Sentinel Heartworm | Petco

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Vet Q & A
My dog is at the weight limit for flea/heartworm meds. What dose?
Sentinel has no tick coverage and does not kill fleas. It only sterilizes the eggs. I always go up a size to be safe as most dogs gain weight but rarely lose weight. It has a good safety margin so using the 25-50 pounds medicine would be best. You will continue to need the Simparica or nexgard with this
Updated on September 24th, 2025
Vet Q & A
What OTC flea treatment is safe for my diabetic dog on Sentinel?
Over the counter flea products that are fine to use with sentinel include frontline plus, advantage and Advantix. Just be sure to not bathe your dog a couple days before or after applying any of those products as that can affect how effective they are.
Updated on September 24th, 2025
Vet Q & A
What flea, tick, and heartworm prevention for my 50lb Lab puppy?
There are several medicines to choose from, but you will need a current heartworm test and a prescription from your vet for the medicines. You can look into Heartgard or Sentinel for monthly heartworm prevention or Proheart 6 is a 6 month injection for heartworm prevention but you will need a separate product such as Nexgard or Bravecto for flea and tick control
Updated on September 24th, 2025
Vet Q & A
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
Vet Q & A
What are the best prescription flea and tick chews for my dogs?
The easiest way to do so is to go to your veterinarian and either buy the chews from him or get a prescription from your vet and get them over the internet. I am assuming you are looking to buy either Bravecto, Simparica or Nexgard. These are prescription only.
Updated on September 24th, 2025