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Time for tea, anyone?
  1. M Turner2,
  2. P McCrory1,
  3. A Johnston3
  1. 1Centre for Health, Exercise and Sports Medicine, University of Melbourne, Australia
  2. 2The Jockey Club, 151 Shaftesbury Avenue, London WC2H 8AL, UK
  3. 3Barts and The London Hospital Trusts, London, UK
  1. Correspondence to:
 Dr Paul McCrory
 Centre for Health, Exercise and Sports Medicine, University of Melbourne, Australia;


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.

  • WADA, World Anti-Doping Agency
  • benzoylecognine
  • cocaine
  • drug testing
  • Mate de Coca

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  • Competing interests: none declared

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