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Home > Shop By Condition > Heart Disease In Dogs > Heartworms In Dogs

Support Your Dog’s Recovery from Heartworm: Best Natural Supplements


Heartworm disease is a serious condition that requires veterinary intervention, typically involving a series of injectable medications. While these treatments are vital, they can be hard on your dog. Our natural supplements are designed to support your dog's heart and immune system during and after heartworm treatment, helping them recover more effectively.

There is a misconception that heartworms are only a problem for pets in a few states. While heartworms are most prevalent in the Atlantic and Gulf Coast states, the infected mosquitoes carrying the heartworm larvae can travel quite far. Now, heartworm infections have been identified throughout the US, making preventative care best approach to protect your pet.

Heartworms are foot-long parasitic worms that resemble strands of spaghetti. Heartworm larvae (microfilia) are spread by mosquitoes. When a mosquito bites an infected cat or dog, their blood contains the larvae. The mosquito spreads the parasite by biting another cat or dog. The larvae mature into worms that circulate in the bloodstream of infected pets and live in the heart and lungs. They can damage and destroy the heart and lung tissue. Heartworms can live for up to 3 years in cats and almost 7 years in dogs. Heartworm disease affects cats and dogs differently.

  • Dogs - In dogs, heartworms can complete their life cycle, potentially leading to hundreds of worms within their bodies. Early signs of heartworm disease include persistent coughing, lethargy, and fatigue. As the disease progresses, dogs may lose their appetite and experience weight loss. Heartworms can even migrate to the brain, affecting mobility and cognition. A high number of worms can cause a swollen abdomen and block blood flow, leading to heart failure.

    Veterinarians typically treat heartworm infections with a series of injectable antiparasitic medications. In severe cases, surgical removal may be necessary. Unfortunately, heartworms can inflict lasting damage on the heart and lungs. This is where our natural heart supplements come in—supporting your dog's heart and immune system throughout and after the treatment process.

  • Cats - Most heartworms in cats do not survive to the adult stage. Heartworms in other life stages also present a risk for cats. They can still damage the heart and lungs. Signs of heartworm disease in cats may include coughing, labored breathing, vomiting, lack of appetite and weight loss. Cats may develop heartworm-associated respiratory disease (HARD). Prevention is the only protection for cats, as the medications used for dogs cannot be used in cats.



Most dogs have an advanced case of heartworms by the time they are diagnosed. Veterinarians generally treat with a series of injectable antiparasitic medications along with a course of antibiotics. The injections are spread out over a few months. During treatment, dogs need to rest and restrict exercise. This is because physical activity and an increased heart rate can allow heartworms to damage the heart and lung tissue. This dog heartworm treatment protocol has a success rate of over 90%. While medications treat the dog’s immediate symptoms, natural supplements can strengthen their heart and immune system for long-term support.

Natural Supplements For Heartworms


Coenzyme Q10 for dogs

Purrfect Pet CoQ10

The antioxidant, energy-promoting, and cardioprotective properties of CoQ10 make it an effective adjunctive therapy for dogs with heartworm disease. Coenzyme Q10 has antioxidant properties that help counteract the oxidative stress and tissue damage caused by heartworm infection. CoQ10 is involved in cellular energy metabolism, where it helps generate adenosine triphosphate (ATP), the primary energy for cells. Heartworm infection can place a significant metabolic burden on the heart, leading to energy depletion and dysfunction. By enhancing cellular energy production, CoQ10 supports the heart's ability to pump blood efficiently and improves exercise tolerance in dogs affected by heartworm disease. CoQ10 has cardioprotective effects, helping to maintain normal heart function and structure. Purrfect Pet CoQ10 is made with genuine Kaneka Ubiquinol for maximum benefit and highest absorption. Pure, safe & natural. Made in the USA.

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Resveratrol For Dogs

Resveratrol For Pets

Resveratrol possesses antioxidant and anti-inflammatory properties, which can help fight the inflammation and oxidative stress caused by heartworm infection. Resveratrol may help reduce tissue damage caused by heartworms and aid in the healing process. Resveratrol has also been shown to support cardiovascular health by promoting vasodilation and improving blood flow. This can help alleviate some of the symptoms associated with heartworm disease, such as exercise intolerance and respiratory distress. Resveratrol's antioxidant properties may protect against further damage to the heart and blood vessels, potentially reducing the risk of complications from heartworm infection.

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fish oil for cats

PureOcean Wild Omegas

Fish oil, rich in omega-3 fatty acids like EPA and DHA, have anti-inflammatory properties that can help modulate the inflammatory responses associated with heartworm infection. By reducing inflammation, fish oil may help alleviate some of the symptoms and tissue damage caused by heartworms, particularly in the cardiovascular system. Omega-3 fatty acids support cardiovascular health by promoting normal heart function and circulation. In dogs with heartworm disease, where the heart may be under increased strain, supplementation with fish oil can help maintain optimal heart function, increase blood flow and improve cardiac output. PureOcean Wild Omegas are made from wild-caught sardines, anchovies & mackerel. They have a natural fishy flavor and many pets love the taste.

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Olive Leaf For Dogs

Olive Leaf Extract For Pets

Olive leaf extract has natural antimicrobial activity. While heartworm disease is caused by a parasitic worm, holistic practitioners suggest that olive leaf's antimicrobial properties can support the immune system in fighting off secondary infections or complications associated with heartworm infestation. Olive leaf extract is rich in antioxidants, such as oleuropein and hydroxytyrosol, which have anti-inflammatory and cardioprotective effects. By reducing inflammation and oxidative damage, olive leaf may help reduce damage to the heart and blood vessels. Olive leaf has vasodilatory properties that help relax and widen blood vessels to improve circulation. In dogs with heartworm disease, where blood flow may be compromised due to worm infestation and inflammation, enhanced circulation can help reduce cardiovascular symptoms and improve cardiac function.

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Susan Blake Davis, Pet Nutritionist
About The Author: Susan Blake Davis, MA, MBA, CCN
Susan Blake Davis, CCN, is a Pet Nutritionist and founder of Ask Ariel, providing veterinarian recommended, human-grade supplements for dogs and cats for over 20 years. Susan developed these supplements after years of working in animal rescue, helping thousands of shelter pets regain their health through holistic nutrition and care.

From 2005 to 2015, she offered holistic pet nutrition consultations at VCA Hospitals and a veterinary oncology center, working alongside Dr. David Gordon, a respected integrative veterinarian in Southern California. Over the years, veterinarians nationwide have recommended Ask Ariel supplements after seeing firsthand the proven results in their patients.

A Phi Beta Kappa graduate of UC Davis with a Master’s from UCLA and certification as a Clinical Nutritionist, Susan’s expertise has been featured in Catster, Dogster, The Los Angeles Times, and the Orange County Register.


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