It is the branch of Ayurvedic science that deals with various aspects of preventive health care. Rasayana Chikitsa includes longevity, improved memory, health, youthfulness, glow, complexion, generosity, and strength of body and senses. Rasayana improves the metabolic activities and results in best possible bio- transformation leading to health. Jara Cikitsa or Rasayana Tantra is the rejuvenating therapy, which promotes rejuvenation in a healthy person and cures the disease of a diseased person. This branch of Ashtang Ayurved aims at achieving a long and healthy life. The philosophy of Ayurved is to establish good health rather than just curing diseases. Rasayana is an active step towards achieving this. It prescribes treatment for repairing wear and tear of the body due to aging or diseases. It rejuvenates the tissues of the body to give a young look. Rasayana means that physical, mental and spiritual aid to the human body, which brings the body out of its condition of natural or man made loss. It claims that it retards the process of aging.
Rasayana-chikitsa basically boosts the ojas (vital force of life) and the immune system. It helps a person to maintain good health or to establish impaired or lost physical or mental health. Ojas gives a bright look, sharp memory, high performance and every expected pleasure. To achieve this state of health, intermittent regeneration of dhatu (body tissues) is recommended by ayurved. Rasayana chikitsa is the optimal way to achieve this. The Jara chikitsa regime comprises of a very strict diet. Amalaki, haritaki, trifala, brungaraj, ashwagandha, punarnava, chitraka are some examples of herbs that are called rasayanakar. The Rasayana medicines are believed to have aphrodisiac qualities. In short Rasayana chikitsa is rejuvenation and provides a long, disease free and vigorous life to the person who undergoes this therapy seriously it helps to bring life back to normal.