Updated On June 19th, 2019
Reviewed By Dr. JoAnna Pendergrass
Veterinarian
[Heartworm disease](https://www.petcoach.co/article/all-you-need-to-know-about-heartworm-disease/) is a serious condition in pets that can be fatal if left untreated. It is caused by the parasite *Dirofilaria immitis*, which is carried by mosquitoes. An infected mosquito that bites a dog or cat transmits heartworm larvae, called microfilariae, into the pet’s bloodstream. The larvae mature into adults within about 6 months and live for several years. Large numbers of circulating adult heartworms can make infected dogs and cats quite sick.
Heartworm symptoms range from mild to severe. In dogs, occasional coughing is a mild symptom; excessive abdominal fluid, which indicates heart failure, occurs with severe heartworm disease. Caval syndrome is a life-threatening condition in dogs that occurs when numerous heartworms block blood flow back to the heart. Cats with heartworm may have mild symptoms (such as weight loss and coughing) or severe symptoms including seizures or sudden collapse.
The current [treatment for canine heartworm disease](https://www.petcoach.co/article/everything-you-need-to-know-about-treating-heartworm-disease-in-y/) is a medication called melarsomine (also known by the brand name Immiticide), which kills adult heartworms. Unfortunately, this treatment is intense, expensive and can produce adverse side effects due to the death of the heartworms, including lung congestion, gagging and vomiting.
Natural Heartworm Treatments
The downsides of Immiticide can leave some pet parents considering natural heartworm treatment. Several natural heartworm treatments are available and are promoted by holistic veterinarians.
**HWF**
Formerly known as “Heartworm Free,” HWF is an herbal product that contains ingredients such as garlic, black seed, apricot kernel extract and hops berries. It is marketed as a “cardiovascular detox” for dogs with heartworm disease. However, several of HWF’s ingredients can be quite toxic to dogs. For example, garlic can damage a dog’s red blood cells, potentially leading to life-threatening anemia.
**Wormwood and Black Walnut**
Another herbal heartworm treatment is comprised of wormwood and black walnut. Wormwood contains tannins, which are known to irritate parasitic worms. However, tannins can damage the liver and kidneys and cause side effects such as vomiting and diarrhea.
Wormwood is often used in conjunction with black walnut. Black walnut is toxic to dogs and can cause symptoms like tremors, seizures and incoordination.
This natural remedy might be effective against adult heartworms, but the risk of organ failure makes this treatment an unsafe choice for treating heartworms.
**Homeopathic Heartworm Protocol**
A homeopathic heartworm protocol was devised by Dr. Deva Khalsa, a holistic veterinarian. This protocol consists of the following ingredients in various potencies:
Natural heartworm treatments are **not** FDA approved, meaning they have not undergone rigorous scientific testing to demonstrate safety and effectiveness for treating heartworms. Immiticide is the only FDA-approved heartworm treatment. Deciding to treat heartworms naturally can increase the risk not only of ineffective heartworm treatment, but also toxicity.
Natural Heartworm Preventives
Even though treating heartworm naturally is not a good idea, there are a few natural heartworm prevention strategies that are effective.
Bringing it Together
Natural treatments, though increasingly popular, have not been scientifically proven to be safe or effective. Giving your pet with a natural heartworm treatment could put your pet at risk of toxicity and delay the use of life-saving treatment. If your pet has heartworm disease, your best and safest option for treatment is FDA-approved Immiticide.
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