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Dog Heartgard Chewables

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Starts $47.43 $32.29 
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Product Info
How to Use
Ingredients
Customer Reviews
Q&A
Product Info
What is Dog Heartgard Chewables?

Heartgard Chewables are a flavored treatment for dogs given once a month to prevent heartworms. Heartgard Chewables require a prescription from your veterinarian.

Looking to also control and treat roundworms and hookworms? Use Heartgard Plus Chewables.

For:

Dogs (6 weeks of age or older and no weight requirement)

Benefits:
  • Highly effective in preventing heartworms
  • A convenient and tasty chewable for easy administration
  • Mess-free Smart Shield applicator simplifies application
  • Delicious beef flavor that most dogs will eat
How It Works:

Heartgard prevents heartworm disease by eliminating the tissue stage of heartworm larvae for a month after infection.

Studies have indicated that certain dogs of the herding breeds are more sensitive to the effects of ivermectin administered at elevated dose levels due to the MDR1 gene. For a full list of dog breeds that may be affected, click here.

Cautions:

Can cause sensitivities in herding dog breeds. It is important that you give your pet this preventative every month. If you miss more than two monthly doses, we recommend calling your vet before continuing the medication. Also, note that side effects are rare at the recommended heartworm prevention dose. Higher doses in dogs may cause tremors, dilated pupils, loss of body weight, and death. Side effects in cats include agitation, loss of appetite, staggering, dilated pupils, tremors, blindness and disorientation.

Brand Name:

Heartgard Chewable (Merial)

Generic Name:

Ivermectin

What is the most important information I should know about Heartgard Chewables:

Heartgard Chewable is a prescription medication available for dogs as beef flavored chewable tablets. The usual dose of Heartgard Chewable for dogs up to 25 pounds is 68mcg (blue box), for dogs 26-50 pounds is 136mcg (green box) and for dogs 51-100 pounds is 272mcg (brown box). The chewable tablets must be chewed and should not be swallowed whole. For dogs that normally swallow whole, the chewable tablets can be broken into pieces.

What is Heartgard Chewables:

Heartgard chewable is given once a month for the prevention of heartworm disease in dogs. It is recommended by the American Heartworm Society that heartworm prevention be used year round. Heartgard may also be used for purposes other than those listed in this guide.

What should I discuss with my veterinarian before giving Heartgard to my pet:

Tell your veterinarian if your pet has ever had an allergic reaction to Heartgard, ivermectin, or to beef.

How should this medication be given:

Give Heartgard exactly as directed by the veterinarian. If you do not understand the directions ask the pharmacist or veterinarian to explain them to you. Heartgard chewable tablets must be chewed. They should not be swallowed whole. Use with caution, Collies and other herding dog breeds have been known to have adverse reactions to ivermectin administered at elevated dose levels. Heartworm testing should be performed prior to the start of prevention therapy. If the animal is off Heartgard Chewables for 6 months or less, start the medication and test after 6 months since microfilaria, that take 6 months to mature, will result in a positive test result. Store Heartgard chewable at room temperature. Do not remove the chew from its wrapper until ready to give the medicine. Keep this medication away from children and pets. In addition, Dog Heartgard Chewables has shown a wide margin of safety at the recommended dose level in dogs including pregnant or breeding bitches, stud dogs and puppies aged 6 or more weeks.

What happens if I miss giving a dose:

Give the missed dose as soon as you remember. Do not give a double dose of the medication.

What happens if I overdose the pet:

Seek emergency veterinary medical treatment. Symptoms of overdose may include vomiting, diarrhea and lack of coordination in dogs.

What should I avoid while giving Heartgard to my pet:

To help with compliance and not missing a monthly dose, use the handy red heart reminder stickers included with the medication.

What are the possible side effects of Heartgard:

Side effects of Heartgard are rare at the recommended heartworm prevention dose. Higher doses in dogs may cause tremors, dilated pupils, and loss of body weight and death.

