Choosing a monthly parasite preventative can feel like a big call—especially when you want something simple you’ll actually stick with. In this Heartgard Plus review, we break down what it covers, what it doesn’t, what to watch for, and who it tends to suit in Australian conditions.
Important: This article is general information only. Always follow the product label directions and speak with your vet about the right parasite prevention plan for your dog, particularly for puppies, pregnant or breeding dogs, dogs with illness, or dogs on other medications.
If you’re comparing Heartgard Plus products, this guide will help you decide if the convenience and coverage match your dog’s needs and your routine.
What Heartgard Plus is (and what it’s for)
Heartgard Plus is a monthly chew for dogs designed to help prevent heartworm disease and treat/control certain common intestinal worms. The active ingredients are ivermectin and pyrantel.
In practical terms, it’s aimed at pet parents who want an easy, once-a-month routine that supports heartworm prevention while also covering key gut worms many dogs are exposed to through soil, parks, shared outdoor spaces, and day-to-day sniffing.
In Australia, heartworm prevention is often treated as a year-round job because mosquito activity can persist well beyond a neat “season”—especially in warm or humid areas and during long summers. Heartgard Plus can be a useful foundation within a broader parasite plan, rather than a single “covers-everything” product.
To explore the range in one place, you can view Heartgard Plus options available at Pacific Pet Supplies.
Coverage at a glance: what it does and doesn’t do
It’s easier to choose confidently when you’re clear on coverage boundaries. Here’s a simple summary of what Heartgard Plus is typically used for.
- Helps prevent: heartworm disease.
- Treats/controls: roundworm and hookworm.
- Does not cover: tapeworm.
- Does not cover: external parasites such as fleas or ticks.
If tapeworm or flea/tick management is part of your dog’s risk picture (for example, dogs that hunt or scavenge, visit high-traffic dog areas, or live in regions with heavy flea pressure), you’ll generally need a separate product plan recommended by your vet.
Key benefits for Australian pet owners
1) A straightforward monthly routine. Many owners like that it’s designed for monthly use, which fits neatly into common pet-care schedules (first of the month, payday, or a recurring phone reminder). Consistency matters in parasite prevention, and simple routines are easier to maintain.
2) Chew format can be less messy than topicals. For dogs that dislike topical applications—or for households that prefer to avoid wet residues during humid months—a chew can feel more manageable. For some pets, it’s easier to administer calmly, which helps long-term compliance.
3) Covers two common worm groups alongside heartworm prevention. Because Heartgard Plus includes pyrantel, it addresses roundworm and hookworm in addition to heartworm prevention. For many families, that combination supports a more complete internal parasite routine with one monthly step (while recognising it still doesn’t cover everything).
4) Practical for busy households and multi-dog routines. When you’re juggling work, school runs, and weekend commitments, a single, repeatable step can help you stay on track—particularly through warmer months when mosquitoes and outdoor activity tend to increase.
Quick tip: Set a recurring monthly reminder on your phone and keep the pack near your dog’s food container (out of reach) so it’s part of your regular routine.
Potential downsides and common deal-breakers
No parasite product is perfect for every pet. Here are common reasons some owners decide it’s not the right fit.
It isn’t an all-in-one parasite solution. Heartgard Plus doesn’t cover fleas or ticks, and it doesn’t cover tapeworm. If you’re hoping one product will handle everything, this is where expectations can misalign. Many Aussie pet parents use it as one piece of a broader plan rather than the whole plan.
Some dogs are picky about chews. Even “treat-like” products can be refused by fussy eaters or dogs with sensitive stomachs. If your dog regularly turns down flavoured chews, you may prefer a different format so you’re not battling every month.
Potential side effects are possible. As with any medication, side effects can occur. Mild stomach upset (such as vomiting or diarrhoea) may be seen in some dogs. More serious reactions are uncommon but should be treated seriously—if you notice worrying symptoms or anything that concerns you after giving a dose, contact your vet promptly.
Not every dog’s medical history is the same. Some dogs need extra veterinary guidance due to underlying illness, other treatments, or breed sensitivities. Your vet is the right person to confirm suitability for your individual dog and to advise on testing and prevention timing.
Ultimately, the aim of this Heartgard Plus review is simple: help you understand where it fits best, where it doesn’t, and what questions to raise with your vet so your dog is properly protected.
How to choose the right option for your pet
Choosing among Heartgard Plus products is usually less about “best overall” and more about “best for your dog, right now”. Before adding to cart, work through these practical checkpoints.
- Match to your dog’s current weight. Use an up-to-date weight, and re-check after growth spurts or body condition changes. Puppies can change quickly, and weight changes can happen in adult dogs too.
- Consider age and life stage. Puppies, adults, and seniors can have different health considerations and testing needs. If you’re starting prevention for the first time (or restarting after a gap), your vet may recommend specific checks before you begin.
- Think about lifestyle exposure. Dusk walks, camping trips, homes near waterways, and warm coastal climates can increase mosquito exposure. Busy dog parks and shared outdoor spaces can increase opportunities for gut worm exposure.
- Plan for year-round consistency. Australia’s climate means mosquito activity can extend beyond what many people consider “summer”. A prevention plan works best when it’s consistent and realistic for your household.
If you’re unsure which option you’re after, it can help to start at the brand page and narrow down from there: browse the Heartgard Plus range.
Is it worth it? Value, convenience, and fit
For many households, Heartgard Plus feels worth it when it ticks three boxes: your dog accepts the chew, you can stick to a monthly schedule, and the coverage aligns with what you want it to do (heartworm prevention plus roundworm and hookworm control).
Who it’s often best for:
- Dogs whose owners want a simple, monthly routine and prefer a chew format.
- Households looking for heartworm prevention with added roundworm and hookworm coverage.
- Owners who already understand they’ll need separate protection for fleas/ticks and, where relevant, tapeworm.
Who it may not be best for:
- Owners seeking one product that covers fleas, ticks, and all worm types (including tapeworm).
- Dogs that won’t reliably take chews, making monthly dosing stressful or inconsistent.
- Dogs with complex medical histories where your vet recommends a different approach.
Overall, the value comes down to reliability: the right product is the one your dog can take consistently, that you can administer calmly, and that fits into a complete parasite plan based on your dog’s risks.
Frequently Asked Questions
Heartgard Plus for puppies: can puppies use it?
Some puppies can use Heartgard Plus, but the correct product choice depends on age, weight, and veterinary guidance. Because puppies grow rapidly and may have different testing and worming needs early on, it’s best to confirm the right timing and product with your vet and follow the label directions carefully.
How often do you give Heartgard Plus?
Heartgard Plus is designed to be given monthly. For the most appropriate schedule for your dog and location, follow the label and check in with your vet—especially if you’re starting for the first time, restarting after a gap, or planning year-round prevention.
What are the side effects of Heartgard Plus?
Side effects are possible with any medication. Some dogs may experience mild digestive upset. If you notice any unusual signs or anything that worries you after administering a dose, contact your vet promptly for advice.
What if I miss a dose?
If a dose is missed or given late, contact your vet for tailored advice and follow the product directions. Avoid guessing or doubling up—your vet can guide you on the safest next step based on your dog’s history and local heartworm risk.
Does it replace flea and tick protection?
No. Heartgard Plus doesn’t protect against fleas or ticks, and it doesn’t cover tapeworm. Many owners use it alongside other parasite protection to build a more complete plan suited to their dog’s lifestyle and their region.
Ready to compare options? Shop Heartgard Plus at Pacific Pet Supplies, and for personalised guidance for your dog’s situation, chat to your vet.