Abstract
Ketotifen fumarate and cyproheptadine HCl are the most popular prescription for children at “X” hospital in Yogyakarta. The interest for studying this divided powder was related to the stability test towards human health. Hence, it was important to developed a validated analytical method to quantify content of active drug from sample. In this study, a reversed phase HPLC (RP-HPLC) method was validated and applied for determining content of ketotifen fumarate and cyproheptadine hydrochloride in divided powder. The developed RP-HPLC method was met the requirement of selectivity and sensitivity. Calibration curve formulas of ketotifen fumarate and cyproheptadine hydrochloride were y = 27714x-79111 (r=0.9945) and y = 26324x+72581 (r=0.9935) in the range of 10.9-54.5 and 10.6-53.0 µg/mL, respectively. Accuracy and intermediate precision were assessed on both standard solution and samples spiked with standard solution of ketotifen fumarate and cyproheptadine hydrochloride. It was found that both standard solution and the spiked samples solution were met the requirement of recovery of 80-110% and RSD of less than 7.3% for intraday and interday analysis. Content of ketotifen fumarate and cyproheptadine hydrochloride in sample (n=7) were 16.574±0.098 and 30.640±0.035 µg/mL, respectively. It can be concluded that the RP-HPLC method was successfully validated and applied in the determination of ketotifen fumarate and cyproheptadine hydrochloride in divided powder.
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