The present invention refers to A pharmaceutical composition comprising (i) poloxamer 407, (ii) at least one penetration enhancer, (iii) at least one solubilizing agent selected from the group consisting of cyclodextrins, hydrophilic polymers and mixtures thereof, (iv) at least one biologically active substance, and (v) a vehicle comprising water and a C 1 -C 3 alcohol, or mixtures thereof.
