Heartgard is the top selling canine heartworm preventative for your pet. Veterinarian recommended and and dog approved, Heartgard provides reliable and secure protection against heartworms in dogs. Heartgard kills tissue larval stages of heartworms and helps prevent them from developing into adults and causing heartworm disease. Keep your relationship with your dog safe, strong, and long with Heartgard at your service. Use new Heartgard coupon codes for discounts and save even more when you buy the preventative medication that could save your dog’s life!