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Abstract
Laurel Clock Vine (Thunbergia laurifolia Lindl.): A Detoxifying Herb
Anchalee Chuthaputti*
*Institute of Thai Traditional Medicine, Department for Development of Thai Traditional and Alternative Medicine,
Ministry of Public Health, Nonthaburi 11000

Laurel clock vine (Thunbergia laurifolia Lindl.), or “rang jued” in Thai, is a well-known medicinal plant
in Thai traditional medicine used for its detoxifying property. Based on the classical textbook of Thai tradi-
tional medicine, the leaf juice is taken for the relief of fever and for detoxifying and antidotal purposes. Thai
researchers have long been interested in this particular activity of the herb and preclinical and clinical re-
search to prove its efficacy has been conducted for the past 30 years. The results obtained from those studies
so far and the history of its use in many community hospitals for more than 10 years have led to the selection
of this herb for inclusion on the List of Herbal Medicinal Products of the National List of Essential Medicines
(2nd edition) B.E. 2554 (2011) as an item of developed herbal medicine in the Herbal Hospital Formularies.
This review article is aimed at providing information and research results on this herb so that readers could
make informed choices on the use of this herb, and on its safely and effecacy.
Key words: Laurel clock vine, blue trumpet vine, Thunbergia laurifolia, detoxifying, antidote