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Bodybuilding supplements
Is the breast cancer drug tamoxifen being sold as a bodybuilding dietary supplement?
BMJ 2014; 348 doi: https://doi.org/10.1136/bmj.g1476 (Published 13 February 2014) Cite this as: BMJ 2014;348:g1476
- Michael Evans-Brown, scientific analyst1,
- Andreas Kimergård, visiting lecturer2,
- Jim McVeigh, deputy director2,
- Martin Chandler, human enhancement drugs researcher2,
- Simon D Brandt, reader in bioactive drug chemistry3
- 1European Monitoring Centre for Drugs and Drug Addiction (EMCDDA), Lisbon, Portugal
- 2Centre for Public Health, Liverpool John Moores University, Liverpool, UK
- 3School of Pharmacy and Biomolecular Sciences, Liverpool John Moores University, Liverpool, UK
- Michael.Evans-Brown{at}emcdda.europa.eu
For more than 30 years, bodybuilders have taken tamoxifen to prevent and treat gynaecomastia caused by use of anabolic steroids.1 2 3 Usually, tamoxifen is sourced from the illicit market. However, bodybuilding discussion forums have speculated that a dietary supplement called Esto Suppress contains tamoxifen because the label listed one of its chemical names (figure⇓). Four samples were purchased at different times between late 2011 …
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