Heartworm Treatment Costs
Treating heartworm disease is expensive because it requires multiple vet visits, diagnostic tests, and a series of injections over several months:
| Component | Typical Cost |
|---|---|
| Diagnosis (blood test + X-rays) | $150-400 |
| Melarsomine injections (3-dose protocol) | $500-1,200 |
| Antibiotics (doxycycline, 30 days) | $30-80 |
| Follow-up tests and monitoring | $100-300 |
| Total treatment cost | $800-2,000+ |
Prevention vs Treatment: The Math
Monthly heartworm prevention costs $5-15 per month, or $60-180 per year. Treatment costs $800-2,000+. Prevention is not just safer for your dog — it is dramatically cheaper. A single year of prevention costs less than the diagnostic bloodwork alone.
Finding Affordable Heartworm Prevention
- Online pharmacies — Chewy, PetCareRx, and 1-800-PetMeds often sell heartworm preventatives for less than vet offices.
- Generic options — Generic ivermectin-based preventatives cost less than brand-name products and are equally effective.
- Low-cost clinics — Many nonprofit clinics sell preventatives at or near their cost.
- Manufacturer rebates — Many heartworm prevention brands offer rebates when you buy 6 or 12 months at once.
Find Affordable Vet Care Near You
PawCost is a free directory of low-cost vet clinics, vaccine events, and pet care resources across the United States. Search by location to find affordable options in your area, compare prices across provider types, and access financial assistance resources.
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Prices mentioned in this article are estimates based on publicly available data and may vary by location, provider, and individual circumstances. PawCost is an independent directory and is not affiliated with any listed provider. Always verify prices directly with the provider. Last updated 2026.
Disclaimer: PawCost is an independent directory service. We are not affiliated with any listed providers. Information is for educational purposes and may not reflect current pricing. Always verify details directly with providers.
Written by PawCost Team
Practical pet care advice to help you save on veterinary costs.