The present invention relates to electrospun fibres containing: i) a first and a second hydrophilic fibre-forming polymer that is soluble in a hydrophilic solvent, ii) a bioadhesive substance that is slightly soluble in said hydrophilic solvent, iv) a drug substance, wherein the first hydrophilic polymer has a solubility in water at 37°C that is at least times greater than the solubility in water at 37°C of the second hydrophilic fibre-forming polymer, and wherein the bioadhesive substance is present in solid form.
