Treatment to kill adult heartworms. An injectable drug, melarsomine (brand name Immiticide®), is given to kill adult heartworms. Melarsomine kills the adult heartworms in the . How to Treat Heartworm Disease in Dogs.
Surgical removal of adult heartworms may be a treatment option if the heartworms can be seen by ultrasound. But surgery is risky, and if the heartworms are not removed intact, there can be.