The present invention relates to a pharmaceutical composition comprising the combination of (i) at least one biocompatible nanoparticle and of (ii) at least one pharmaceutical compound to be administered to a subject in need of such a pharmaceutical compound wherein the nanoparticle potentiates the pharmaceutical compound efficiency. The longest dimension of the biocompatible nanoparticle is typically between about 4 and about 500 nm its absolute surface charge value is of at least 10 mV (10 mV) and its Young modulus is less than 100 kPa. The invention also relates to such a composition for use for administering the pharmaceutical compound in a subject in need thereof wherein the at least one nanoparticle and the at least one pharmaceutical compound are to be administered in the subject between more than 5 minutes and about 72 hours one from each other.