Heartworms can have severe consequences on pet health if left unchecked and untreated. The good news is that heartworm disease is reasonably easy to prevent. We offer a variety of monthly heartworm medications and preventative products for both cats and dogs. Make sure you talk to your veterinarian about which option is best for your pet.
How prescriptions work
Eligible for free e-certification with purchase Heartgard Plus Chewables

Heartgard Plus Chewables

Starting at: $5.19

$5.77 Save: 10%

Prescription items are NON-RETURNABLE and NON REFUNDABLE HEARTGARD Plus Chewables for Canines HEARTGARD Plus for dogs is a beef-flavored soft chew administered once a month to protect your dog from the threat of potentially deadly heartworm disease, ...Read more »

Made in the USA
All styles are in stock.
Eligible for free e-certification with purchase Advantage Multi for Dogs

Advantage Multi for Dogs

Starting at: $111.48

$123.87 Save: 10%

Prescription items are NON-RETURNABLE and NON REFUNDABLE Advantage Multi(R) for Dogs Advantage Multi for Dogs is a once-a-month topical medication that prevents heartworm disease, treats circulating microfilaria in heartworm positive dogs, kills adul ...Read more »

Made in the USA
All styles are in stock.
Eligible for free e-certification with purchase Sentinel Flavor Tabs for Dogs

Sentinel Flavor Tabs for Dogs

Starting at: $7.69

$9.32 Save: 17%

Prescription items are NON-RETURNABLE and NON REFUNDABLE SENTINEL(R) Flavor Tabs(R) (milbemycin oxime/lufenuron) The palatable once-a-month prescription tablet that prevents heartworm disease and flea populations in dogs and puppies, SENTINEL(R) (mil ...Read more »

Made in the USA
All styles are in stock.
Eligible for free e-certification with purchase Sentinel Spectrum Chews

Sentinel Spectrum Chews

Starting at: $8.89

$9.88 Save: 10%

Prescription items are NON-RETURNABLE and NON REFUNDABLE Sentinel Spectrum Chewables Sentinel Spectrum is a once-a-month chewable tablet that contains a combination of milbeycin oxime, praziquantel, and lufenuron to prevent and control fleas, heartwo ...Read more »

Made in the USA
All styles are in stock.
Eligible for free e-certification with purchase Iverhart Plus Dog

Iverhart Plus Dog

Starting at: $4.69

$5.21 Save: 10%

Prescription items are NON-RETURNABLE and NON REFUNDABLE Iverhart Plus(R) Chewable Tablets Iverhart Plus prevents heartworm disease and also controls roundworms and hookworms in dogs in a once-a-month, liver-flavored chewable tablet. Dogs should be t ...Read more »

Made in the USA
All styles are in stock.
Eligible for free e-certification with purchase DIROBAN 5X50MG VIALS

DIROBAN 5X50MG VIALS

$304.99

$366.66 Save: 17%

Prescription items are NON-RETURNABLE and NON REFUNDABLE Diroban ™ Melarsomine dihydrochloride (the active ingredient in Diroban) is an organic arsenical chemotherapeutic agent. Melarsomine has a molecular weight of 501.34 and is chemically designate ...Read more »

Made in the USA
Out of stock
Eligible for free e-certification with purchase Milbeguard Tablet

Milbeguard Tablet

Starting at: $25.24

$28.04 Save: 10%

Prescription items are NON-RETURNABLE and NON REFUNDABLE MilbeGuard is a broad spectrum parasiticide that contains once-a-month flavored tablets to prevent heartworm disease, control adult hookworm infection, and remove and control adult roundworms a ...Read more »

All styles are in stock.
Eligible for free e-certification with purchase Simparica TRIO Chewable

Simparica TRIO Chewable

Starting at: $23.49

$26.10 Save: 10%

Prescription items are NON-RETURNABLE and NON REFUNDABLE Simparica Trio Chewable Simparica Trio makes it simple to deliver the protection every best friend deserves. Simparica Trio is the first monthly chewable to protect dogs against heartworm disea ...Read more »

Made in the USA
Some styles are in stock.
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