SENERGY Heartworm Medicine for Dogs | Petco

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Where can I get affordable generic heartworm medicine for my dog?
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 September 24th, 2025
Health & Wellness
Do I need a prescription to get more heartworm medicine for my dog?
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 PetCoach!
Updated on September 24th, 2025
Health & Wellness
Can I get a heartworm prevention prescription online or at a vet?
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 September 24th, 2025
Health & Wellness
New Lab puppy needs heartworm/flea meds. Can I get them without a vet?
Hi and thanks for posting on Petco Pet Education Center, formerly Petcoach! 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 September 24th, 2025
Health & Wellness
Can I get affordable heartworm medication over-the-counter or online?
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 September 24th, 2025