As for this invention, the wide windbreak glycoside A which shows in the below-mentioned formula 1,With it regards the wide windbreak root extract formulation and its manufacturing method of including that. This formulation to be the wide windbreak root extract and various internal use formulation which consist of the medicinal auxiliary material, the wide windbreak root extract among those to extract the root of the wide windbreak with the water, after concentrating, it is the extract which is obtained, wide windbreak glycoside A occupies 0.10 - 1.50%. Because there is no hormone in the wide windbreak root formulation of this invention, after taking, using the professional guest gene with addition, it is not necessary to prevent the defective reaction. Also the clinical curative effect is considerable, also quality is stable, control characteristic and safety are good, are suited for long-term taking of the woman of the especially change of life.本発明は、下記の式1に示す広防風グリコシドA、とそれを含む広防風根抽出物製剤及びその調製方法に関する。この製剤は広防風根抽出物と薬用補助材からなる各種の内服製剤であり、その中の広防風根抽出物は広防風の根部を水で抽出し濃縮してから得られたエキスであり、広防風グリコシドAが0.10~1.50%占める。本発明の広防風根製剤にはホルモンがないので、服用してから、プロゲストゲンを追加で使用して不良反応を予防する必要がない。臨床治療効果も著しく、品質も安定しており、コントロール性も安全性もよく、特に更年期の女性の長期服用に適する。