Jayawardhana, W. W. Y. AGunaratna,M. J2026-09-272026-09-272026-05-02ISSN 1012 - 8999https://dr.ichemc.ac.lk/handle/123456789/518Abstract No: 2025_365 Page No 58Dillenia retusa Thunb. (Dilleniaceae) is an endemic Sri Lankan medicinal plant traditionally used to treat various ailments, including fever, nervous system disorders, oral diseases, anorexia, excessive thirst, dysentery, cough, burning sensations, and to promote hair health.enDillenia retusa Thunbα-amylase inhibitionα-glucosidase inhibitionglucose uptakeantidiabetic.Article