The Gut-Agni-Vitamin D Axis: An Integrative Review of Siddha Tikshnaagni (Digestive Fire) and Vitamin D Bioavailability. International Journal of Ayurveda and Pharma Research, [S. l.], v. 14, n. 6, p. 263–269, 2026. DOI: 10.47070/ijapr.v14i6.4244. Disponível em: https://ijapr.in/index.php/ijapr/article/view/4244. Acesso em: 13 sep. 2026.