Monthly Heartworm Prevention and Deworming for Dogs

Product Description

Iverhart Max Chew for dogs weighing 12.1 to 25 pounds is a once-a-month prescription chew designed to protect against heartworm disease and treat common intestinal worms. It contains ivermectin, pyrantel pamoate, and praziquantel, giving your dog protection against heartworms, roundworms, hookworms, and tapeworms in a single, easy-to-give dose. Authorized for dogs 8 weeks of age and older, it provides broad parasite coverage with simple, reliable monthly use.

Please note product may arrive in a Hardy Paw Pharmacy vial, manufacturer packaging is shown for reference.

Benefits

• Heartworm Prevention: Eliminates tissue stage heartworm larvae for 30 days after infection in dogs.
• Broad Deworming Coverage: Treats and controls roundworms, hookworms, and tapeworms commonly found in dogs.
• Monthly Dosing: Administered once every 30 days for consistent parasite protection year-round.
• Palatable Chew: Most dogs voluntarily consume the chew within minutes during field studies.
• Weight Specific Strength: Precisely formulated for dogs weighing 12.1 to 25 pounds.

Variants

Available in four weight-specific strengths for accurate monthly dosing in dogs:

• 0 to 12 lbs
• 12.1 to 25 lbs
• 25.1 to 50 lbs
• 50.1 to 100 lbs

Ingredients

Composition Table

How to Use

Recommended-Dosage Chart

Dosage & Administration Instructions

• Monthly Dosing: Administer one chew orally every 30 days for continuous heartworm and intestinal parasite protection.
• Mosquito Season Timing: Give the first dose within 30 days of initial mosquito exposure and continue through the season.
• Complete Consumption: Ensure the dog consumes the entire chew and observe briefly after administration.
• Redosing Guidance: If any portion of the dose is lost or rejected, administer another full dose.
• Heartworm Testing: Test dogs before starting and six months after switching preventatives.
• Prescription Required: Use only under the direction of a licensed veterinarian as required by federal law.

Disclaimer: This dosage information is provided by the manufacturer. Always consult your veterinarian before administering or adjusting any supplement for your pet.

Additional Information

Precautions

• Pre-Treatment Testing: Test all dogs for existing heartworm infection before initiating the prevention program.
• Not Adulticidal: Not effective against adult heartworms, and infected dogs require appropriate treatment beforehand.
• Use With Caution: Use carefully in dogs that are sick, weak, underweight, or weigh less than 10 pounds.
• Pregnancy Safety Unknown: The safety of this product has not been established for pregnant or nursing dogs.
• Collie Sensitivity: Some Collies may be more sensitive to higher levels of ivermectin.

Possible Side Effects

• Digestive Upset: Some dogs may vomit or have diarrhea, usually within the first 24 hours after the dose.
• Lethargy Signs: A few dogs have shown temporary tiredness, limpness, or lower energy levels.
• Excess Salivation: Increased drooling has been observed in some cases after the chew is given.
• Neurologic Reactions: Rarely, dogs may show signs such as unsteady movement, tremors, stumbling, or dilated pupils.
• Hypersensitivity Response: Dogs that have circulating microfilariae may experience mild diarrhea.

Storage Information

• Room Temperature Storage: Store at 20°C to 25°C for optimal product stability.
• Temperature Excursions: Short excursions permitted between 15°C and 30°C.
• Protect From Light: Keep chews in original packaging and protect from light exposure.
• Child Safety: Keep out of reach of children and other pets.

Shipping & Return

We offer ground, express, priority, and international delivery; see our shipping policy for details.

For return instructions or product concerns, please refer to our detailed refund policy.

Prescription items are NON-RETURNABLE and NON-REFUNDABLE.

Frequently Asked Questions

Q1: What parasites does Iverhart Max Chew protect dogs against?

Ans: Iverhart Max Chew helps protect dogs from heartworm disease by killing the early tissue stage of Dirofilaria immitis larvae. In addition to heartworm prevention, it treats and controls several common intestinal parasites. With monthly use, it provides protection against roundworms such as Toxocara canis and Toxascaris leonina, hookworms including Ancylostoma species and Uncinaria stenocephala, and tapeworms like Dipylidium caninum and Taenia pisiformis.

Q2: How often should I give Iverhart Max Chew to my dog?

Ans: Iverhart Max Chew should be administered orally once every 30 days. The first dose must be given within 30 days of initial mosquito exposure, and monthly dosing should continue throughout the mosquito season to maintain consistent heartworm prevention and intestinal parasite control.

Q3: Can Iverhart Max Chew treat existing adult heartworms?

Ans: No, Iverhart Max Chew is not effective against adult heartworms. Dogs must be tested for existing heartworm infection before starting treatment, and infected dogs should receive appropriate adulticide therapy prior to beginning a heartworm prevention program.

Q4: Is Iverhart Max Chew safe for all dog breeds?

Ans: Iverhart Max Chew is approved for dogs 8 weeks and older when used at the recommended dose. Certain Collies may show sensitivity to elevated ivermectin doses, but safety studies support use at labeled doses. Use caution in sick, underweight, or small dogs.

Q5: Does Iverhart Max Chew require a prescription?

Ans: Yes, Iverhart Max Chew requires a prescription. By federal law, it can only be used by a licensed veterinarian or with their approval. Pet owners need authorization from their veterinarian before buying or giving this medication to their dog.