PHARMAQ Ivermectin Drops 0.8% Dosage and administration See dosage guide below. Apply the appropriate dose (one drop per 500g body weight) on the back of the neck, between the shoulder blades, once per week for three weeks. SPECIES BODYWEIGHT AMOUNT TO USE Pigeons 500g 1 drop Large birds, e.g. parrot 500g 1 drop Small mammal (e.g. rat) 500g 1 drop Guinea Pigs & Ferrets 1kg 2 drops Small rabbits 1 kg 2 drops Medium rabbits 2kg 4 drops Large rabbits Over 2kg 6 drops