If you’ve recently given your dog a heartworm treatment, you may be wondering: How long does a dog live after a heartworm treatment? This article will discuss side effects and behaviors after heartworm treatment, and answer the question: Can heartworm treatment kill my dog? 


In short, A dog lives as long as it doesn’t get complications and side effects after the heartworm treatment.

This article will provide you with the answers you’re looking for! Continue reading to find out more! If you’re concerned about your dog’s health after heartworm treatment, you should consider using a preventative for your dog. Heartworm prevention is vital for your dog’s overall health.

Dog Life Expectancy after Heartworm Treatment

After heartworm treatment, your dog must rest for at least two months. Although it is important for your pet’s health, the rest is necessary for your own as well. It will need a crate or a kennel to rest, and you should discourage visitors while he is in treatment. 

You should also avoid strenuous activities, including playing fetch or tug-of-war. Heartworm treatment can increase your dog’s heart rate, so you should limit his or her physical activity.

Risks of the Cardiovascular Diseases

If your dog develops trouble breathing, consult a veterinarian as this may be a sign of caval syndrome, a potentially life-threatening cardiovascular disease that requires immediate surgery. 

Left untreated, heartworm disease may lead to serious long-term symptoms or even death. 

Because it shares many symptoms with other health conditions, heartworm disease should be detected and treated as soon as possible. 

Tests usually take only a small amount of blood from your dog and are painless.

Dog Heartworm Treatment Side Effects

Although most dog owners have no experience with dog heartworm treatment side effects, some dogs do experience mild or moderate adverse effects. 

A few may develop coughing, lethargy, or decreased appetite following heartworm therapy. While none of these side effects are serious, many veterinarians recommend that owners monitor their pets for a few weeks after treatment. 

If you’re worried that your dog is still infected, consider using a herbal medication instead.

Risks associated with Melarsomine Treatment in Dogs

The melarsomine treatment is typically given twice. The second injection is given one day after the first. Both treatments require two visits to the veterinarian, including 24 hours in the hospital. 

A pet must be on a strict exercise restriction for eight weeks following the second injection. 

Dog heartworm treatment side effects may be less severe if your pet is under close observation for a few days after each treatment. The last injection must be given six to eight weeks after the first.

Dog Behavior after Heartworm Treatment

Following a heartworm treatment, your dog will show some signs of recovery. The symptoms usually appear one to ten days after the procedure. 

However, some dogs may exhibit signs of heartworm infection for up to four weeks. To confirm that the treatment was successful, your veterinarian will administer a blood test two weeks after the procedure. 

At this point, your vet will also start your dog on heartworm preventative medication. During this time, your dog is likely to remain quiet and quieter than usual.

After the heartworm injection, your dog may feel sore. You should not pressure or touch the area after the injection. It may take a few days for your dog to feel better, so monitor his activity level. 

Don’t let him run free for a few days after the treatment. This may cause the heartworm infection to recur. 

Can Heartworm Treatment Kill My Dog?

The first question that arises in most owners is “Can heartworm treatment kill my dog?” The answer depends on the severity of your dog’s heartworm infection. 

The worst-case scenario is that the treatment kills your dog.

A dog with a Class 1 infection needs a two-dose treatment, while one with a Class 3 infection should receive a three-dose treatment. 

A veterinarian will prescribe the appropriate treatment for your dog, depending on his or her specific condition. Both two-dose and three-dose treatments kill heartworms at their adult stages. 

The three-dose protocol, on the other hand, is associated with a lower risk of pulmonary thromboembolism in your dog.

How Can Heartworm Treatment Kill a Dog?

The heartworms die inside your dog’s body, releasing bacteria that can cause inflammation and infection. The antibiotics your dog receives will reduce these bacteria and reduce inflammation. 

Although the treatment is often associated with serious complications (including death), these are rare. Most dogs recover from heartworms, and a single treatment can save their lives. 

How Dangerous is Heartworm Infection for Dogs?

Dogs are more susceptible to heartworm infection than humans are. Symptoms of heartworm disease can be mild or severe, depending on the level of infestation. 

Symptoms of heartworm disease include a soft, dry cough, lack of stamina, and weakness, particularly after activity

Using a stethoscope, your vet can identify abnormal heart and lung sounds. Severe heart failure may cause the dog to exhibit swollen abdomens, fluid build-up, and weight loss. During exercise, dogs may even die.

Is Heartworm Disease in Dogs Contagious?

The only way that heartworm disease is transmitted from dog to dog is by the bite of a mosquito carrying the parasite. Therefore, if you see an infected mosquito, it’s likely that your dog has been infected by the parasite. 

Because the parasite takes up to four years to infect a dog, an uninfected mosquito can’t transmit heartworm to an uninfected dog.


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