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Tri-Heart Plus

Heartworm preventative that also controls roundworms & hookworms

Species: Dog
Prescription required
FREE shipping over $49
Ships Free!

Tri-Heart Plus

Heartworm preventative that also controls roundworms & hookworms

Species: Dog
Prescription required
FREE shipping over $49
Ships Free!
Product images:

Product description

Tri-Heart Plus is a once-a-month treatment for dogs.

Active ingredients

Each Tri-Heart Plus chewable tablet contains:

Name Ivermectin Content (mcg) Pyrantel (mg)
Tri-Heart Plus Chewable Tablets for Dogs up to 25 Pounds 68 57
Tri-Heart Plus Chewable Tablets for Dogs from 26 to 50 Pounds 136 114
Tri-Heart Plus Chewable Tablets for Dogs from 51 to 100 Pounds 272 227

Indications for use

Tri-Heart Plus is indicated for use in dogs to prevent canine heartworm disease by eliminating the tissue stage of heartworm larvae (Dirofilaria immitis) for a month (30 days) after infection and for the treatment and control of ascarids (Toxocara canis, Toxascaris leonina) and hookworms (Ancylostoma caninum, Uncinaria stenocephala, Ancylostoma braziliense).

Administration and dosage

  • Tri-Heart Plus chewable tablets should be administered orally at monthly intervals at the recommended minimum dose level of 6 mcg of ivermectin per kilogram(2.72 mcg/lb) and 5 mg of pyrantel (as pamoate salt) per kg (2.27 mg/lb) of body weight.

  • The recommended dosing schedule for prevention of canine heartworm disease and for the treatment and control of ascarids and hookworms is as follows:

Dog Weight Chewable Tablets per month
Up to 25 lbs 1
26 to 50 lbs 1
51 to 100 lbs 1
  • Tri-Heart Plus chewable tablets are recommended for dogs 6 weeks of age and older. For dogs over 100 lbs, use the appropriate combination of these tablets.

  • Administration:

    • Remove only one chewable tablet at a time from the blister card.
    • Because most dogs find Tri-Heart Plus chewable tablets palatable, the product can be offered to the dog by hand.
    • Alternatively, it may be added intact to a small amount of dry food or placed in the back of the dog’s mouth for forced swallowing.

Prescribing information

picture_as_pdf Tri-Heart Plus
Manufactured by Merck . Shop all Tri-Heart products