From the Manufacturer:
Clinical & laboratory research studies conducted with Cardi-Plant Pro shows that it supports efficient heart function by promoting blood & nutrient flow to the heart muscle. It also enhances blood circulation to the entire body by reducing flow resistance in peripheral blood vessels.
Hawthorne extract:
Helps with angina by dilating the blood vessels in the heart and improving the metabolic processes in the heart.
Helps with congestive heart failure by working as a heart "tonic" to increase the contraction of the heart muscle in a way similar to digitalis.
Helps with heart rhythm disturbances.
Helps lower blood pressure over several weeks usage.
Improves general circulation.
Decreases cholesterol levels.