利福平滴眼液制备方法的改进

目的 :建立一种简易、准确地制备利福平滴眼液的方法。方法 :以计算量的盐酸溶解利福平 ,然后用等摩尔量的氢氧化钾中和 ,生成处方量的氯化钾。结果 :利用酸碱中和反应不但解决了利福平溶解困难和滴眼液的渗透压问题 ,还可避免以乙醇为溶剂而产生对眼睛的刺激性。结论 :本方法设计巧妙 ,制备简单 ,质量可控。

Improvement in Preparation Technique of Rifampicin Eye Drops

OBJECTIVE:To establish a simple and rapid preparation technique of Rifampicin eye drops.METHODS:The calculating quantity of hydrochloric acid was used to dissolve Rifampicin,then the equimol quantity of potassium hydroxide was added to neutralize the acid and yield potassium chloride,whose quantity was designed according to the prescripˉtion.RESULTS:Neutralization reaction not only overcame the difficulty of Rifampicin's dissolution in water,but also avoided the irritation to eyes caused by using ethanol as solvent.CONCLUSION:The method is well-versed in design,simple in preparation and controllable in quality.