How to Support a Dog with Heart Disease at Home

Important Note

Heart disease in dogs requires veterinary diagnosis and prescription medication management. Home care supports quality of life and complements — but does not replace — veterinary treatment. Always follow your vet's specific recommendations for your dog's condition and stage of disease.

Understanding Dog Heart Disease

The most common heart disease in dogs is myxomatous mitral valve disease (MMVD), particularly in small breeds. Dilated cardiomyopathy (DCM) is more common in large breeds. Both conditions reduce the heart's ability to pump blood effectively, eventually leading to congestive heart failure (CHF) if untreated.

Home Support for Dogs with Heart Disease

1. Cardiovascular Support Supplements

Several supplements have evidence supporting cardiovascular health in dogs. Always discuss with your vet before starting, especially if your dog is on cardiac medications.

💊 Recommended: Wonder Paws Cardio Support Chews — Contains L-Carnitine, Hawthorn Berry, CoQ10, and Taurine. Supports cardiovascular health, circulation, energy, and weight management. 90 soft chews.

💊 Recommended: CoQ10 Heart Chews for Dogs — Supports heart health, cognitive function, and energy. CoQ10 is a key antioxidant for cardiovascular and gum health. Bacon flavor, 120 count.

2. Sodium-Restricted Diet

Excess sodium causes fluid retention, which worsens heart failure symptoms. Dogs with heart disease — especially those in congestive heart failure — benefit from a low-sodium diet. Avoid salty treats, processed human food, and high-sodium dog foods. Ask your vet about prescription cardiac diets.

3. Omega-3 Fatty Acids

💊 Recommended: Pets Purest Salmon Oil — Omega-3 fatty acids support heart health and reduce inflammation. Add to food daily. 32 fl oz.

4. Appropriate Exercise

Exercise management is critical. Dogs with early heart disease can continue moderate exercise. Dogs in heart failure need restricted activity — short, gentle walks only, avoiding heat and excitement. Follow your vet's specific exercise guidelines for your dog's stage.

5. Monitor Resting Respiratory Rate

The resting respiratory rate (RRR) is the most important home monitoring tool for dogs with heart disease. Count breaths per minute while your dog is sleeping. A normal RRR is under 30 breaths per minute. An RRR consistently above 30, or a sudden increase, indicates fluid accumulation in the lungs — call your vet immediately.

💊 Recommended: Tractive Smart Dog GPS & Vital Signs Tracker — Monitors heart rate and respiratory rate continuously. Alerts you to changes in vital signs. Invaluable for monitoring dogs with heart disease between vet visits.

6. Maintain Healthy Weight

Excess weight forces the heart to work harder. Weight management is particularly important for cardiac dogs. See our guide on how to help an overweight dog lose weight.

7. Reduce Stress

Excitement and stress increase heart rate and cardiac workload. Maintain a calm, predictable routine. Avoid situations that cause significant excitement or anxiety.

Signs of Worsening Heart Disease — Call Your Vet

• Resting respiratory rate above 30 breaths/minute
• Coughing — especially at night or after lying down
• Exercise intolerance — tiring more quickly than usual
• Fainting or collapsing
• Blue or gray gums (emergency)
• Abdominal distension (fluid accumulation)