A concentrated extract of the plant, sometimes called jambu oil or jambu extract, is used as a flavoring agent in foods, chewing gum, and chewing tobacco.[10][11][12][13] The oil is traditionally extracted from all parts of the plant.[10] EFSA and JECFA reviewed a feeding study in rats and both authorities recognized that the no adverse effect level for spilanthol was 572 mg/kg b.w./day, yielding a safe dose of spilanthol of 1.9 mg/kg b.w./day, or 133.5 mg/70-kg-male/day, 111 mg/58-kg-female/day, or 38 mg/20-kg-child/day.[12][13]