In some cases, for dogs whose condition was caught before permanent damage was done to the heart, nutritional DCM can be reversed. The solution to nutritional DCM Is to switch, immediately, to a diet that is properly formulated. Board-certified veterinary cardiologists recommend the following highly-researched, tested, and professionally formulated brands: Purina Hill's Science Diet Royal Canin Depending on the severity of the disease progression, supplementation (of taurine and/or l-carnitine) and the use of prescription medications or therapeutic diets (such as Royal Canin Cardiac) may also be warranted. Time and time again this has been proven to help reverse nutritional DCM, when caught in time.