterial larval stages of Strongylus vulgaris and benzimidazole resistant small strongyles), bots and skin lesions caused by Habronema and Draschia sp. (summer sores) and Onchocerca sp. microfilariae (cutaneous onchocerciasis). Abamectin acts by binding selectively and with high affinity to glutamate-gated chloride channels in invertebrate nerve and muscle cells. This leads to hyperpolarisation of these cells, resulting in flaccid paralysis and death of the parasite.