Liposomes
are result of self assembly of phospholipid in an aqueous media
resulting in closed bilayered structures. Liposomes are one of unique
drug delivery system which can be use in controlling and targeting drug
delivery system. Liposomes are generally classified based upon
structure, method of preparation, composition and application,
conventional liposome, and specialty liposome. Liposomes are formulated
and processed to differ in size, composition, charge and lamellarity,
depending upon method of preparation either active loading technique or
passive loading technique. The prepared liposomes are characterized for
visual appearance, liposomal size distribution, lamillarity, liposome
stability, entrapped volume and surface charges. Different marketed
formulations are available in market for liposomes. The liposomes have
many applications which increase its importance over other formulations.
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SOURCE: PHARMATUTOR.ORG