Application of 20(R)-ginsenoside Rg3 in preparation of medicines for treating dysmenorrhea

The invention discloses a novel application of 20(R)-ginsenoside Rg3 in preparation of medicines for preventing and treating dysmenorrhea. Tests show that the 20(R)-ginsenoside Rg3 is significant in treating effects for the dysmenorrhea, quick in effectiveness, low in toxic and side effects, safe, efficient, stable, simple in preparation process, suitable for industrial production and prone to popularization. The application provides a novel medicine source for preventing and treating the dysmenorrhea and complications thereof.