Sheepguard SE Oral drench for sheep with Selenium is a moxidectin (second generation macrocyclic lactone) endectocide which is effective against internal and external parasites sensitive to this family, including the following parasites of sheep. It also aids in the control of selenium responsive conditions. For the treatment and control of moxidectin-sensitive gastrointestinal parasites (including benzimidazole and/or levamisole resistant strains), lungworm and itchmite of sheep.