Thujone is a chemical found in wormwood (the popular name for several artemisia plant species) and other plants that is thought to have hallucinogenic or psychotropic properties. Wormwood comes in a variety of varieties that are used to flavor absinthe, bitters, vermouths, and bitter liqueurs. The most well-known variety is probably French sweet wormwood (Artemisia absinthium), which is responsible for the anise/licorice taste of absinthe. A less common type is German bitter wormwood (Artemisia abrotanum), which is used in making quassia bitters. Thujone can be used medically to treat colds, fever, and influenza. It also has antifungal properties that could be useful in treating fungal infections such as candidiasis. There are many myths surrounding thujone. It is not toxic; however, large amounts of thujone may cause nausea, vomiting, and diarrhea. Too much thujone may lead to hallucinations like those seen with cannabis, but it is not physically addictive like heroin or psychologically addictive like caffeine. There are two main types of thujone: alpha-thujone and beta-thujone. Alpha-thujone is the more active form and is only present in high concentrations in the leaves of French sweet wormwood.