Heartgard (ivermectin) Chewables for Cats Rx

  • Usually ships within one business day with veterinary approval.

  • Requires veterinary authorization.

  • Your pet's veterinarian will provide directions for use.

Heartgard Chewables for Cats (ivermectin)

Heartgard is a prescription heartworm disease preventative for cats that contains ivermectin, a de-wormer. It works to eliminate heartworm larvae, as well as control adult and immature stage hookworms Heartgard is designed to prevent heartworm infection in cats for a period of 30 days, and is commonly given once a month. Heartgard comes in a flavored chew that can be given whole or added with food. 

  • Consult with your veterinarian before administering this product, and follow their specific directions for us.
  • Read and follow the prescription label carefully for storage information, possible side effects, and drug interactions.
  • Give the exact amount prescribed and only as often as directed.
  • Do not skip doses or stop giving the medication without consulting your veterinarian.

Heartgard is sold as a prescription drug in a maximum of a 12 month supply per cat per year. To buy the same size for more than one cat, add what you need to the cart. You can split the amount to different cats in checkout.

Most veterinarians require and the American Heartworm Society recommends an annual heartworm test before prescribing Heartgard heartworm preventive for your pet. Talk with your pet's veterinarian for more information and to find the best flea and tick preventative to complement Heartgard Plus.