A Validated Green HPTLC Method for Quantitative Determination of Dapoxetine Hydrochloride and Tadalafil in Bulk and Pharmaceutical Formulations

Abstract Dapoxetine hydrochloride (DAP) and Tadalafil (TAD) were separated and determined quantitatively using a validated green high-performance thin layer chromatographic (HPTLC) method in their binary mixtures either as raw materials or in pharmaceutical formulations. The concentration ranges were 0.1–1.6 and 0.2–2.5 μg/band for dapoxetine and tadalafil, respectively, with accuracies of 98.93% ± 0.62 and 99.26% ± 1.39, respectively. Silica gel HPTLC F254 plates were used to carry out the separation. The mobile phase used was a mixture of ethanol–ethyl acetate (1:9 by volume), which is environmentally green and harmless. Densitometric scanning with UV detector was used to detect the separated peaks at 222 nm. ICH guidelines were followed to validate the suggested method, and the results prove that they can be used for regular analysis in quality control laboratories with compatible results.