Rasashastra and the Modernization of Metallic Medicine: A Toxicological and Therapeutic Review of Ancient Alchemical Science in Contemporary Pharmacological Contexts

Abstract

Abstract

Rasashastra—the branch of ?yurveda that formulates metallic and mineral drugs—has fascinated clinicians and regulators alike.?This review contextualises classical bhasma (calcined metal/ore preparations) within modern pharmacology, systematically examining purification (?odhana) and incineration (m?ra?a) as risk?mitigation technologies rather than mystical rites. Recent analytical studies reveal nanoparticulate lattices, protein coronas, and remarkably low bio?available heavy?metal fractions in well?prepared bhasma.?Toxicological data, though limited, suggest a safety window distinct from that of raw metals; conversely, counterfeit and under?processed products carry clear hazards.?Therapeutic promise is strongest for herbo?metallic combinations used in anaemia, chronic infections, oncology?supportive care, and metabolic disorders, but evidence remains heterogeneous.?We argue that Rasashastra’s future hinges on Good Manufacturing Practices (GMP), nanometrology, multi?omics toxicity profiling, and ethically designed clinical trials that align with contemporary regulatory frameworks while preserving Indic epistemology.

Keywords:Rasashastra; Bhasma; Metallic Nanomedicine; Ayurvedic Pharmacology; Heavy?Metal Toxicology; ?odhana; M?ra?a; Nano?toxicology; Herbo?metallic Formulations