Zingiber cassumunar Roxb. (Bangle), Guazuma ulmifolia Lamk. (Jati belanda), and Murraya paniculata (Kemuning) have been used as slimming agents in jamu. A few researches have performed studies on their potency as antiobesity. The aim of this research was to investigate the potency of Z. cassumunar rhizome, G. ulmifolia, and M. paniculata leaf extracts as antiobesity agent based on in vitro inhibition activity of the extracts on pancreatic lipase activity. In this research, water content determin