| abstract |
A method for preserving liposomes includes freeze-drying liposomes most preferably having an average size of about 50 nm to 100 nm with a disaccharide preserving agent being present both internally (with the encapsulated liposomal contents) and externally. The disaccharide component is in a weight ratio with respect to the lipid component of from at least about 0.1:1 to not greater than about 4:1 and is preferably trehalose. When the lyophilizates are reconstituted by rehydration, the resultant liposomes can retain up to 100% of the originally encapsulated contents. |