Enacard 5mg tablets are for the treatment of mild moderate and severe congestive heart failure in dogs caused by mitral regurgitation or dilated cardiomyopathy as an adjunctive therapy with diuretics for improved exercise tolerance and increased survival in dogs with mild moderate and severe heart failure a vet prescription is required for the medicine you have chosen if you do not yet have a prescription then you can print out the following blank veterinary prescription form which you ca