Heartworm Treatment Cost in Texas (2026)

Vet costs in Texas are 8% below national avg, so heartworm treatment prices run lower here too. Exact costs depend on your pet's size, age, and which clinic you use. The breakdown below shows what Texas clinics charge for heartworm treatment in 2026, how each line item compares nationally, and practical ways to save. Low-cost clinics and humane societies can cut some of these prices by half or more.

Vet Cost by City in Texas

City	Wellness Exam	Notes
Austin	$64	Tech-sector growth; above state avg
Dallas	$62	Near state avg
Houston	$61	Large supply; competitive
San Antonio	$58	Affordable; below state avg
Fort Worth	$60	Near Dallas avg

Heartworm Treatment Cost in Texas — FAQ

How much does heartworm treatment cost for a dog in Texas?

Heartworm treatment in Texas averages $1,380 in 2026 — 8% below the national average. The standard melarsomine protocol (3 injections over 2 months plus pre-treatment bloodwork, X-rays, and strict exercise restriction) typically runs $1,000–$2,500 total. Annual heartworm prevention costs $110 and is far less expensive.

Is there a cheaper heartworm treatment option in Texas?

The 'slow kill' method (monthly ivermectin without melarsomine) is cheaper but takes 1–2 years, doesn't kill adult worms directly, and is no longer recommended by the American Heartworm Society due to resistance concerns. The standard melarsomine protocol at $1,380 in Texas is the only AHS-approved treatment. Humane societies and veterinary schools sometimes offer discounted treatment.

What happens if heartworms are left untreated in Texas?

Untreated heartworm disease is fatal. Adult worms grow up to 12 inches long inside the heart and pulmonary arteries, causing progressive heart and lung damage. Dogs with heavy worm burdens develop congestive heart failure within 1–3 years. In Texas, heartworm prevention costs $110/year — about 8% of what treatment costs. Prevention is the clear choice.