CRITICAL ANALYTICAL REVIEW OF RASABHEDĪYA ADHYĀYA OF AṢṬĀṄGAHṚDAYA: AN APPRAISAL OF THE CONCEPT OF ṢAḌRASA AND ITS CLINICAL RELEVANCE

Abstract

Background: Rasabhedīya Adhyāya of Aṣṭāṅgahṛdaya is a fundamental chapter that systematically explains the concept of Ṣaḍrasa (six tastes) and their significance in Ayurvedic dietetics, pharmacology, and therapeutics. The principles described by Ācārya Vāgbhaṭa continue to serve as the foundation for understanding the actions of food and medicinal substances. Objective: To critically review the Rasabhedīya Adhyāya with special emphasis on the concept of Ṣaḍrasa, its pharmacological basis, therapeutic applications, and contemporary scientific relevance. Materials and Methods: A narrative critical review was conducted using classical Ayurvedic texts, including Aṣṭāṅgahṛdaya, Caraka Saṃhitā, Suśruta Saṃhitā, Aṣṭāṅga Saṅgraha, and Bhāvaprakāśa, along with published articles retrieved from indexed databases such as PubMed, Scopus, Google Scholar, and the Journal of Ayurveda and Integrative Medicine. Relevant literature was critically analyzed and synthesized. Results: The review highlights that each of the six tastes possesses a unique Mahābhūta composition, influencing Doṣa, Dhātu, Agni, and Mala. The chapter also explains Rasa Saṃyoga, the sixty-three taste combinations, and exceptions (Apavāda) that reflect the complexity of Ayurvedic pharmacology. Comparative analysis with other classical texts demonstrates conceptual consistency with distinctive clinical clarity in Aṣṭāṅgahṛdaya. Modern evidence from gustatory physiology, phytochemistry, nutrigenomics, and systems biology provides scientific support for several classical concepts. Conclusion: The Rasabhedīya Adhyāya presents a comprehensive and clinically relevant framework for understanding Ayurvedic pharmacology and nutrition. Its principles remain applicable to personalized medicine, rational drug selection, and preventive healthcare. Further interdisciplinary research is required to validate and expand the scientific basis of Rasa Siddhānta in contemporary clinical practice.