Botanical Name: Ptychopetalum olacoides Plant Part Extracted: Stem with Bark Contains: Certified organic grain alcohol, distilled water & Muira Puama extractives. Description: We prepare our Muira Puama Extract from the stem of Ptychopetalum olacoides shrubs which are Custom WildcraftedT in their native wild habitat in the Amazon region of Brazil. To assure optimal extraction of Muira Puama's bioactive compounds, the main stem (with bark) of the plant is hand-harvested and carefully sun-dried, and is then shipped directly to our laboratory for thorough extraction. Our Muira Puama is never fumigated or irradiated. .