Among all the herbal preparations in India, Chyawanprash is most famous. It may be the world's most popular rejuvenating tonic. Chyawanprash has the consistency of jam and contains 20-80 herbs and spices, including the all important tropical gooseberry, Amla (Embellica Officinalis), the world's richest natural source of vitamin C. In clinical trials in India, it demonstrated significant radioprotective properties. It also supports the immune system and protects the body against everyday infections that cause coughs, colds, and fevers. It can be used by children, old persons, tubercular patients, and debilitated persons.