Herbal drugs comprises of a vast array of active contents which furnishes us with a number of applications. But due to high polarity and poor lipophilicity the active contents are poorly absorbed resulting in poor bioavailability. This problem can be overcomed by formulating a suitable novel preparation of the herbal extract. The Phytosomes approach has the improved pharmacokinetic profile obtained without resorting to pharmacological adjuvant or structural modification of the ingredients. Phytosomes are recent advanced forms of herbal formulations that have enhanced absorption rate, producing better bioavailability than conventional herbal extracts. The paper provides details of the formulation methodology for phytosomes and describes their chemical and biological properties. The characterization and evaluation technologies used for phytosomes offers insight into different techniques helpful in screening various parameters of phytosomes. The advantages of phytosomes over conventional and liposomal drug delivery systems are also discussed. Thus, in this paper, a complete overview of phytosome technology has been provided for the benefit of the researchers interested in this field.
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