This mantara is said to be beneficial for mental, emotional and physical health and to be a moksha mantra which bestows longevity and immortality.
According to some puranas, the Mahamrityunjaya Mantra has been used by many Rishis as well as Sati during the time when Chandra suffered from the curse of Prajapati Daksha. By reciting this mantra, the effect of the curse of Daksha, which could make him die, slowed, and Shiva then took Chandra and placed it upon his head.
This mantra is addressed to Lord Shiva for warding off untimely death. It is also chanted while smearing Vibhuti over various parts of the Body and utilised in Japa or Homa (havan) to get desired results. While its energy protects and guides the initiates a mantra re-links consciousness to its deeper and more abiding nature and repetition of the mantra constitutes Japa, the practice of which develops concentration that leads to a transformation of awareness. Whereas the Gayatri Mantra is meant for purification and spiritual guidance, the Mahamrityunjaya Mantra is meant for healing rejuvenation and nurturance.