Quick Answer
If you are shopping for heartworm tablets for dogs in Australia, Waggly Shop’s current tracked range is dominated by Valuheart monthly tablets. Right now, the lowest tracked 12-tablet prices start at $31.90 for small dogs, $37.88 for medium dogs, and $37.88 for large dogs. If you want the lowest upfront spend, the 6-tablet packs are cheaper at checkout. If you want the clearest value jump, the large-dog 12-tablet pack is the standout.
Heartworm prevention is one of those jobs that is easy to forget right up until you remember why it matters. In Australia, heartworm is spread by mosquitoes, and once a dog is infected the treatment path is far more painful and expensive than simply staying on top of monthly prevention. For owners who prefer a straightforward tablet rather than a broader all-in-one chew, heartworm tablets are still a practical option.
This guide focuses on the heartworm tablet products Waggly Shop currently tracks live in this segment: the Valuheart monthly tablet range for small, medium and large dogs. If you want broader monthly parasite cover instead of heartworm-only tablets, our Sentinel Spectrum Australia guide and NexGard Spectra comparison are the two most relevant next reads.
Why heartworm tablets still make sense in Australia
The University of Sydney’s veterinary hospital notes that dogs in Greater Sydney should stay on consistent year-round parasite prevention, including protection against heartworm spread by mosquitoes. That matches the broader Australian reality: even indoor-heavy dogs still go outside, still get bitten, and still carry risk if prevention lapses. Monthly tablets suit owners who want one simple recurring job without stepping up to a combination flea, tick and worming product.
Valuheart’s own product information positions the range as simple monthly heartworm prevention using ivermectin. So the buying question is not whether the range is complicated. It is whether you should buy six months at a time or twelve, and which colour band matches your dog’s weight.
Heartworm tablets for dogs in Australia: July 2026 price table
| Product | Pack | Current price | Cost per tablet |
|---|---|---|---|
| Valuheart Small Dogs up to 10kg Blue | 6 tablets | $15.91 | $2.65 |
| Valuheart Small Dogs up to 10kg Blue | 12 tablets | $31.90 | $2.66 |
| Valuheart Medium Dogs 11 to 20kg Green | 6 tablets | $18.94 | $3.16 |
| Valuheart Medium Dogs 11 to 20kg Green | 12 tablets | $37.88 | $3.16 |
| Valuheart Large Dogs 21 to 40kg Gold | 6 tablets | $21.90 | $3.65 |
| Valuheart Large Dogs 21 to 40kg Gold | 12 tablets | $37.88 | $3.16 |
The main pattern is easy to read. Small-dog pricing is almost flat between the 6-tablet and 12-tablet pack once you reduce it to a monthly cost. Medium-dog pricing is effectively flat too on the current numbers. The real value jump shows up in large dogs, where the 12-tablet pack brings the monthly cost down to $3.16 per tablet compared with $3.65 for the 6-tablet version.
Small dogs up to 10kg: cheapest upfront spend
The Valuheart Blue 6-tablet pack for small dogs is the cheapest entry point at $15.91. If you already know your dog will stay in this weight band for the next year, the 12-tablet pack costs $31.90 and works out to roughly $2.66 per month. That is only a marginal saving against the 6-pack, so small-dog owners can make the call based mostly on cash flow and convenience.
Medium dogs 11 to 20kg: twelve months starts to win
For medium dogs, the story is more about convenience than savings. The Green 6-tablet pack starts at $18.94, while the Green 12-tablet pack is $37.88. On the current pricing, both land at roughly $3.16 per monthly tablet, so the 12-pack mainly buys you fewer reorder moments rather than a sharper unit price.
Large dogs 21 to 40kg: best value in the current catalogue
The strongest value play in the current Waggly table is the Valuheart Gold 12-tablet pack for large dogs at $37.88. The matching 6-tablet pack is $21.90, which means the 12-pack cuts the effective monthly cost from $3.65 to $3.16. If your dog is a steady adult in this weight range, there is a clear case for buying the year ahead.
Should you buy 6 tablets or 12 tablets?
Buy the 6-tablet pack if your dog is still growing, sits right on the edge of a weight bracket, or you just want the lower upfront spend. Buy the 12-tablet pack if your dog is fully grown, stable in the right size band, and you want fewer reorder moments over the year. That is really the trade-off: flexibility versus convenience and a lower monthly cost.
If you want broader parasite cover in one product, monthly heartworm tablets are probably not the end of your comparison journey. In that case, compare heartworm-only tablets against Sentinel Spectrum or NexGard Spectra, especially if flea, tick and intestinal worm protection matters to you as well.
Methodology and source note
Prices in this guide come from Waggly Shop’s live product catalogue at publication time, using the current tracked tablet prices on the linked product pages. We calculated cost per tablet directly from those current prices. For broader parasite-prevention shopping, you can also browse our dog supplies category. For veterinary context, see the University of Sydney’s parasite prevention advice for dogs and the official Valuheart product site.
FAQ
What is the cheapest heartworm tablet option for dogs in Australia right now?
In Waggly Shop’s current tracked catalogue, the cheapest upfront option is the Valuheart Blue 6-tablet pack for small dogs at $15.91.
Which Valuheart pack is best value per tablet?
The current best value per tablet is the Valuheart Gold 12-tablet pack for large dogs, which works out to about $3.16 per tablet.
Are 12-tablet packs always better than 6-tablet packs?
Not always. They are usually better on convenience, and often better on monthly cost, but if your dog is still growing or may move into another weight band soon, a 6-tablet pack can be the safer buy.
Do heartworm tablets cover fleas and ticks too?
No. The Valuheart tablets covered in this guide are heartworm-only prevention products. If you want broader monthly parasite protection, compare them with combination products like Sentinel Spectrum or NexGard Spectra.
How often should dogs take heartworm tablets in Australia?
These products are monthly tablets. Consistent year-round prevention is the practical standard for many Australian dogs, but your own vet is the right person to confirm the best schedule for your dog and location.