Heartgard vs. Heartgard Plus

Comparison between Heartgard and Heartgard Plus

Heartgard Plus and Heartgard are both easy to use and protect your dogs from heartworm. These chewable come in beef-flavored and need to administer monthly.

The key difference with the new Heartgard Plus is that it has an extra active ingredient, pyrantel which controls and treats hookworm and roundworm.

You should get your dog tested for heartworm before starting other heartworm preventatives; if the dog is positive, it needs to be treated first before they start preventative.

Heartgard and Heartgard Plus are safe for puppies and dogs from the age of six weeks, and no minimum weight is required. In addition, these products are safe for nursing and pregnant dogs.

If the pet gets heartworm, it can be tough to treat, so prevention is better than cure. Here is our comparison of the leading brand of heartworm preventatives.

Heartgard For Dogs
Heartgard Plus For Dogs
Prevents Heartworm
Prevents Roundworms
Prevents Hookworms
Prevents Whipworms
Other Parasites
Safe for Pregnant or Nursing Pets
When does it starts working
Begins working Immediately
Begins working Immediately
Beef-flavored chewable
Beef-flavored chewable
Active Ingredient(s)
Ivermectin, Pyrantel, Pamoate



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