Myostatin inhibitors have not been developed for human use but are being worked on at John Hopkins University by Se Jung Lee. A myostatin antibody is introduced with a protein serum that contains
denatured/disabled viruses to deliver the antibody into the cells by "viral injection" then uncontrolled muscle growth "muscle doubleing" occurs. Theoretically the uncontrolled muscle growth can then be stopped by reintroducing a myostatin dna strand with a viral carrier at another time. Mice have had Myostatin completely removed invitro and experienced large growth before they die. The supplement is completely bogus.