Heartgard Plus is a monthly chewable that prevents heartworm disease and treats and controls roundworms and hookworms in a single dose. Made by Boehringer Ingelheim, it combines ivermectin and pyrantel pamoate, sized to your dog's weight.
| Pack | Dog Weight | Strength (per chew) |
|---|---|---|
| Blue | Up to 25 lbs (11 kg) | 68 mcg ivermectin / 57 mg pyrantel |
| Green | 26–50 lbs (12–22 kg) | 136 mcg ivermectin / 114 mg pyrantel |
| Brown | 51–100 lbs (23–45 kg) | 272 mcg ivermectin / 227 mg pyrantel |
Always dose to your dog's current body weight.
Ivermectin prevents heartworm larvae from maturing into adult worms, while pyrantel pamoate paralyzes and expels roundworms and hookworms from the intestine. Give one chew monthly, year-round, for continuous heartworm prevention.
Heartgard Plus is available over the counter through Smartway Pet Supplies — no prescription or vet authorization needed at checkout. Customers are responsible for ensuring their order complies with import rules in their destination country.
Suitable for puppies from 6 weeks of age. Side effects are uncommon but may include mild digestive upset. Dogs should be tested for existing heartworm infection before starting a preventative program — consult your vet if you're unsure of your dog's heartworm status.
Orders ship directly from Australia to the US and Canada, with free standard shipping on qualifying orders over $99.
Does Heartgard Plus protect against fleas or ticks?
No — Heartgard Plus is formulated for heartworm, roundworm, and hookworm control only. If you also need flea and tick coverage, consider NexGard or Simparica Trio alongside it.
What happens if my dog has an undetected heartworm infection?
Giving a preventative to a dog already infected with adult heartworms can cause a serious reaction. Have your dog tested before starting Heartgard Plus if their heartworm status isn't current.
What if I miss a monthly dose?
Give the missed dose as soon as you remember, then resume your regular monthly schedule. Consistent, on-time dosing is what keeps heartworm prevention effective.
