A method for preparing a non-fibrous porous material essentially consisting
of one or more hydrophilic polymers and/or pharmaceutical medicaments
comprising forming an aqueous solution, sol or gel comprising one or more
hydrophilic polymers and/or pharmaceutical medicaments, freezing the
solution, sol or gel and extracting the frozen water selectively using a
hydrophilic organic solvent being miscible with water at a temperature
below 5.degree. C. at which temperature the solvent is not able to
dissolve the frozen solutes, leaving the non-fibrous material in a solid,
porous form.