Epicatechin is a mixture of antioxidants and phenols. The effect of this is the increased stamina, blood flow and vascularity, this has been established over a number of research studies. It also boosts nitric acid production and insulin sensitivity. It achieves this by increasing follistatin levels, in turn inhibiting the actions of myostatin in the body to ‘remove the brakes’ on muscle growth, this means it will work well with other myostatin inhibitors or as part of a multi-pronged approach to muscle growth.
This is not currently banned by any agencies, so can be used by anyone.