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There have been suggestions that urine samples positive for benzoylecognine, the diagnostic metabolite of cocaine, may be the result of consumption Mate de Coca, a commercially available tea made from coca (Erythroxylon coca) leaves.
The Jockey Club in Great Britain commissioned research into this subject as several jockeys have tested positive for benzoylecognine over the past few years. Urine samples collected at various time points within 24 h after ingestion of a 250 ml infusion of Mate de Coca tea were analysed using three different methods. All samples tested positive for benzoylecognine.
(Br J Sports Med 2005;39:e37) http://bjsm.bmjjournals.com/cgi/content/full/39/9/e37
Objective: To report a case of exertional hyponatraemic encephalopathy that occurred despite a modest rate of fluid intake during a 109 km cycling race.
Methods: Men and women cyclists were weighed before and after
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- Time for tea, anyone?
- M Turner, P McCrory, A Johnston
Br. J. Sports Med. 2005 39: e37.[Abstract] [Full Text] [PDF]
- Hyponatraemic encephalopathy despite a modest rate of fluid intake during a 109 km cycle race • Commentary
- J P Dugas, T D Noakes, P B Laursen
Br. J. Sports Med. 2005 39: e38.[Abstract] [Full Text] [PDF]
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