Megestrol (Standard) is the analytical standard of Megestrol. This product is intended for research and analytical applications. Megestrol is an orally active glucocorticoid and progesterone receptor agonist. Megestrol can alleviate anorexia, cachexia or unexplained significant weight loss associated with acquired immunodeficiency syndrome (AIDS). Megestrol may cause manifestations similar to those of glucocorticoids and increase the risk of mental disorders.