Dog heart & liver supplements can be a helpful part of a holistic approach to keeping your pet healthy as they age or manage chronic conditions. Formulated to support cardiovascular function and hepatic detoxification, these products commonly combine omega-3 fatty acids (EPA/DHA) to reduce inflammation and support circulation, taurine and L‑carnitine for myocardial energy metabolism, and antioxidants such as CoQ10, vitamin E, and vitamin C to protect cells from oxidative stress. For liver support, ingredients like milk thistle (silymarin), SAMe, and B vitamins are often included to promote detoxification pathways and regeneration of healthy liver tissue. While supplements can improve appetite, energy and quality of life when used appropriately, they are not a substitute for veterinary diagnosis and treatment; dosing, timing, and potential interactions with prescription medications must be guided by your veterinarian.