Offered for sale by Ergo Health as a powerful anti-oxidant to mitigate damage from environmental stressâ, Ergothioneine reduces immune cells accumulation inside of blood vessels. The effect is to avert the development of atherosclerosis - effectively offering a level of protection against cardiovascular disorders such as heart attack and stroke. By scavenging reactive oxygen and nitrogen species, Ergothioneine prevents these harmful molecules from damaging healthy tissues, especially in: red blood cells, bone marrow, the liver, kidneys, the eye and seminal fluid.