• HeartGard Plus Medium Dogs 12-22kg Green – front of pack
  • HeartGard Plus Chewables for Medium Dogs 26-50 lbs 12-22 kg - Green – back of pack
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HeartGard Plus Chewables for Medium Dogs 26–50 lbs (12–22 kg) – Green
$68.00 USD
$68.00 USD $68.00 USD
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  • ✔ Genuine branded product (sealed & in-date)
  • ✔ Ships from Australia with tracked delivery
  • ✔ No prescription required
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Size

Description

HeartGard Plus Chewables for Medium Dogs 26–50 lbs (12–22 kg) – Heartworm & Worm Prevention (Green)

HeartGard Plus Chewables for Medium Dogs deliver monthly heartworm prevention plus treatment for common intestinal worms in a soft, real beef chew most dogs eat like a treat. Specifically dosed for medium dogs weighing 26–50 lbs (12–22 kg), HeartGard Plus (Green) protects against heartworm disease and treats roundworm and hookworm with one chew, once a month.

What HeartGard Plus Protects Against

  • Heartworm: Prevents heartworm disease, transmitted by infected mosquitoes.
  • Roundworm: Treats and controls Toxocara canis and Toxascaris leonina infections.
  • Hookworm: Treats and controls Ancylostoma caninum and Uncinaria stenocephala infections.

Not covered: Fleas, ticks, tapeworm, or whipworm. For flea and tick protection, pair HeartGard Plus with NexGard, Bravecto, or a similar product.

Why Medium-Dog Owners Choose HeartGard Plus

  • #1 vet-recommended brand: The most-prescribed heartworm preventative in the US for decades. Reliable and well-studied.
  • Real beef chew: Made with real beef (not beef-flavored) — most dogs accept it like a treat without prompting.
  • Once-a-month dosing: Simple monthly routine, same date each month.
  • Intestinal worm coverage: Treats the two most common intestinal worms, so you don’t need a separate routine wormer.
  • Right size: The Green pack is dosed for dogs 26–50 lbs — covers most adult Beagles, Cocker Spaniels, Border Collies, and similar medium breeds.

How HeartGard Plus Works

HeartGard Plus combines two active ingredients:

  • Ivermectin targets immature heartworm larvae (microfilariae) before they can mature into adult heartworms — stopping the disease before it establishes.
  • Pyrantel pamoate paralyzes and clears adult roundworm and hookworm infections in the intestinal tract.

Who It’s For

  • Medium dogs weighing 26–50 lbs (12–22 kg)
  • Puppies and adult dogs 6 weeks of age and older
  • Healthy dogs — talk to your vet before use in Collies or other herding breeds (see safety note below)

How to Give HeartGard Plus

  1. Give one chew per month, on the same date each month, year-round.
  2. Offer directly as a treat — most dogs eagerly accept the real beef flavor.
  3. Make sure your dog chews and swallows the full chew.
  4. If your dog is starting heartworm prevention for the first time at 7 months or older, your vet may recommend a heartworm test first.

Safety & Side Effects

HeartGard Plus is well tolerated by most dogs. Mild, short-lived side effects can include vomiting, diarrhea, lethargy, or reduced appetite.

Important note for Collie / herding-breed owners: Some Collies, Australian Shepherds, Shetland Sheepdogs, Old English Sheepdogs, and related breeds carry the MDR1 gene mutation, which can make them sensitive to ivermectin at high doses. At the dose used in HeartGard Plus, the product is considered safe for these breeds — but if your dog has tested positive for MDR1, talk to your veterinarian before starting.

Product Details

  • Brand: HeartGard Plus (Boehringer Ingelheim)
  • For: Dogs
  • Weight range: 26–50 lbs (12–22 kg)
  • Pack color: Green
  • Form: Real-beef soft chew (oral)
  • Active ingredients: Ivermectin + Pyrantel pamoate
  • Minimum age: 6 weeks
  • Pack size: 6 chews (6 months of protection)
  • Coverage: Heartworm prevention + roundworm and hookworm treatment

Helpful Links

Fast shipping across the US & Canada — no prescription required. Use only as directed on the packaging. Information provided for general reference; speak with your veterinarian for medical advice specific to your dog.

 

Frequently asked questions

Is Green the right pack for my Beagle, Cocker Spaniel, or Border Collie?

Most adult Beagles, Cocker Spaniels, Border Collies, French Bulldogs, and similar medium breeds fall within the Green range (26–50 lbs). Weigh your dog to confirm — if they’re over 50 lbs, switch to the Brown pack.

Do I need a heartworm test before starting?

For puppies starting before 7 months of age, no test is typically needed. For older dogs being newly started on heartworm prevention, your vet may recommend a heartworm test first — standard veterinary practice across the US and Canada.

Does HeartGard Plus cover fleas, ticks, or tapeworm?

No — HeartGard Plus only prevents heartworm and treats roundworm and hookworm. For flea and tick prevention, pair it with NexGard, Bravecto, or another flea/tick product. For tapeworm, you’ll need a separate wormer (or a product like NexGard Spectra that includes tapeworm coverage).

How quickly does HeartGard Plus start working?

HeartGard Plus works by killing immature heartworm larvae that have infected your dog within the previous 30 days. Continuous monthly dosing maintains the protective cycle — that’s why year-round dosing matters.

Do I need a prescription to buy HeartGard Plus?

No — SmartWay Pet Supplies ships HeartGard Plus over the counter to customers across the US and Canada. No prescription or vet authorization required at checkout.

Should I dose year-round?

Yes — year-round dosing is the recommendation across the US and Canada. Mosquitoes that transmit heartworm are active for more of the year than people realize, and missed doses can leave dangerous gaps in protection. The American Heartworm Society recommends year-round dosing for all dogs.