GTDF and gAd induce C2C12 myoblast differentiation. GTDF and gAd mitigate steroid, cytokine and starvation –induced myotube atrophy. Anti-atrophy action of GTDF and gAd involves activation of AMPK and AKT. GTDF and gAd induces PGC-1α and inhibits FoxO1 and 3. GTDF and gAd mitigate dexamethasone-induced skeletal muscle atrophy in vivo.