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.
NutriCology? introduced artemisinin to the U.S. market more than a decade ago. NutriCology does independent potency assays on every batch (using HPLC), and independent tests verify its effectiveness. NutriCology artemisinin is minimum 98.5% pure, and does not contain thujone. For more information about quality of artemisinin, see High Quality Artemisinin.
As a dietary supplement, 1 or 2 capsules one or two times daily before meals, or as directed by a healthcare practitioner.