ABSTRACT
Objective To establish the HPLC method of assay for diphenhydramine hydrochloride in compound diphenhydramine cream. Method HPLC analysis was carried on ACE5C18S/N-A66766 column (150 mm×4.6 mm, 5 µm) with the mobile phase of methanol-water-triethylamine (70:30:0.67, adjusting pH to 6.50 with phosphoric acid) at room temperature. The detection wavelength was set at 230 nm and the flow rate was 1.0 ml/min. The analyte was extracted from the cream and 20 μl of sample was injected. Results The calibration curve of diphenhydramine hydrochloride was linear in the range of 39.52-197.6 µg/ml (r=0.999 7). The average recovery of diphenhydramine hydrochloride was 100.5% (RSD=1.25%, n=9). The repeatability of the method was expressed using RSD with 0.78% (n=6). The results of assay were 101.3%, 99.83% and 99.62%. Conclusion The method is accurate, sensitive, selective and repeatable, which can be applied for improving the quality standard of compound diphenhydramine cream.
ABSTRACT
Objective Through the statistics of drug consumption in the task of Harmonious Mission -2018, sort out the process of medication supply of overseas medical services, analyze and evaluate the medication supply services. Methods Count the types and quantities of medicines consumed by marine hospitals in the Harmonious Mission-2018, analyze whether the preparation of medicines is sufficient, effective, and economically reasonable, and find way to improve the process of medicine supply in overseas medical services. Results Statistics on the consumption of drugs in the Harmonious Mission-2018 show that the number of drugs consumed accounted for 68.21% of the total kinds of medicine carried, that the total amount of drugs consumed accounted for 40.61% of the total costs of medicine carried, and that the total number of boxes of drugs consumed (the number of the smallest packages) accounted for 21.72% of the total number of boxes of medicine carried. Conclusion The medicine support services in the Harmonious Mission-2018 was sufficient and effective. But, the workflow and the processes of the services still need to be further improved.