Artemisia annua – also known as sweet wormwood, sweet annie or sweet sagewort – is known for its antiviral, antibacterial and antiparasitic properties. This herb eases the symptoms of colds, flu and fever. It contains artemisinin which is also found in antimalarial medications. Research indicates cancer fighting properties as well, such as helping to treat leukemia and cancers of the breast, colon, lung and pancreas.