Role of Nasya in Vata Vyadhi (neurological disorders): A critical narrative review

Background: Nasya Karma which is one among the Panchakarma, has got an important role in the management of Urdhvajatrugata Vikara. Ayurvedic classics also describe the dissemination of Nasya Dravyas (drugs) through Shringataka Marma and various channels, indicating its potential for systemic action including Vata Vyadhi. Objectives: To highlight specific Ayurvedic formulations for Nasya and exploring its role in managing Vata Vyadhi. Methods: A critical manual review of classical Ayurvedic texts, including Brihattrayi, Laghutrayi and various Uttarkalina Samhitas for Nasya in Vata Vyadhi revealed 74 different entries. All 74 indications are analysed according to different formulations in various Vata Vyadhi w.s.r. to neurological disorders. Results: Out of 74 formulations, 30 formulations are mentioned in Brihattrayi and Uttarkalina Samhita each, followed by 14 Yoga in Laghutrayi. Maximum formulations i.e. 64 are of Sneha Kalpana, out of which 53 are of Tail followed by 9 of Ghrita, 1 of Vasa and Majja each. In addition to Sneha Kalpana, 5 of Swarasa, 3 of Kwatha, 1 formulation each of Churna and Sheetal Jala is mentioned. Conclusion: The analyzed classical references support the potential of Nasya in the management of Vata Vyadhi w.s.r to neurological disorders. Specifically, the results indicate the potential of Snehana Nasya in the management of various Vata Vyadhi, as formulations having Sneha predominance are repeatedly mentioned across different Ayurvedic texts.