Artemisia absinthium

Safety & Hazards

The essential oil in this plant contains thujone. Thujone is a GABA receptor antagonist which allows neurons to fire more easily. In larger doses this can cause muscle spasms and convulsions, and can also be toxic to brain, kidney, and liver cells. There has been a lot of negative press regarding thujone, particularly in the mid 19th century when thujone was reported to be more dangerous than alcohol - since shown to be exaggerated; and reports in the 1970’s that it might have a similar effect on the brain to THC (found in cannabis) – since found to be incorrect. Thujone is probably best known for its use in the alcoholic drink ‘Absinthe’. It is also found in the essential oils of many other plants that are used in herbal medicines and foods, including Arborvitae (Thuja species), some Junipers (Juniperus species), Wormwoods (especially Artemisia absinthium) and Sage (Salvia officinalis). There are some legal restrictions in various countries on the quantity of thujone that can be added to foods and drinks and these vary between countries. Side effects from consuming thujone can include sleeplessness and anxiety but, unless the pure essential oil is used, the quantity of thujone found in plants is well within safety levels. Pregnant women, however, may be advised to restrict their use of thujone-containing plants. The plant is poisonous if used in large quantities[ 20 Title Companion Planting for Successful Gardening. Publication Author Riotte. L. Publisher Garden Way, Vermont, USA. Year 1978 ISBN 0-88266-064-0 Description Fairly good. , 61 Title A Dictionary of Plants Used by Man. Publication Author Usher. G. Publisher Constable Year 1974 ISBN 0094579202 Description Forget the sexist title, this is one of the best books on the subject. Lists a very extensive range of useful plants from around the world with very brief details of the uses. Not for the casual reader. ]. Even small quantities have been known to cause nervous disorders, convulsions, insomnia etc[ 222 Title A Field Guide to Medicinal Plants. Eastern and Central N. America. Publication Author Foster. S. & Duke. J. A. Publisher Houghton Mifflin Co. Year 1990 ISBN 0395467225 Description A concise book dealing with almost 500 species. A line drawing of each plant is included plus colour photographs of about 100 species. Very good as a field guide, it only gives brief details about the plants medicinal properties. ]. Just the scent of the plant has been known to cause headaches and nervousness in some people[ 169 Title A Weavers Garden Publication Author Buchanan. R. Publisher McGraw-Hill Contemporary Year 1987 ISBN 0934026289 Description Covers all aspects of growing your own clothes, from fibre plants to dyes. ].