Preliminary experimental studies on evaporation of Gengnian'an liquid extract of traditional Chinese medicine(TCM)with vapor-liquid-solid flow boiling technique were carried out in a transparent natual circulating three-phase evaporator.

Ninety patients were classified randomly into two groups: sixty cases of the treated group by Yipi Ninggeng Decoction, 30 cases of the controlled group by Gengnian An Tablets.

Determination of Emodin in Gengnian an Capsules by HPLC;

Objective: To establish the quality standard for Gengnian an capsules.

Clinical observation on the therapeutic effect of GengNianAnYi Tablet on postmenopausal osteoporosis;