Cydectin 0.1% Oral Drench for Sheep Dosage and administration Dosage 1 ml per 5 kg liveweight to give 0.2 mg moxidectin/kg liveweight. Administration Administer as an oral drench using the Cydectin drench gun or any standard drenching equipment. Check dose rates and equipment before drenching commences. Do not exceed stated dose.