Abstract
Background: Cinnarizine is used to treat nausea and vomiting accompanied by motion sickness. Dimenhydrinate is used in the treatment of nausea and vomiting and dizziness. The coformulation of the two drugs showed the lowest rate of adverse effects compared to single dimenhydrinate. Objective: A fully validated ultra-performance liquid chromatographic method has been conducted for the simultaneous estimation of cinnarizine (CIN) and dimenhydrinate (DIM). Materials and Methods: The UPLC method used Acquity Column as stationary phase and mobile phase methanol: buffer (pH = 3.5 ± 0.05) and acetonitrile in the ratio of 50: 25: 25 at a flow rate of 0.2 mL/min. Detection was performed by DAD at 260 nm. Results and Discussion: Retention time was 0.71 and 1.12 min for DIM and CIN, respectively. The linearity was found to be 1-40 μg/mL and 2-80 μg/mL for CIN and DIM; respectively. Conclusion: The method was appropriately used for the quantitation of both drugs in pure form, synthetic mixtures and tablet preparation.
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