Sweet myrtle

Acorus calamus (calamus root, sweet flag, rat root, sweet sedge, flag root, sweet calomel, sweet myrtle, sweet cane, sweet rush, beewort, muskrat root, pine root) contains several active constituents called asar-ones. The basic structure is 2,4,5-trimethoxy-l-propenyl-benzene, which is related to the hallucinogen 3,4-methylenedioxyphenylisopropylamine (MDA). The amounts of the asarones in calamus rhizomes vary considerably with the botanical variety. For example, there are high concentrations in triploid calamus from Eastern Europe but none detectable in the diploid North American variety. 

Ruscus aculeatus (butcher s broom, knee holy, knee holly, knee holm, Jew s myrtle, sweet broom, pettigree) has been used topically for vasoconstrictor treatment of varicose veins and hemorrhoids (15), and for chronic venous insufficiency, both alone (16,17) and in the combination known as Cyclo 3 fort, marketed in France, which contains an extract of R. aculeatus 150 mg, hesperi-din methyl chalcone 150 mg, ascorbic acid 100 mg, and metesculetol. 

Exposure to the general population may occur by inhalation due to its presence in the atmosphere as a result of its release from natural sources. Studies have measured levels in both outdoor air and in the indoor air of residences. D-Limonene emissions to the environment have been associated with many plants, for example, wax myrtle, sweet acacia, oranges, tomatoes, grasses, and California western sagebrush. 

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