Heartworm Prevention

Medications to help prevent heartworm.



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Heartworm Medicine and Prevention for Dogs

Heartworm disease in dogs is fatal if left untreated. Pets get the illness when a mosquito bites them and infects them with larvae. Since these insects are everywhere, veterinarian's recommend having a year-round prevention plan. By doing this you can protect your dog from heart failure, lung disease, and organ damage. Learn how the parasite life cycle works and the heartworm medicine for dogs that is available.

FAQs about Prescription Heartworm Medicine

Ordering prescription heartworm prevention for dogs is a simple process. Just add the item to your cart, fill in your pet and veterinarian’s information, and Petco will handle getting the prescription.

Finding the best heartworm preventative medication for your dog is a decision that is best made in partnership with your veterinarian. The right heartworm preventive medication for your dog depends on a lot of factors you can discuss with your veterinarian. The great news is there are a lot of options, which include injectable long-lasting preventative, chewable, topical application – and combinations that also prevent against internal parasites like roundworms and external parasites like fleas and ticks. Depending on the lifestyle and needs of you and your pet, you can select from many options. Breed is also taken into consideration when choosing the best heartworm therapy for your pet. Some breeds such as collies, may have an increased sensitivity to the active ingredient Ivermectin.

Yes, you need a prescription for heartworm preventative in the United States. Most Veterinarians require a recent negative heartworm test be on file before prescribing heartworm preventatives. Heartworm testing is performed annually to ensure your pet continues to be free from heartworms and it’s safe to continue to administer the heartworm medication prescribed by your veterinarian.

It's recommended that you keep your pet on year-round heartworm prevention treatment. Many heartworm preventative medications include preventatives for other worms your dog may contract as well, so year-round treatment is highly recommended.

It depends on the preventative you and your veterinarian have selected is best for your pet. Most oral or topical preventatives are given monthly and should be used year-round. The current injectable heartworm preventatives are administered by a veterinarian either every 6 or 12 months. Proper dosing and administration should be discussed with your veterinarian.

Petco carries prescription heartworm medication in chewable, tablet, and topical forms for your dog. Petco's full-service veterinary hospitals carry a wide range of heartworm preventatives as well. Please make sure you have a written prescription if you are ordering online.