[1][2] The 11th-century Persian scholar Abū Rayhān Bīrūnī noted an Indian science named Rasāyana, focused on restoring health and rejuvenation through plant-derived medicines.
In contemporary times, rasāyana remains relevant through modern formulations combining herbal wisdom and scientific knowledge, reflecting a continued pursuit of well-being and vitality.
[6] From the 14th century onwards, many materials from rasāyana and rasaśāstra were translated and integrated in the Persian texts written by Muslim scholars in South Asia.
[7] Rasayana therapy enriches rasa with nutrients to help one attain longevity, memory, intelligence, health, youthfulness, excellence of luster, complexion and voice, optimum development of physique and sense organs, mastery over phonetics, respectability and brilliance.
The historical aims of rasāyana were diverse, but the effects attributed to a treatment were typically either longevity, health, intellect, sexuality or magical abilities.
Because of negative publicity and cost factor, the use of the classical rasayana formulas has declined considerably, and most of the preparations available now have herbal ingredients with a couple of mineral and animal products.