Equimax is quite different from all other horse dewormers. It contains 1.87% Ivermectin and 14.03% Praziquantel. A product that treats tapeworms and is safe for foals as young as 4 weeks old. Designed to be used against Tapeworms, Lungworms (adults and fourth-stage larvae), Large-mouth Stomach Worms (adults), Large Strongyles (adults),