Directions for Use
Heartgard is given once a month year round for the prevention of heartworm disease. The usual dose of Heartgard in for cats 1-5 pounds is 55mcg and 165 mcg for cats 6-15 pounds. The chewable tablets should be chewed. They are not meant to be swallowed whole. For cats that normally swallow treats whole, the tablet can be broken into pieces. Please follow your veterinarian's instructions exactly when using this medication.
This medication should not be used in animals allergic to it. Heartworm testing should be performed prior to the start of prevention therapy. If the animal is off Heartgard for 6 months or less, start the medication and test after 6 months since microfilaria, that take 6 months to mature, will result in a positive test result. Because humans can contract hookworm from animals, it is important to maintain good personal hygiene. It is also important to eliminate fleas on the pet and in the household and to not feed the pet rodents or uncooked meat or fish. To prevent reinfection, daily cleanup of stools is recommended.