• Estrogenic and serotonergic butenolides from the leaves of Piper hispidum Swingle (Piperaceae) 

      Michel, Joanna L.; Chen, Yegao; Zhang, Hongjie; Huang, Yue; Krunic, Aleksej; Orjala, Jimmy; Veliz, Mario; Soni, Kapil K.; Soejarto, Djaja Doel; Cáceres, Armando; Pérez Sánchez, Alice Lorena (Journal of Ethnopharmacology 129(2): 220–226, 2010)
      Ethnopharmacological relevance: Our previous work has demonstrated that several plants in the Piperaceae family are commonly used by the Q’eqchi Maya of Livingston, Guatemala to treat amenorrhea, dysmenorrhea, and pain. ...