What other drugs will affect Heartgard:

Do not give Heartgard to your pet if already taking another heartworm medication.

Where can I get more information:

Your pharmacist has additional information about Heartgard written for health professionals that you may read.

How to Use

Dog Heartgard Chewables Directions:

  • Dog Heartgard Chewables are a once-a-month chewable tablet available by prescription for the prevention of heartworm disease in dogs.
  • It is recommended by the American Heartworm Society that heartworm prevention be given year-round.
Tip:

Do not remove the chew from its wrapper until ready to give. Dog Heartgard Chewables must be chewed. They should not be swallowed whole. For dogs that normally swallow whole, the chewable tablet can be broken into pieces. Do not give a double dose of the medication.

Dog Heartgard Chewables Dosage for Dogs:

Dogs:
WeightDosage
Dogs Up to 25 lbsGive 1 chewable tablet (68mcg-blue box) once a month
26-50 lbsGive 1 chewable tablet (136mcg-green box) once a month
51-100 lbsGive 1 chewable tablet (272mcg-brown box) once a month
Over 100 lbsGive the appropriate combination of chewable tablets once a month
Dog Heartgard Chewables Dosage for Cats
Cats
Do not use!
Dog Heartgard Chewables Dosage for Horses
Horses
Do not use!
Storage:

Store this product at room temperature. Keep out of reach of children.

Ingredients

Dog Heartgard Chewables Ingredients:

Heartgard Blue Chewables (for Dogs 1-25 lbs):
Active Ingredient (per tablet)Amount
Ivermectin68 mcg
Heartgard Green Chewables (for Dogs 26-50 lbs):
Active Ingredient (per tablet)Amount
Ivermectin136 mcg
Heartgard Brown Chewables (for Dogs 51-100 lbs):
Active Ingredient (per tablet)Amount
Ivermectin272 mcg
Customer Reviews
Dog Heartgard Chewables is rated 4.8 out of 5 by 103.
Rated 5 out of 5 by from Heartgard Chews Love the fact that Penny gobbles this up every month. My vet had her on pills that were hard for me to get her to swallow. Yes, they were cheaper, but I love the convenience of these chews. Well worth the extra money.
Date published: 2017-12-18
Rated 5 out of 5 by from Would not go a month without it! Thanks PetMeds! I love the price, and how much you guys really care about us and our sweet baby dog.
Date published: 2017-12-15
Rated 5 out of 5 by from Dog approved My dog was not eating his other Heart Worm prevention tablets, but this he chewed right up like a treat
Date published: 2017-09-27
Rated 5 out of 5 by from Dog Heartgard I have been using Heartgard for years on all my dogs and none have ever had heart worms. I use it on my small dogs as well as my very large dogs and highly recommend it to anyone with pets who want to be sure their pets are protected at all times.
Date published: 2017-09-21
Rated 5 out of 5 by from Great Product I have been using Heartgard since Bella was 6months old & she is a little over 2years old now. She has always tested negative for Heart-worms & give all the credit to Heartgard.
Date published: 2017-09-16
Rated 5 out of 5 by from Awesome Results; Price and Shipping Time The Heartguard that I purchase from 1-800-PETMEDS has always been so effective, with dates that aren't expired and quality product.
Date published: 2017-06-24
Rated 5 out of 5 by from Heartgard is great! Heartgard is the ONLY type of heartworm preventive my dogs will readily take. The other types that are hard pill types my dogs won't take and would always spit them right out. I have used Heartgard on every dog we've ever had and we've never had any problems with this brand and more importantly, our dogs have never had heartworms! Our only problem is the veterinarians in our city do not offer Heartgard and only have other brands of heartworm preventive which are the pill types so this is the only way we can get this brand and have to send in a written prescription in order to get this for our dogs. I don't know why the vets in our area apparently don't prefer this brand of heartworm protection. This does concern us!!
Date published: 2017-06-06
Rated 5 out of 5 by from Slow-kill for heart worms. We had a German Shepherd wander onto our property about a year ago who was starving and showed clear signs of abuse. He was petrified of everything and would melt into the floor with any movement or sound, loud or not. After working with him for a few months, we were finally able to get a vet to check him out. Unfortunately, he tested positive for heart worms. He was too unhealthy to use the fast-kill method of injections, (but I would never put an animal through that horrible treatment anyway), so my vet suggested the slow-kill method of a very specific antibiotic, steroids and Heartgard (brand only). You do that for one month, then just use the Heartgard once per month, like usual. He was a strong Stage 3 out of four a year ago and now he's a weak positive (Stage 1). Vet said this could take several years, which is better for the dog - especially if they aren't healthy to begin with. The worms die off slowly, naturally, so the dog's system doesn't have a bunch of worms dying off at once and clogging up the lungs, causing the dog to die. My vet said only the Heartgard brand will work for this and so far I am very pleased. That stray dog has now become part of our pack; we love him! He is the sweetest boy I've ever known. He is so incredibly loving and so very gentle - I just can't imagine anyone wanting to hurt him. He learns quickly and is eager to please. And, (sounding like a commercial), thanks to Heartgard, he has a much better chance at a long and happy life.
Date published: 2017-03-19
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Q&A

