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At a Glance
Monthly medication that treats heartworm disease
Removes whipworm, roundworm, and hookworm
Artificial beef flavor makes it more appetizing
This product requires a prescription.


Milbemycin Oxime

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Pet Size
Don't know your pet's weight?
If you can't get them on the scale, try this super simple method:

1) Weigh yourself.
2) Weigh yourself holding your pet.
3)Subtract the two numbers to get their weight.

Too heavy to hold? Your vet will weigh them if you ask (or may already have it on file if you call).
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  • 2

    Add to Cart

    Just like any other online store. Make sure the quantity matches what's been prescribed by your veterinarian.

  • 3

    Tell us about your pet and vet

    Answer some questions during checkout and we'll contact your vet and verify the prescription for you. (you can also mail us the written prescription)

  • 4

    That's It!

    If the prescription has any refills, processing your future orders for that medication can be expedited.

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    K9 Advantix II for Dogs
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Rated 5 out of 5 by 145 reviewers.
Rated 5 out of 5by Good ProductOur vet recommended using interceptor and we have not regretted it. 09/11/2018
Rated 5 out of 5by Works GreatWorks great and my dog eats them no problem. 08/20/2018
Rated 5 out of 5by Review of Interceptor Heartworm medicineWe like the convenience of using Interceptor for our dog, and there is not any trouble to get her to eat the flavored tablet. We like ordering the product for PetCareRX because it is so fast and convenient. 04/27/2018
Rated 4 out of 5by Heart guard is cheaper Quote from vet office, "heart guard is the same product and does the same thing but is cheaper." 06/29/2016
Rated 5 out of 5by Safe for trouble makers! Our lab (now 6 months old) is a very picky eater and does not take this willingly, it needs to be cut in thirds and mixed with her dinner. However, while we are gone and she was left free to roam, she devoured 6 tablets at 5 months old and 35 pounds. No vomiting or diarrhea, no symptoms were seen, and the vet said she would be fine. Though inconvenient on the wallet, it's reassuring to know that if the tablets are accidentally left accessible, she will be okay! 06/03/2016
Rated 4 out of 5by its greatthey make a great product . its really great. a great great product . i give it 4 Trumps. 05/22/2016
Rated 5 out of 5by Interceptor for DogsI ordered two Interceptor for Dogs to use on my two dogs. It is very easy to apply to the back and from present and past use has been very effective - no external parasite problems. 05/12/2016
Rated 5 out of 5by Safe for my dogIn certain breeds, a mutation occurs in the MDR1 gene that causes sensitivity to Ivermectin, Loperamide, and a number of other drugs. My dog is half Collie and tested positive for this mutant gene. A safe heartworm product to use if your dog has the MDR1 gene. 05/03/2016
Rated 5 out of 5by Love this stuffSoooo glad that this product is back on the market. My dog and I were having difficulties with the other similar products. This product is very affordable and works well. Love that it works for whip worms, as well as all the others. 04/06/2016
Rated 5 out of 5by vet recommendedWe went to our vet recently & he said that if we could use this product it would prevent worms that some of the other products would not. Have used this before & will now keep our dogs on it. 11/25/2015
Rated 5 out of 5by So glad it's backI am so glad that Interceptor is back on the market. It works great and costs less than the others. I had trouble getting my dog to take the other chewable preventatives. I had to cover it with peanut butter to get her to take it. This, she just takes right out of my hand like it's a treat. 10/19/2015
Rated 5 out of 5by Whipworm remedyI was a little concerned that my dog would be OK on Interceptor because she's been on a different heart worm med for years now and because when she was a puppy she had heart worm. The reason for the switch was because Abby had/has whip worms and her vet thought it would be better for her to be on Interceptor year-round because whip worms are hard to get rid of. She seems to do well on the meds, but the true test will come after her 2 month appointment in early August. I'm optimistic. 07/20/2015
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