The main scope of this proposal is the characterization of the dynamics of racemicibuprofen glass-forming liquid. Besides the alpha-relaxation, by means of both dielectricrelaxation spectroscopy and molecular dynamics simulations, a peculiar low amplitudeDebye type relaxation has been observed for the first time on such class of materials,explained by the latter to be linked to hydrogen-bonding molecular reorientation. Thisinvestigation is a new dynamical experience on a microscopic scale to the understanding ofthe origin of this Debye type relaxation, as well as of the hydrogen bonding influence inIbuprofen dynamics.