Buy Myostatin Inhibitor Peptide GDF-8 1mg / vial Powder Online   What is GDF-8? GDF-8 is a myostatin inhibitor of muscle growth and development process. Myostatin is present in the healing process of muscles and its nature is to inhibit myogenesis (the process of formation of muscular tissue). Scientists have been studying a new method to enhance the repair and regeneration of both …