From Hindupedia, the Hindu Encyclopedia

By Swami Harshananda

Nādiśuddhi literally means ‘purification of the naḍis’.

Nāḍīśuddhi means the purification of the nāḍīs, tube-like structures in the body. They have to be cleansed by certain processes before practicing prāṇāyāma. Works on Haṭhayoga describe two types of nāḍi-śuddhi:

  1. Samanu with bījamantras
  2. Nirmanu without such mantras

The latter is done by practicing various dhautis.[1] The former is the usual prāṇāyāma comprising the three stages, they are:

  1. Puraka - inhalation
  2. Kumbhaka - retention of breath
  3. Recaka - exhalation

It is done in the proportion of 16:64:32 seconds, using such bījamantras as yarn, rari and lain.[2] Of course, it goes without saying that these practices should be done under the direct supervision of a competent guru.


  1. Dhautis means cleansing processes.
  2. Gheranda Samhitā 5.33-45
  • The Concise Encyclopedia of Hinduism, Swami Harshananda, Ram Krishna Math, Bangalore