Qualimintic Pour-on for Cattle Dosage and administration The recommended dose is 500 micrograms ivermectin per kg bodyweight. This corresponds to 1 ml per 10 kg bodyweight. Bodyweight (kg) Dose volume (ml) 100 10 150 15 200 20 250 25 300 30 Over 300 kg bodyweight, give 1 ml per 10 kg bodyweight. Administration and Duration of Treatment A single, topical (pour-on) administration. The solution should be applied along the mid-line of the back in a narrow strip between the wither and tailhead.