Prati Marsha and Marsha Nasya are the types of saneh nasya i.e in which saneh is administered through the nostrils. There is just a difference in dose between them.
- Marsha Nasya (मर्श नस्य): This type of Nasya is administered in bahu dosha avastha/बहुदोष अवस्था (vitiated doshas) and the drugs used here are clarified butter, oils, etc in saneh from. It can be administered all the time except in durdin/दुर्दिन (rainy day when sun is covered with clouds).
- Prati marsh Nasya (प्रतिमर्श नस्य): This Nasya can be administered throughout life. It is very beneficial just like marsh nasya. The dose of marsh Nasya is 2 drops in each nostril (Total 4 drops). Acharya Charaka said that this type of Nasya never build complications. It should be given two times a day in the morning as well as in the evening. It does not enhance the doshas and nourishes the mind as well as the body.