Cardio Support tablets are a unique combination of L- Carnitine, Taurine, Co-enzyme Q10, Hawthorn extract, Eleuthero and Arjuna extract. It supports overall cardiovascular health of dogs and cats. L-carnitine supports the use of fat for energy and oxygen utilization. L-taurine moves key nutrients, such as potassium, magnesium and calcium, in and out of the heart's cells to improve its functioning.