Dienogest Powder is a progestin, or a synthetic progestogen.  It is available in combination with estradiol valerate (as Natazia, Qlaira) or ethinylestradiol (as Valette) for use as an oral contraceptive, and by itself (as Visanne, Dinagest) for the treatment of endometriosis in Europe, Australia, and Japan.
Dienogest  is a progestin, or a synthetic progestogen.  It is available in combination with estradiol valerate (as Natazia, Qlaira) or ethinylestradiol (as Valette) for use as an oral contraceptive, and by itself (as Visanne, Dinagest) for the treatment of endometriosis in Europe, Australia, and Japan.  Although available in combination with estrogen as a contraceptive in the United States, dienogest is not available in this country by itself.  In addition to its progestogenic effects, dienogest has antiandrogenic activity, and as a result can improve androgenic symptoms such as acne.

1. Dienogest is an orally active synthetic progesterone (or progestin).  It is available for use as an oral contraceptive in combination with ethinylestradiol.  It has antiandrogenic activity and as a result can improve androgenic symptoms.
2.  Derivative of 19-Nortestosterone.  In combination with estrogen as oral contraceptive.  Progestogen.