LONGRANGE ® (eprinomectin) is a ready-to-use, sterile injectable preparation containing eprinomectin, a member of the macrocyclic lactone class of antiparasitics that delivers up to 150 days of parasite control in a single dose. The Theraphase™ technology used to develop this formulation of eprinomectin allows a single treatment to last up to 100-150 days, long enough to break the parasite life cycle and effectively reduce parasite burdens on the pasture. LongRange ® is effective in the control of most internal and external parasites of cattle: gastrointestinal roundworms, lungworms, grubs, mites.