Assistant Professor, CT Institute of Pharmaceutical Sciences,
Phytosomes are little cell like structure which are also termed herbosomes which are formed by complexation of the polyphenolic phytoconstituents in molar ratio with phosphatidylcholine. Bioavailability of flavonoid containing phytomedicines, is reported to be low and erratic due to limited absorption, elevated presystemic metabolism and rapid elimination. But their phytosomal formulations show improved absorption, enhanced delivery and increased bioavailability of phytochemicals than the conventional herbal extracts containing dosage forms. Phytosome technology has been effectively used to enhance the bioavailability of many popular herbal extracts e.g. milk thistle, grape seed, green tea, hawthorn, etc. The improved pharmacokinetic and pharmacological properties of phytosomes make them suitable for the treatment of serious degenerative disorders. This article reviews the recent trends and applications of various herbal extract phytosomes as a tool of drug delivery system and as an emerging technology for increasing bioavailabity of phytoconstituents.