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Can ivermectin cure heartworms?

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Ivermectin does not kill adult heartworms. Ivermectin does shorten the lifespan of adult heartworms. Ivermectin does sterilize adult heartworms. Ivermectin does kill microfilaria (keeping the dog from being a source of contagion) • Ivermectin does kill L3 and L4 larvae (preventing new infections).


Can heartworms be treated with ivermectin?

Ivermectin is most commonly used as a heartworm preventive in dogs and cats. It also used 'off label' or 'extra-label' for treating a variety of internal and external parasites.

Can you give ivermectin to a heartworm positive dog?

A: All heartworm preventives are safe to administer to any breed of dog (including those that are sensitive to ivermectins) if given according to labeled doses. There are no specific breeds that are known to be particularly sensitive to melarsomine.

How effective is ivermectin against heartworms?

It is effective in killing larval heartworms (the "microfilariae" that circulate in the blood) but does not kill adult heartworms (that live in the heart and pulmonary arteries), though technically it can shorten their lifespan.

What medicine kills heartworms?

An injectable drug, melarsomine (brand name Immiticide®), is given to kill adult heartworms. Melarsomine kills the adult heartworms in the heart and adjacent vessels. This drug is administered in a series of injections. Your veterinarian will determine the specific injection schedule according to your dog's condition.

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