<p>Dielectric spectroscopy is employed to elucidate the intermolecular interaction and transport dynamics in neem extract-paracetamol hybrid systems prepared in ethanol, over the temperature range 298.15–328.15&#xa0;K. The dielectric and electrical properties were determined for all the samples. Dielectric permittivity and loss exhibit a non-monotonic variation with paracetamol loading, attaining minimum values at an intermediate composition. Electric modulus spectra display composition-dependent relaxation behaviour with temperature-induced shifts of relaxation maxima. The AC conductivity shows a low-frequency dispersive region followed by a frequency-independent plateau and follows a Jonscher-type power law, with conductivity parameters and activation energies varying with composition. The results reveal composition-dependent changes in dielectric response in neem–paracetamol systems.</p> Graphical Abstract <p></p>