The branch of rasayana or rejuvenation is one of the eight specialized branches of Ayurveda, which deals with the maintenance of
health and cure of disease, the two main objectives of Ayurveda. Ayurveda emphasizes on enhancement and promotion of energy,
covering entire aspect of individual with positive approach for life. Rasayana chikitsa is elaborately discussed in all Samhitas with
classification, mode of administration and benefits derived from each. Some classical rasayan formulasion contain a large number of
herbal ingredients with mineral and animal products, but some single herbal medicines are also used as rasayana. Medicinal properties
of rasona are described by Charaka1
but rasayana properties are described by Vagbhata.