<p>Living healthy is the prime motto of this era but increased use of antibiotics and immuno- suppressive drugs, sedentary life, the quality of life get affected. Many kalpas have been described in Rasashastra for the conservation of immunity, physical and pshycological state of the body. In the field Rasayana, Gandhaka holds top after Parada. It possess ‘Katu’ rasa, ‘Ushna’ virya and Pachaka karma. Sudha Gandhaka when consume for many days with suitable adjuvant will provide good eye sight and improves jataragni. It is a good Rasyana also. Acharya Charaka has described Rasayana as a means to promote vigor and health which is mainly virilific and promotive of vitality. In the eighth chapter of Rasatarangini mentions 10 Gandhaka Kalpas. By judicious use of these kalpas, the person attains divyadrishti (sharp eye sight), suvarna kaya (golden radiance in the body), virya (high virility) and shaurya (physical strength) even in aged persons, vajra kaya (sturdy body), cures vali and palita roga (hair fall and hair greying), and also cures many of the chronic Kaphaja, Vataja and Pittaja rogas.</p>
Prajeeshnath E. N., NV, D. Ramesh, and Dr. Arun Mohanan, “An overview on Gandhaka kalpa and its rasayana effect”, Paryeshana International Journal of Ayurvedic Research (PIJAR), vol. I, no. II, 2016.