Strongid C 2X Equine Anthelmintic deworming makes a difference you can see! These equine vaccines keep parasite levels under control to help your horse perform at his best. Parasites steal nutrition, energy and good health from your horse. Left unchecked, parasites can cause damage to vital organs, impair growth and performance, and may cause colic. A daily dose of Strongid C 2X equine vaccines help break the cycle of parasite infection. Strongid C 2X helps prevent Strongylus vulgaris larval infestations and control adult large strongyles as well as adult and fourth-stage larvae (L4) of small strongyles, pinworms and ascarids.