The Facts

• The slow kill method is achieved by giving the animal ivermectin (Heartguard) once per month. The ivermectin will stop new heartworms from growing, and gradually kill the existing parasites over a period of one to two years. Without treatment a heartworm can live up to five years.
  
  

Benefits

• The slow kill treatment is the most cost effective way to treat heartworms. It is also the gentlest way to rid your animal of the parasites.
  
  

Risks

• If your animal is past stage one of infection, this method may be ineffective. The dying worms stay in your animal for a much longer period of time. This poses the risk of pulmonary emboli which can be fatal.
  
  

Other Treatment Types

• The fast kill method can be used if your animal is in a more advanced stage of infestation, or the heartworms can be surgically removed.
  
  

Tips

• Your dog will be working hard to excrete the parasites. You can help him stay strong by feeding a quality diet. Talk to your veterinarian about a vitamin supplement to give during treatment.