Interceptor Plus should be administered orally, once every month, at the minimum dosage of 0.23 mg/lb (0.5 mg/kg) milbemycin oxime, and 2.28 mg/lb (5 mg/kg) praziquantel. For heartworm prevention, give once monthly for at least 6 months after exposure. Dogs weighing 2-8 lbs should be given one Interceptor Plus chewable tablet (Orange Box) monthly. Dogs weighing 8.1-25 lbs should be given one Interceptor Plus chewable tablet (Green Box) monthly. Dogs weighing 25.1-50 lbs should be given one Interceptor Plus chewable tablet (Yellow Box) monthly. Dogs weighing 50.1-100 lbs should be given one Interceptor Plus chewable tablet (Blue Box) monthly.