ACTIVE INGREDIENT: Ivermectin. Each tablet contains: Valuheart Monthly Heartworm Tablets for Small Dogs - BLUE (up to 10kg / up to 22lbs): Ivermectin 60ìg (micrograms) Valuheart Monthly Heartworm Tablets for Medium Dogs - GREEN (11-20kg / 23-44lbs): Ivermectin - 120ìg (micrograms) Valuheart Monthly Heartworm Tablets for Large Dogs - GOLD (21-40kg / 45-88lbs): Ivermectin - 240ìg (micrograms) DESCRIPTION: Valuheart Monthly Heartworm Tablets prevent heartworm disease in dogs by eliminating the tissue stage of heartworm larvae (Dirofilaria immitis) that infected the dog in the month (30 days) before treatment. PACK SIZE: Dogs up to 10kg (up to 22lbs) / Small Dogs - Blue: 6 tablets Dogs 11-20kg (23-44lbs) / Medium Dogs - Green: 6 tablets Dogs 21-40kg (45-88lbs) / Large Dogs - Gold: 6 tablets DOSAGE: 6ìg per kg (6ìg per 2.2lbs) bodyweight once a month. Give 1 (one) tablet containing the amount of ivermectin appropriate to the dog's weight as follows: Small Dogs up to 10kg (up to 22lbs): 60ìg Medium Dogs 11 to 20kg (23-44lbs): 120ìg Large Dogs 21 to 40kg (45-88lbs): 240ìg (For dogs over 40kg bodyweight, another ½ tablet can be given for each additional 20kg of bodyweight.) DIRECTIONS FOR USE: The proper dose should be given at monthly intervals (stickers are enclosed with each packet that can be used on your calendar/diary as a reminder of when to give the tablet). The tablets may be offered by hand or added to the food. The tablet may be wrapped in food to encourage consumption. The dog should be closely observed for several minutes following administration to ensure that the entire dose has been consumed. If it is suspected that any of the dose has been lost, re-dosing is recommended.