Iverhart Max Chew for Dogs, 50.1-100 lbs, (Brown Box), 6 Chews (6-mos. supply)
By Iverhart Max

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About This Item
For use in animals only. Your furry friend must have a current heartworm test result on file with your veterinarian in order to be prescribed heartworm medication. Please visit your veterinarian to have this test performed annually to protect your four-legged friend. Help protect your pet from pesky pests with Iverhart Max Chews. These soft chews are formulated to help prevent heartworm disease and can also help treat and control the other three most common worms—roundworms, hookworms and tapeworms. This broad-spectrum medication helps to provide safe and effective year-round protection when given monthly and is intended for dogs 8 weeks or older weighing 50.1 to 100 pounds. To top it all off, it has a drool-worthy bacon flavor that your dog will love.
Proudly sourced directly from the manufacturer or their approved distributor. Guaranteed genuine and backed by the manufacturer.
Specifications
Item Number | 154864 |
---|---|
Common Brand Name(s) | Iverhart Max |
For Use With | Dogs |
Generic Name | Ivermectin, Pyrantel Pamoate, Praziquantel |
Administration Form | Oral |
Breed Size | Giant Breeds |
Product Form | Chew |
Strength | 272 mcg Ivermectin, 228 mg Pyrantel Pamoate and 228 mg Praziquantel |
Health Condition | Tapeworms, Roundworms, Heartworms, Hookworms |
Drug Type | Parasiticide |
Uses
Used to prevent heartworm disease by eliminating the tissue stage of heartworm larvae for a month (30 days) after infection and for the treatment and control of roundworms, hookworms, and tapeworms.
Possible Side Effects
Please contact your veterinarian if the following adverse reactions occur: depression/lethargy, vomiting, anorexia, diarrhea, mydriasis, ataxia, staggering, convulsions, and hypersalivation.
Drug & Food Interactions
Talk to your veterinarian about any other drugs your pet is taking before starting this medication.
Precautions
All pets should be tested for existing heartworm infection before starting treatment, which is not effective against adult heartworm. Infected pets must be treated to remove adult heartworms and microfilariae before initiating a program with this medication. While some microfilariae may be killed, this medication is not effective for microfilariae clearance. Keep this and all drugs out of the reach of children. In case of ingestion, contact your physician immediately. Physicians may contact a Poison Control Center. Keep this and all drugs out of the reach of children.
Ingredients
272 mcg Ivermectin, 228 mg Pyrantel Pamoate and 228 mg Praziquantel.
Recommended Dosage
Consult your veterinarian for proper dosing instructions.
Storage Instructions
Store at controlled room temperature of 68° - 77°F. Protect product from light.
What is the recommended age for Iverhart Max Chew?
Puppies and dogs 8 weeks of age and older.
Is Iverhart Max Chew labeled for use in pregnant dogs?
No. The safe use of this product has not been evaluated in pregnant or lactating dogs.
Does a dog need to chew Iverhart Max Chew?
No. The chew can be offered by hand or added, intact, to a small amount of dog food. Care should be taken to ensure that the dog consumes the complete dose.
What if a dog vomits soon after giving Iverhart Max Chew or if the owner is not sure the entire dose was consumed?
Per the label, “if it is suspected that any of the dose has been lost, redosing is recommended.”
Is Iverhart Max Chew labeled for whipworms?
No. The labeled indications for this product includes certain species of hookworms, roundworms and tapeworms.
Does Iverhart Max Chew contain any beef?
No, Iverhart Max Chew contains hydrolyzed poultry liver as part of the bacon flavor palatability enticer. There are no beef or pork proteins in the product, only poultry.
Are there any additional animal proteins other than the hydrolyzed poultry liver in the Iverhart Max Chew?
No, there are no other animal proteins.
Are there any grains present in Iverhart Max Chew?
No whole grains are used in the production of Iverhart Max Chew. The sucrose, corn starch, croscarmellose sodium and magnesium stearate are all plant based. Corn oil and soybean oil are also present in the chews.
Can Iverhart Max Chew be promoted as hypoallergenic in dogs allergic to chicken as it contains hydrolyzed poultry liver?
No, while the poultry protein in this product is hydrolyzed, there is no information or studies to show whether it may or may not trigger an allergic reaction in patients that are allergic to chicken. There is no information as to the molecular weight ranges for the poultry protein in Iverhart Max Chew.
Are the active ingredients in Iverhart Max Chew evenly distributed throughout the chew?
Yes, the active ingredients are evenly distributed throughout the chew. By necessity to pass quality tests for release, ingredients must be evenly dispersed throughout each batch and, therefore, each chew. It is off label use to split the chew and is not recommended.
What is the shelf-life for Iverhart Max Chew?
