Cardiovascular health
Hundreds of clinical tests L-arginine has been shown to have a dramatic effect on cardio-vascular health. Oral administration of l-arginine produces a 24% decrease in plasma cholesterol levels within hours and without negative side effects.
There is no drug that can give these type of results !
A 6 gram dose of specifically formulated arginine is required in order to affect this decrease. L-arginine therapy results in a decrease in platelet activity and an increase in vassal dilation thus reducing cholesterol. 
L-arginine often works as well as statin drugs in lowering cholesterol and keeps "bad" cholesterol from oxidizing and clogging your arteries. All this is done without the side effects statin drugs have such as cognitive impairment and cancer.
Arginine prevents the increase in blood pressure in cases of high-risk hypertension. In healthy humans with essential hypertension, L-arginine quickly reduces systolic and diastolic pressure, restoring blood pressure to normal levels, reversing the effects of angina and protecting against cardiovascular disease, heart attack and stroke.
This is more effective than any drug and also without negative side effects.
The Nobel Prize in Physiology or Medicine for l998 was awarded to Robert F. Furchgott, Louis J. Ignarro and Ferid Murad for their discoveries concerning “the nitric oxide as a signaling molecule in the cardiovascular system”.
Since then, arginine and cardio-vascular research in the scientific community and especially cardio-vascular surgeons have been very focused on finding out how to unleash L-arginines’s powerful capacity and utilize it in everyday medicine.
