Estro Suppress supplement used by bodybuilders contains breast cancer drug tamoxifen, observe experts.
Researchers have said that bodybuilders use anabolic steroids which causes breast enlargement and to keep this in check such people take tamoxifen. The team of researchers from Liverpool John Moores University bought four samples of the supplement and found tamoxifen in three of these samples. And they said the drug is being used for past 30 years.
The team told the British Medical Journal (BMJ) that it was not clear whether Esto Suppress at the moment available in market contained tamoxifen or not as their analysis was carried out two years ago.
But they warned, "Since the 2000s, a growing number of off-the-shelf 'food', ' herbal' or 'dietary supplements' - aimed at gym-goers and people wanting to lose weight or enhance their sex lives - have contained pharmacologically active substances (including anabolic steroids, stimulants and appetite suppressants)."
Researchers said most of the users do not even know that they are using this drug. They have urged physicians to question patients on the use of supplements because some problems in body might be a side effect of tamoxifen.
This drug lowers the level of estrogen hormone in the body. In breast cancer patients, it lowers the amount of estrogen and inhibits tumour growth.