Artemisinin, or Qinghaosu, is 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..Research has shown artemisinin to be particularly beneficial in balancing the microbiology of the GI tract.
Allergy Research Group introduced artemisinin to the U.S. market more than three decades ago. Independent cell tests have verified its effectiveness, and they do independent potency assays on every batch, using HPLC. Allergy Research Group artemisinin is minimum 98.5% pure, and does not contain thujone.