Heartgard and Heartgard Plus are both monthly, beef-flavored chewables for dogs (6+ weeks) that prevent heartworm disease using ivermectin. The primary difference is that Heartgard Plus adds pyrantel pamoate to treat and control hookworms and roundworms, whereas original Heartgard only protects against heartworms.

What's the difference between regular Heartgard and Heartgard Plus?

The main difference between Heartgard and Heartgard Plus is the spectrum of protection: Heartgard prevents heartworm disease only (using Ivermectin), while Heartgard Plus offers broader protection, preventing heartworm and also treating/controlling roundworms and hookworms, thanks to the addition of Pyrantel Pamoate. Both are monthly chewables, safe for dogs 6 weeks and older, but Heartgard Plus provides a wider internal parasite defense, often recommended for comprehensive parasite control, say PetCareRx and Lambert Vet Supplies.
 

What are the different types of Heartgard?

What Does Heartgard Protect Against? Heartgard and Heartgard Plus both protect dogs against heartworm infestation. Heartgard protects against heartworms alone. Heartgard Plus protects against heartworms, hookworms, roundworms, and other ascarids (types of intestinal parasites).

What dogs should not take Heartgard Plus?

Heartgard Plus should not be given to dogs that have tested positive for heartworm disease. Veterinarians require dogs to have a negative heartworm test before prescribing them Heartgard Plus. There are two reasons for this: Heartgard Plus cannot kill adult heartworms, so your dog will need additional treatment.

Which is better, Heartgard Plus or NexGard Plus?

NexGard (afoxolaner) chews protect against fleas and ticks, and prevents Lyme infections as a direct result of killing black-legged ticks. HEARTGARD Plus prevents heartworm disease, and treats and controls hookworms and roundworms. Consider combining both products to protect dogs from most common parasitic threats.

Cesar Millan talks Heartgard Plus to safeguard dogs

Does my dog need both Heartgard and NexGard?

NexGard (afoxolaner) chews protect against fleas and ticks, and prevents Lyme infections as a direct result of killing black-legged ticks. HEARTGARD Plus prevents heartworm disease, and treats and controls hookworms and roundworms. Consider combining both products to protect dogs from most common parasitic threats.

What is the safest heartworm medicine for dogs?

The safest heartworm prevention for dogs involves FDA-approved medications like Heartgard Plus, Interceptor Plus, and Revolution, with the best choice depending on your dog's specific needs, age, and health; Heartgard (ivermectin) is often cited as very safe, even for sensitive breeds like Collies at recommended doses, while Interceptor (milbemycin) is also a good, safer alternative, and Revolution (selamectin) is another gentle option, but always consult your vet to avoid issues with specific sensitivities (like ivermectin in some collies) and to ensure year-round protection. 

What is the controversy with Heartgard?

The Heartgard controversy centers on allegations that its maker, Merial, falsely advertised the drug as 100% effective, despite internal knowledge and FDA warnings (circa 2009) that its efficacy was closer to 95%, especially as heartworm resistance emerged; lawsuits claimed this deception led to dogs contracting heartworms, causing severe illness, while a whistleblower suit alleged cover-ups and improper data handling by Merial, though the company maintained product safety.
 

How long can a dog go without heartworm pills?

You can generally go about 15 days past the due date before an infection becomes likely, but you should give a missed monthly dose immediately if it's less than two weeks late; if it's been over two weeks, contact your vet, as you might need a heartworm test in about six months to be sure, because heartworm larvae take months to mature. Missing doses leaves your dog vulnerable because preventatives only last a short time in the body, so consistent monthly (or year-round) dosing is crucial. 

What is the best all-in-one dog preventative?

Our Vet Pick: Best All-in-One (Heartworm, Flea, and Tick) Simparica Trio Chewable Tablet for Dogs is our vets' pick for the best flea, tick, and heartworm prevention for dogs.

Is Heartgard really necessary for dogs?

The American Heartworm Society recommends giving your dog year-round protection. That's because the threat of heartworm disease doesn't stop with dropping temperatures.

What does HEARTGARD Plus not cover?

Heartgard plus ingredients include Ivermectin and Pyrantel Pamoate. The Heartgard Plus Ivermectin Pyrantel tablets offer protection against heartworms, roundworms, and hookworms. Unfortunately, Heartgard Plus doesn't offer protection against tapeworms.

What is the most effective flea and tick prevention for dogs?

Popular, vet-recommended flea and tick medicines for dogs include chewables Simparica and Credelio, plus Bravecto topical, all of which are prescription medicines. Your vet can help you choose the best flea and tick medication for your individual dog based on their specific needs.

What kills heartworms in dogs naturally at home?

Anecdotal evidence suggests that herbs such as garlic, black walnut and wormwood, and the homeopathic heartworm nosode, may actually prevent as well as treat infection. Unfortunately, I have not yet been able to find substantive proof that these therapies can reliably and safely prevent or treat infection or disease.

What dogs are more prone to heartworm?

The infection risk is greatest in dogs that are housed outdoors. Any dog, whether it is an indoor or an outdoor pet, is capable of being infected; all it takes is a bite from a mosquito carrying the infective heartworm larvae. Most infections are diagnosed in medium- to large-sized dogs that are 3–8 years old.

What time of year is heartworm most common?

In most parts of the country, exposure risk is greatest during the warm months of summer and early fall.

Why shouldn't you give your dog heartworm medicine?

Heartworm preventives do not kill adult heartworms. Also, giving a heartworm preventive to a dog infected with adult heartworms may be harmful or deadly. If microfilariae are in the dog's bloodstream, the preventive may cause the microfilariae to suddenly die, triggering a shock-like reaction and possibly death.

What states are worst for heartworms?

North America can carry heartworms. WHERE THE WORMS ARE WORST. The TOP 5 states are: Mississippi, Louisiana, South Carolina, Arkansas, and Alabama.

Is Heartgard toxic to dogs?

HEARTGARD demonstrated no signs of toxicity at 10 times the recommended dose (60 mcg/kg) in sensitive Collies. Results of these trials and bioequivalency studies, support the safety of HEARTGARD products in dogs, including Collies, when used as recommended.

Does Tractor Supply have heartworm medicine for dogs?

Yes, Tractor Supply sells a wide variety of heartworm prevention medicines for dogs through their online pet pharmacy, including popular brands like Heartgard, NexGard, Simparica Trio, and Interceptor, available as chews or topicals, often with prescription approval needed for some, and they offer home delivery. You can find products that cover heartworm plus flea, tick, and other intestinal parasites all in one.

What are natural heartworm prevention methods?

Certainly, drug-free strategies can help reduce the risk of heartworm transmission to a dog or cat. Because heartworms are spread by mosquitoes, keeping pets indoors overnight and avoiding walks at dusk or dawn when mosquitoes may be feeding can help prevent exposure to mosquitoes that could be carrying heartworms.

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