Is this safe for dogs with food allergies?

Asked by: Crystal
Thank you for your question. Per Merial the product does contain real beef ground , corn cob , citric acid , soy protein, etc. So if your pet is allergic to any of the above we recommend discussing an alternate heartworm preventive with your veterinarian.
Answered by: Crystal PetMed Pro
Date published: 2017-11-22

My dog weighs 25.6 lbs. which dosage

Asked by: Lucky
Thank you for your question. If you have a growing puppy there is a chance your growing furry friend will need the 26-50lbs dose. If you have an adult dog and weight fluctuates but does not exceed 25.6 the correct dose would be 1-25lbs. The dose will be determined by your veterinarian.
Answered by: Crystal PetMed Pro
Date published: 2017-11-24

Do you have to have a prescription for heartworm meds from the vet?

Asked by: Sharon
Thank you for your question. Heartgard Chewables require a prescription from your veterinarian.
Answered by: leanniejo
Date published: 2017-12-29

My 11lb morkie had her heartguard this AM but the sitter did not feed her. Without food she commonly vomits a little yellow bile and did so with the heart guard. Some may have been ingested but I don't know if it should be repeated whole, in part or not. 

Asked by: Tedley
Thank you for your question. It is possible to give what is remaining. For example, if she spit up half a tablet, you can give half a tablet. However, when "eyeballing" it, gives a possibility of overdosing. Seek emergency veterinary medical treatment if so. Symptoms of overdose may include vomiting, diarrhea and lack of coordination in dogs. Best advice would be to consult your vet for the best option.
Answered by: leanniejo
Date published: 2017-08-08

How old should they start taking the medication

Asked by: Cindy
They should be at least 6 weeks or older.
Answered by: Megan Student Pharmacist
Date published: 2017-07-30

The weight of the dog. Makes a difference?

Asked by: JOANNE
Hello Joanne, Yes, the weight of the dug makes a difference because it determines how much active ingredient is in the medication. Hope this helps!
Answered by: Nemi Pharmacy Intern
Date published: 2017-07-30

I am looking for an unflavored heartworm product for my IBD dog.  Do you make such a thing?

Asked by: Jenuchee
You may want to look into Revolution and Advantage Multi. Both products are topical medications so they won't upset your dog's stomach and are excellent heartworm preventions.
Answered by: SuzyCVT
Date published: 2017-07-30

if my dog already has heartworms can I still give him the heartguard chewables

Asked by: silkie
Yes. It will kill the microfilaria (heartworm babies) so they don't turn into more adult heartworms. My dog had such a bad infestation, vets wouldn't treat and recommended surgical removal. That was five years ago, and my Little Rascal is still kicking, after only love and heartguard.
Answered by: Jonathan
Date published: 2017-07-30
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