The shelf-life for Iverhart Max Chew is 30 months from the date of manufacture.
Can Iverhart Max Chew be used in cats?
No. Iverhart Max Chew is indicated for use in dogs only according to label directions.

Dosage Chart
Color on Box | Weight Range | Strength | Dosage | Product Page |
---|---|---|---|---|
Purple | 6-12 lbs | 34 mcg Ivermectin, 28.5 mg Pyrantel Pamoate & 28.5 mg Praziquantel | Administer orally once a month | ✓-Click Here |
Blue | 12.1-25 lbs | 68 mcg Ivermectin, 57 mg Pyrantel Pamoate & 57 mg Praziquantel | Administer orally once a month | ✓-Click Here |
Green | 25.1-50 lbs | 136 mcg Ivermectin, 114 mg Pyrantel Pamoate & 114 mg Praziquantel | Administer orally once a month | ✓-Click Here |
Brown | 50.1-100 lbs | 272 mcg Ivermectin, 228 mg Pyrantel Pamoate & 228 mg Praziquantel | Administer orally once a month | ✓-Click Here |
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ReviewsWrite a Review
29 Customer Reviews
Very Easy To work with Vet.
Everyone at Chewy is pleasant. And they took care of everything.
Slather some pb on and good to go!
We have never had a problem with this pill; it is larger but we just put a little peanut butter on it, and our dog usually eats it like a treat or in her dish with her food. This is our second year using it.
The taste must be terrible
Our dog isn't too picky and usually it doesn't take much effort to give him any medicine. The pill is huge and our dog wouldn't even touch it once he smelled it. When you try to cut it, it crumbles, so we had to chop it into a fine powder and mix it in a TON of canned cheese or tuna on a spoon. Even with doing this, he makes a face like it tastes bad and refuses to take it all at once. It's almost stressful to give him the pill every month. So glad we're done the box and moving onto a different brand of heartworm medication.
Just used first time
I just gave my labrador this so can't say much about it. But yes they are big but I broke into 3 pieces easily with no problem. Can't believe all the negativity on here about the soft chew. If it does what it's designed for isn't that worth the little effort to give your best friend.
misinformation
The box states this is a soft chew. Unfortunately they are extremely hard. I have to chop into little bits for my dog to take it. Great product if your dog doesn't mind like mine does.
Great service and product!
I used to get heart guard meds elsewhere but, after having such good service with pet food, I’m getting these at Chewey too.
Excellent Choice
Liam was our rescue with heartworms. Our vet got him cleared and he has been on Iverhart Max since 2016 and has done really well. Chewy has an excellent price for our large Border Collie!
Dog Refuses to Eat
It gets harder every time to give it to my ~90 pound German Shepard. I currently have to grind it up to powder and mix it with a large quantity of braunschweiger. I have tried most other foods and methods. I wish they would produce it in a regular pill form that potentially could be concealed easier in food!
My dog won't eat these!
My chow hound, who will usually eat anything, reuses to eat this chewable. He'll roll it around in his mouth then spit it on the floor. I broke it up and mixed it with his dry food and some turkey gravy, and he refused the entire meal. Can't wait til next month! Will probably need to buy something else, an unneeded expense in these trying financial times.
Kahleesi's mom
I had her on another med for heartworms but she would not eat them but she loves these. Kahleesi is a 65lb pit lab Mix and has no trouble chewing or swallowing these and I really dont understand why everyone is complaining about their huge dog not being able to swallow these, sometimes I think people forget that dogs are supposed to be allowed to chew on bones and in the wild that's just what they do. And they wonder why some dog have teeth problems. Really People come on give me a break. She has had no problem with positive test since being on this medication but I do know they can test positive but after second more inclusive test its negative, this happened to me on the last kind of heartworm med she was on. I usually get it from my vet so I have not had a problem with dry hard pills but if the are at the end of expiration date maybe that why they are hard but still not reason why your dog cant chew it and swallow. If you are giving this to a dog that is under 50 lbs then you are buying the wrong size, but if you have a lab or Doberman you should not have a problem chewing them up and swallowing them if you cut them up for your dog it's because you treat your dog too much like a human and allowed them to forget their natural ability to chew. My girl is spoiled she even sleep in my bed but she also is giving bones to keep her teeth sharp and clean and to remind her she was once a wild creature, I have never seen her more excited that when she laying on the floor chewing on one of her huge cow leg bones that are smoked i get from my butcher, and yes I have taken her to the vet with them and the vet says they are very good for her because she can not break little pieces of them off and swallow them and poke her stomach and intestines. This is the kid of things dog are supposed to do but people want to dress them up and paint their nails and stupid stuff like that and because of these things they forget the are dogs.