A highly sensitive spectrofluorimetric method is developed for the determination of prucalopride succinate (PRU). The method depends on lanthanide-sensitized luminescence due to complex formation between the drug and terbium chloride (Tb+3) which is enhanced by the addition of 8 hydroxyquinoline (8HQ) and phosphate buffer (0.02 M, pH 3.2). The calibration curve was constructed over the linear range 10–300 ng/mL after excitation at 226 nm and measuring the emission of the ternary complex at 544 nm. The method was validated according to ICH Q2 (R1) guidelines and showed a good recovery ± RSD of 100.41% ± 1.26, the limits of detection and quantitation were found to be 2.81 and 8.53 ng/mL, respectively. The proposed method was successfully applied for the determination of the drug marketed tablet dosage form and the results were in good agreement with the reference method. Also, the method greenness was evaluated according to Complex-GAPI and analytical Eco-Scale.

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A new, simple and highly sensitive electrochemical method based on zirconium oxide nanoparticles modified carbon paste electrode (2 % ZrO 2 /CPE) was used for simultaneous determination of anthelmintics drugs Mebendazole (MB) and Levamisole HCl (LV) in drug substance, dosage form and human plasma. Differential pulse (DPV) and square wave (SWV) voltammetric analysis were applied in Britton Robinson buffer (pH 6; 0.04 M) after optimization of different analytical parameters. The studied drugs were measured simultaneously at very low concentration of analytes resulting in two wellseparated peaks. The detection limits were found to be 0.01 and 0.62 μM for MB and LV, respectively, using DPV and 0.01 and 0.42 μM for MB and LV, respectively using SWV.