Cydectin 1% Injection for Cattle Dosage and administration Dosage 1 ml per 50 kg liveweight to give 0.2 mg moxidectin/kg liveweight. Determine cattle weight to ensure correct dose rate is used. Do not overdose. Because of a particular susceptibility, it is not recommended to treat calves less than 8 weeks of age. Administration Inject subcutaneously (under the skin) in front of or behind the shoulder. Sterile 16–18 Gauge (1.6–1.2 mm) needles of ½ inch (1.5 cm) length are recommended. For 50 ml packs use a sterile draw-off needle to avoid excessive broaching of the stopper. The use of multidose equipment with a vented draw-off assembly is recommended for 200 ml and 500 ml packaging. Clinical trials have shown that after injection no signs of pain were apparent.