Heart Supplements for Cats:
Natural Support for HCM & Heart Murmurs
Heart problems like hypertrophic cardiomyopathy (HCM), congestive heart failure (CHF), and high blood pressure are common in cats, especially as they get older. These conditions can affect your cat’s breathing, energy, and comfort. While veterinary care is essential, natural supplements can offer additional support by promoting cardiovascular function and enhancing your cat’s quality of life.
Why Use Heart Supplements for Cats?
Heart supplements work by supporting healthy circulation, reducing oxidative stress, and helping the heart work more efficiently. Many contain omega-3s, antioxidants, and nutrients that aid cellular energy production and reduce inflammation. Used alongside your veterinarian’s treatment plan, these supplements may help manage symptoms and support your cat’s heart health over time.
Hypertrophic Cardiomyopathy (HCM) in Cats
HCM is the most frequently diagnosed heart condition in cats. It causes the heart’s muscular walls to thicken, making it harder for the heart to pump blood effectively. While some cats show no symptoms, others may develop breathing difficulties, weakness, or even sudden limb paralysis due to blood clots. Certain breeds - like Maine Coons and Ragdolls - are genetically predisposed. An echocardiogram is the most accurate tool for diagnosing HCM. Treatment typically includes medications to improve heart function and circulation, and many cats can live comfortably for years with proper care and nutritional support.
Heart Murmurs in Cats
A heart murmur is an abnormal sound heard during a cat’s heartbeat, often caused by irregular blood flow. In cats, murmurs may be linked to conditions such as hypertrophic cardiomyopathy (HCM), anemia, or hyperthyroidism. Some murmurs are harmless (called innocent or physiologic), while others are due to structural heart issues or disease. Murmurs are graded on a scale from I to VI based on their loudness, with Grade VI being the most intense. Not all murmurs indicate serious problems, but they do warrant monitoring. Cats with heart murmurs may show signs like reduced energy, irregular heartbeat, or labored breathing. Natural support—including antioxidants and omega-3s—may help maintain heart health when used alongside veterinary care.
High Blood Pressure (Hypertension) in Cats
High blood pressure is a common condition in older cats and is often secondary to underlying issues like kidney disease, hyperthyroidism, or diabetes. Over time, sustained hypertension can strain the heart, damage organs, and contribute to heart disease. Because cats rarely show early signs, high blood pressure can go unnoticed without routine vet checks. Regular monitoring and treating the root cause can help bring blood pressure back into a healthy range. Natural supplements that support circulation and reduce oxidative stress may also complement veterinary treatment.
Congestive Heart Failure (CHF) in Cats
Congestive heart failure in cats occurs when the heart can no longer pump blood efficiently, leading to fluid buildup in the lungs or abdomen. This fluid accumulation can cause labored breathing, lethargy, and decreased appetite - though signs in cats are often subtle until the disease progresses. CHF can be caused by conditions such as HCM or high blood pressure and tends to affect older cats more frequently. Early diagnosis and ongoing management, including medication and supportive supplements, can help improve comfort and quality of life.
What To Feed A Cat With A Heart Murmur Or Heart Disease
Cats with heart conditions such as murmurs, hypertrophic cardiomyopathy (HCM), or congestive heart failure (CHF) do best on a low-fat, high-quality diet made from real, whole foods that are rich in lean protein and low in sodium.
1. Feed a Low-Fat, High-Quality Diet With Whole Food Nutrition
A low-fat, high-quality diet made with whole-food ingredients provides the best nutrition for cats with heart conditions. Cats are obligate carnivores, meaning they need nutrients from animal protein, not carbohydrates. High-carb diets can cause inflammation, weight gain, and blood sugar fluctuations, all of which can put extra stress on the heart. Choose raw or lightly cooked diets made with lean meats such as turkey or rabbit. Avoid fillers like corn, soy, or wheat, which add unnecessary carbohydrates and offer little nutritional value.
2. Keep Sodium Levels Low
Too much sodium can cause fluid retention and make it harder for your cat’s heart to function efficiently. Avoid processed cat foods, table scraps, and commercial treats that contain added salt or flavor enhancers.
3. Include Omega-3 Fatty Acids
Omega-3s from fish oil (EPA and DHA) help reduce inflammation, support circulation, and may help regulate heart rhythm. Supplements like
PureOcean Wild Omegas are an easy way to boost omega-3 intake if your cat’s diet doesn’t include enough fatty fish.
4. Maintain a Healthy Weight
Excess weight increases strain on the heart and can worsen symptoms like fatigue or shortness of breath. Ask your vet for your cat’s ideal weight range and monitor food portions carefully. Even small weight loss can improve energy and comfort in cats with heart disease.
5. Manage Harmful Bacteria in the Gut and Bloodstream
The gut plays a surprising role in heart health. Harmful bacteria in the intestines can release toxins into the bloodstream, increasing inflammation and putting added stress on the heart. A high-quality probiotic such as
Power Probiotic helps crowd out bad bacteria, balance the microbiome, and reduce systemic inflammation—supporting your cat’s heart and immune system. Incorporating fiber-rich foods like pumpkin or butternut squash can also help as they contain prebiotic fibers that feed beneficial gut bacteria and support heart function too.
In summary, feeding a low-fat, whole food diet and maintaining a healthy body weight can make a big difference in your cat’s comfort, energy, and longevity. If you’d like personalized diet tips, include your cat’s current food and treats on the order form at checkout, and we’ll send free tips on what to feed your cat with heart disease on the packing slip that comes with your order.
Best Supplements For Cats With Heart Murmurs & CHF
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!
PureOcean Wild Omegas - PureOcean Wild Omegas are concentrated, easy-to-use softgels. They have a natural fishy flavor and many pets love the taste. Fish oil is rich in omega-3 fatty acids, particularly eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA). They help reduce inflammation in the heart and cardiovascular system, support heart function by helping to regulate heart rhythm, and may help lower blood pressure in pets with hypertension (high blood pressure). PureOcean Wild Omegas may help reduce symptoms such as coughing, difficulty breathing, and low energy levels.
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.
Need Help Choosing The Right Supplements?
We understand how challenging it can be when your cat has heart disease. 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 cat'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 the Orange County Register.
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