All of Herb Pharm's Liquid Herbal Extracts are prepared according to precise Good Manufacturing Practices and with individualized formulations or processes, which enable each herb to be extracted according to its own unique physical and biochemical characteristics. This attention to detail produces a finished extract, which optimally represents the herb from which it was made. Herb Pharm's extracts are very rich in the aroma, taste and bioactive compounds of the original herbs themselves. They use pharmaceutical-grade, certified organic alcohol to make over 80% of their liquid herbal extracts.Herb Pharm's Propolis Extract is prepared from the bee-collected resin known as Propolis (Resina propoli). Honeybees harvest the crude resin from wild-growing trees, process it, and store it in their hives. The Propolis is then carefully collected from the honeybee hives and thoroughly extracted to produce this richly aromatic Propolis Extract.