Pure artemisinin or Qinghaosu, the active constituent of the herb Artemisia annua (sweet wormwood). Good quality Artemisia annua contains 0.3-0.5% artemisinin, so pure artemisinin provides hundreds of times more of the active constituent artemisinin than the whole herb itself.
Allergy Research Group introduced artemisinin to the U.S. market more than three decades ago. Independent cell tests have verified its effectiveness, and we do independent potency assays on every batch, using HPLC. Allergy Research Group artemisinin is minimum 98.5% pure, and does not contain thujone. For more information about quality of artemisinin, see High Quality Artemisinin.