Rog Nashak Yantra should be installed and worshipped when a person is facing an acute health problem causing fatal danger to his life or if he is regularly unhealthy due to which he is not able to achieve Success and Peace in life. The main Yantra in this Maha Yantra is Maha Mrityunjaya Yantra whose controlling deity is Lord Shiva. Lord Shiva is the conqueror of Diseases and Death and hence worshipping of this Yantra is very remedial in chronic as well as acute diseases. The other 12 Yantras in this Maha Yantra helps to erase the Vastu Dosha of the residence where the person is living as well as to pacify the natural harmful planets and a few major Doshas of the horoscope like Vastu Dosha etc. This Yantra not only helps in providing relief in several health problems but at the same time, it also improves the quality of life by making a person mentally and physically strong due to the blessings of Lord Ganesha, Lord Hanuman, Goddess Durga whose Yantras are also combined in this Maha Yantra. The worshipper is also safeguarded against all Evil Energies and Evil forces by the blessings of Goddess Maha Kali.