Abstract

Do you like to drink a cup of Earl Grey tea to soothe your nerves? Well, don't drink too much of it. A case report in The Lancet describes a man who developed neurological symptoms after switching from black to Earl Grey tea. The patient, who consumed up to 4 litres of the bergamot-scented beverage per day, complained of muscle cramps, fasciculations and blurry vision, which were attributed to the K+ channel blocking effects of bergapten, a component of bergamot oil. After excluding other pathologies, the treating physician advised the patient to reduce his intake of Earl Grey tea, which made the symptoms disappear. [Finsterer, J. (2002) The Lancet 359, 1484] AB

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