Helimutt,
Worked Africa and Asia for many years. Took different anti malarials for over two years. By this time the whole lot of us were well and truly screwed up. Blood shot eyes, yellow skin and suffering, delicate stomachs (which I still suffer from many years later). We all gave up taking the tablets.
If taking Artemisinin, don't take it alone. Take it with the relevant anti malarial. The Plasmodium organisms are starting to become resistant to Artemisinin. Taking the anti malarials helps to prevent this.