Wu C, Zhou Z, Zhao H
Hua Xi Yi Ke Da Xue Xue Bao. 1995 Dec;26(4):443-6.
Paracetamol (P), caffeine (C) and ephedrine hydrochloride (EH) are there physiological active component in Likeshu capsules. We have proposed the determination method of these three components using extractive separation-spectrophotometry. Only one amount weighed of sample is required to determine them. The recoveries of P, C and EH were 97.51 +/- 0.64% (n = 9), 98.24 +/- 1.04% (n = 8) and 98.58 +/- 1.09% (n = 9) respectively. The results of determination of samples agreed with those of the HPLC method. This method is sensitive, accurate and simple. The other ingredients of Likeshu capsules do not interfere.
力克舒胶囊中含有对乙酰氨基酚（P）、咖啡因（C）和盐酸麻黄碱（EH）这三种生理活性成分。我们提出了采用萃取分离-分光光度法测定这三种成分的方法。只需称取一份样品量即可对它们进行测定。P、C和EH的回收率分别为97.51±0.64%（n = 9）、98.24±1.04%（n = 8）和98.58±1.09%（n = 9）。样品的测定结果与高效液相色谱法的结果一致。该方法灵敏、准确且简便。力克舒胶囊中的其他成分不产生干扰。
