采用恒温加速试验法，对新塔花胶囊及糖衣片稳定性进行了动力学实验研究，实验数据经统计学处理及作图东算．在室温（25℃）条件下一以总黄酮为指标，拟定本品有效期为t0.9≥2a。 Constant temperature accelerated test method was used to study the kinetics of the stability of Xintahua capsules and sugar-coated tablets. The experimental data were statistically processed and graphed to the east. At room temperature (25 °C) under conditions of total flavonoids as an indicator, the proposed period of validity of this product is t0.9 ≥ 2a.