Iverhart Max prevents heartworm disease by controlling and treating roundworms, hookworms, and tapeworms.

 These palatable chews can be administered monthly to dogs that have been prescribed the medication, that are at least 9 weeks of age, and that weigh more than 5 pounds. Monthly administration eliminates roundworms and prevents future infestation.

Iverhart Max is a dewormer that prevents heartworm disease at its source by removing the heartworms that might cause it. There are four formulations of Iverhart Max to optimize dosage based on your dog’s weight: one for dogs under 12, one for dogs 13-25 pounds, one for dogs 26-50 pounds, and one for dogs 51-100 pounds. Order today to fill your dog’s prescription and treat roundworms, tapeworms, and hookworms.

Key Features:
  • Treats and controls tapeworms, hookworms, roundworms, and heartworms
  • Palatable chew for easy administration
  • Prescription strength for dogs 6+ lbs and 9+ weeks of age
  • Iverhart Max for Dogs

    Prescription Required


    Iverhart Max prevents canine heartworm disease. It also treats and controls roundworms, hookworms, and tapeworms. Iverhart Max requires a prescription from your veterinarian.

    For: Dogs (over 8 weeks of age and weighing at least 6 pounds)

  • Tasty chewable tablets (pork liver cereal based with artificial beef)
  • Easy to administer
  • Given once a month

  • Ingredients:
    Iverhart Max– Magenta Box (Dogs 6-12 lbs):
    Active Ingredients (per chewable tablet) Amount
    Ivermectin 34 mcg
    Pyrantel Pamoate 28.5 mg
    Praziquantel 28.5 mg

    Iverhart Max– Blue Box (Dogs 12.1-25 lbs):
    Active Ingredients (per chewable tablet) Amount
    Ivermectin 68 mcg
    Pyrantel Pamoate 57 mg
    Praziquantel 57 mg

    Iverhart Max – Green Box (Dogs 25.1-50 lbs):
    Active Ingredients (per chewable tablet) Amount
    Ivermectin 136 mcg
    Pyrantel Pamoate 114 mg
    Praziquantel 114 mg

    Iverhart Max – Brown Box (Dogs 501-100 lbs):
    Active Ingredients (per chewable tablet) Amount
    Ivermectin 272 mcg
    Pyrantel Pamoate 228 mg
    Praziquantel 228 mg

  • Give Iverhart Max Flavored Chewables once a month on the same day of each month year round.
  • Iverhart Max Flavored Chewables can be given by hand, mixed intact with a small amount of food, or placed in the back of the dog’s mouth for forced swallowing.
  • Watch dog closely following dosing to be sure the entire dose has been swallowed. If it is not completely swallowed, give one more full recommended dose as soon as possible.
  • Tip: Do not remove chewable from its wrapper until ready to give to pet.

    Pet Weight Dosage
    Dogs/Puppies (8 weeks of age and older): 6 - 12 lbs Give 1 chewable every month (Magenta Box)
      12.1 - 25 lbs Give 1 chewable every month (Blue Box)
      25.1 – 50 lbs Give 1 chewable every month (Green Box)
      50.1-100 lbs Give 1 chewable every month (Brown Box)
      Over 100 lbs Give combination of chewables based on weight
    Cats: X X
    Horses: X X
    Storage: Should be stored at room temperature.

    How it works:
    Iverhart Max is an anthelminthic (dewormer). The ingredient pyrantel pamoate is used to treat and control roundworms and hookworms in dogs. Praziquantel is used for treating and controlling tapeworms.

    Side effects of Iverhart Max are rare, but may include lethargy, limpness, salivation, shaking, diarrhea, decreased appetite, licking lips, and belching. Do not give Iverhart Max to your pet if already giving a different heartworm medication.

    Prescription Required