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Search Petco to find the benefits of both Interceptor and Heartgard worm medicines for dogs. We strive to help you keep your pup happy and healthy.
Updated on October 29th, 2025
Do you think your dog or cat has heart issues and high blood pressure? Visit Petco to learn how enalapril can help your pet.
Updated on October 29th, 2025
Search Petco for information on selamectin for pets of all kinds. We have all the details on how to prevent heartworms & parasites to keep your pet healthy.
Updated on October 29th, 2025
At Petco, learn more about the benefits & differences of Interceptor & Interceptor Plus dewormer for dogs with heartworm, roundworms, hookworms & tapeworms.
Updated on October 29th, 2025
Want to know if it is safe to give your dog or cat Pimobendan? Petco has the answers to this and other pet medication questions!
Updated on October 29th, 2025
Tri-Heart is generic Heartgard and is just as effective. I am not sure why your vet won't prescribe it for you. You cannot buy any heartworm prevention over the counter so you will need a prescription. I suggest you bring your dog to one of the VETCO vaccine clinics at your local Petco stores (see schedule below). Bring proof of his last negative heartworm test and they can give you a prescription for the Tri-Heart. There is no charge for the exam. Just the cost of the medication. Hope this helps! ( https://www.vetcoclinics.com/services-and-clinics/clinic-locations-and-schedules/?zip=77469 ) ( https://www.petco.com/shop/SearchDisplay?categoryId=&storeId=10151&catalogId=10051&langId=-1&sType=SimpleSearch&resultCatEntryType=2&showResultsPage=true&searchSource=Q&pageView=&beginIndex=0&pageSize=48&fromPageValue=search&searchTerm=triheart )
Updated on August 12th, 2025
Handsome boy! Yes, he will need a prescription. Contact your vet; a heart worm test may be required first. Here's some great info on heart worm prevention and why routine testing is recommended: https://d3ft8sckhnqim2.cloudfront.net/images/Think_12_PDFs/Think12Dog_Dos_and_Donts101316.pdf?1476362471 Thanks for asking Boop by Petco!
Updated on August 12th, 2025
You will need to go to a vet as it requires a negative heartworm test before it can be prescribed. This is a simple, fast blood-test that will let the vet know it is safe to start preventive medication. Why this is required is if your pet already has heartworms and is given the medication, it can kill the worms too quickly which can cause blockages of the blood vessels leading to potential stroke or death. Making sure your pet is negative first will ensure it is safe to administer.
Updated on August 12th, 2025
Hi and thanks for posting on Boop by Petco! The heartworm preventatives typically do require a prescription from your veterinarian which may require an exam initially if this is Annie's first time visiting her veterinarian. There are some over the counter flea preventatives such as Advantix and Advantage or Frontline. However, these may not work as well as prescription flea preventatives from a veterinarian. There are no over the counter heartworm preventatives- this does require a prescription with Annie's veterinarian. I hope this helps!
Updated on August 12th, 2025
Hi there. Unfortunately, there are no heartworm preventatives that are available over-the-counter - by definition, these are prescription products. But, you can certainly choose to order them through an online pharmacy like 1-800-PetMeds or Chewy.com if you like, as these may be less expensive than purchasing through your vet's office. Your veterinarian should be able to give you a prescription to have filled at any pharmacy you choose, as long as your pet has had an exam within the past year. :)
Updated on August 12th, 2025