Hi shrestha, Welcome to HCM, I have read your query, Revital is a comprehensive mixture of vitamins, minerals and ginseng. Ginseng is a herbal extract, normally used to added energy and well being. Its mixture rejuvenates and strengthens body organs and helps maintain excellent health. The dosage of necessary nutrients including vitamins A, B -complex, C, D and E, minerals and other trace elements cover the everyday requirements of a person. With the help of ginseng, vitamins and minerals, and increases the utilization of oxygen in your body to the normal levels. As a result, you won t experience the condition that is typical to tiredness, weakness and fatigue. Ginseng has been actively researched in various parts of the world where it is taken as food supplement for improving the vitality of systems in the body. Will recommend to also alter your food timings and eat healthy diet and consult your physician before taking any therapy. Thanks