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Heart murmurs and congestive heart failure (CHF) are common heart conditions in dogs, especially as they get older. Supporting your dog’s heart health early with natural supplements can help manage symptoms like coughing, fatigue, and breathing difficulties, while improving circulation and overall well-being. Combined with regular veterinary care, these supplements can make a meaningful difference in your dog’s quality of life.
Supplements play an important role in supporting dogs with heart murmurs, CHF, and other heart diseases by helping to:
Support Heart Function: Supplements like CoQ10 help strengthen the heart muscle and improve blood circulation.
Reduce Inflammation: Omega-3 fatty acids reduce inflammation in the cardiovascular system, easing strain on the heart.
Manage Symptoms: Key ingredients, like omega-3 fatty acids or Coenzyme Q10, may help reduce coughing, increase energy, and improve exercise tolerance.
Provide Antioxidant Protection: Antioxidants such as resveratrol help protect heart tissues from free radical damage.
Improve Quality of Life: Supporting overall heart health helps dogs stay more active and comfortable.
Natural supplements for dogs with heart disease work best alongside veterinary-prescribed treatments.
"We had some good news about Puff Daddy! Ever since Puff Daddy was a pup, different vets would say they heard a mild heart murmur. About two years ago, we started a heart disease protocol that included Amazing Omegas, Purrfect Pet CoQ10, and Resveratrol For Dogs. We went in for Puff Daddy’s rabies vaccination and the vet listened to his heart for quite some time. She looked up amazed. She heard no murmur. She asked me what I was giving him and said to keep it up. Puff Daddy has the energy of a puppy, running at full-speed with dogs 3-4x his size. I am so grateful for Ask Ariel."
What Is A Heart Murmur? A heart murmur is an abnormal heart sound. There are several different types of heart murmurs. The most common is a systolic murmur. These are usually caused by narrowing blood vessels in the heart but can also be caused by anemia, cardiomyopathy or hyperthyroidism. Diastolic heart murmurs are caused by leaks in the aortic valves and are quite rare in pets. Some murmurs are innocent or physiologic, which means that they are harmless sounds as the blood circulates through the heart. A pathologic heart murmur can be caused by disease or a structural defect in the heart. An irregular heartbeat, persistent coughing, and a lack of energy are classic signs of a heart murmur in dogs. Heart murmurs are graded by their intensity based on a scale of I to VI. A very slight, faint murmur will be a Grade I murmur. As they intensify, the scale increases. A loud murmur that can be felt is generally a Grade VI murmur. Many dogs with heart murmurs may not show symptoms early, but monitoring is important because murmurs can indicate conditions like valve problems or cardiomyopathy.
What is Congestive Heart Failure (CHF)? Does your dog have a persistent cough or difficulty breathing? These symptoms may be confused with a dog respiratory issue like bronchitis, but they are the most common symptoms of congestive heart failure (CHF). CHF is a progressive disease where the heart struggles to pump blood efficiently, leading to fluid buildup in the lungs or abdomen. Fluid accumulation on the left side of the heart leads to edema in the abdomen, while fluid accumulation on the right side produces coughing and lung congestion. CHF in dogs usually develops gradually in middle-aged and senior pets as a result of heart valve disease, cardiomyopathy, or other chronic heart conditions.
Signs of Heart Murmurs and CHF Include:
Persistent coughing, often worsening at night
Difficulty or rapid breathing
Fatigue and reduced exercise tolerance
Abdominal swelling due to fluid buildup
Weight loss or decreased appetite
Early diagnosis and treatment are essential for managing these conditions. Supplements can support heart function and ease symptoms but are not a replacement for veterinary care.
"I love the new CoQ10 formula for our dog, Bella. These capsules are easy to handle and administer. The outside is firmer, yet squeezable, making it easier to divide than other CoQ10 options. Thank you for providing this supplement to support Bella’s heart health. Even with a Grade IV heart murmur at age 15, she is happy and active. We feel that Ask Ariel's supplements have played a big part in keeping her healthy."
1. Monitor Closely – Regular vet visits and close observation at home help catch any changes early. Watch for coughing, breathing changes, energy dips, or appetite loss.
2. Exercise Safely – Moderate exercise helps maintain a healthy weight and supports heart function. Avoid strenuous activity and extreme weather. Bring water and adjust activity based on your dog’s condition.
3. Feed a Heart-Healthy Diet – The best heart disease diet for dogs is high in fiber and omega-3 fatty acids. Feed fresh, low-fat foods and green vegetables to provide vital nutrients while avoiding allergens and additives in processed foods. Some veterinary cardiologists recommend avoiding diets high in legumes (peas, lentils, chickpeas) due to a possible link to dilated cardiomyopathy (DCM) in dogs. Include your pet’s treats and diet on the order form at checkout, and we will include free heart diet tips on the packing slip that comes with your order.
4. Use Vet-Recommended Heart Supplements – Natural supplements like CoQ10, omega-3 fatty acids, and antioxidants support heart muscle strength, reduce inflammation, manage symptoms, and protect heart tissue. Supplements are an important part of managing heart murmurs and CHF when used alongside veterinary care.
Purrfect Pet CoQ10 - Supports circulation and heart health in pets. Made with genuine Kaneka Ubiquinol, the most absorbable and active form of CoQ10, this pure, natural supplement helps protect your pet’s heart and lungs from oxidative damage and inflammation. As pets age, they lose CoQ10, which is needed for energy and enzyme function at the cellular level. Purrfect Pet CoQ10 helps restore this vital antioxidant, supporting your pet’s heart and may help slow the progression of heart disease. Frequently recommended by veterinarians as a natural option for dogs with heart murmurs. Made in the USA, gluten-free, non-GMO, and hypoallergenic.
Power Probiotic - A balanced gut supports heart health by preventing harmful bacteria and toxins from entering the bloodstream and stressing vital organs. Backed by scientific research, this powerful, multi-strain probiotic supplement for dogs repopulates the good, friendly bacteria, which research suggests may reduce blood pressure and inflammation, supporting a healthy heart. It’s pure, safe and natural with no fillers. Many pets love the taste of Power Probiotic!
Amazing Omegas - A highly purified omega-3 supplement, Amazing Omegas provides essential fatty acids shown to support heart function in dogs. Omega-3s can help reduce inflammation, improve circulation, and promote overall cardiovascular health. Sourced from wild anchovies, mackerel and sardines, this oil is gently processed and third-party tested to ensure it’s free from heavy metals and environmental toxins. Amazing Omegas are made with a lemon scent and some finicky pets may not like the taste. Consider PureOcean Wild Omegas instead.
Resveratrol For Pets - Resveratrol is a premium antioxidant known for its cardiovascular and cancer-fighting benefits. It helps reduce inflammation in the blood vessels, lowering the risk of blood clots and supporting overall circulation - key factors in maintaining heart health. This unique heart supplement for dogs also includes New Zealand green-lipped mussels, a natural source of omega-3s and anti-inflammatory nutrients that work together with resveratrol to support cardiovascular health. Safe, natural, and veterinarian-recommended, Resveratrol For Pets is an excellent addition to your pet’s heart health regimen.
We understand how challenging it can be to manage heart disease in dogs. If you have questions, feel free to email us at [email protected] and we're happy to help. While we cannot provide veterinary advice, we can provide additional information to help you make informed decisions about your dog's heart health.
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 theOrange County Register.
