A Kalasarpa Dosha Nivaran Kavacha is worn to combat the ill effects of a kalasarpa dosha in the horoscope. This dosha is caused by the planets Rahu and Ketu. This dosha tends to encourage pessimism and frustration, as efforts of the person become fruitless. The kavacha is a power combination of three rudrakshas one mukhi, eight mukhi and five mukhi.