This review highlights the pharmacology, biological properties and traditional uses of a very important folklore medicine, known as ‘Keeda jadi’. In nature, it is found at high altitudes of 3500-5000 m on the high Himalayan mountains in India, Nepal and Tibet. It is an entomo-fungal combination of a larva of small moth, Hepialus armoricanus and a parasite fungus Cordyceps sinensis. Cordyceps is best known medicine for increasing physical stamina and sexual functions. It has been traditionally used to treat patients with heart disease and also shown to increase liver, kidney and lung functions. C. sinensis is unique and valuable for its medicinal properties. Many studies support that it has diverse biological activities and pharmacological potential, while it is not extracted sustainable in planned way. So, awareness and scientific knowledge is very necessary for the future prospects of Cordyceps such as conservation, sustainable harvesting, cultivation practices and trade.