(WADA), as are other aromatase inhibitors, because they may be used to counteract the side effects of anabolic steroids. Letrozole itself is not a performance enhancer.

Contraindications

Letrozole is contraindicated in women having a pre-menopausal hormonal status. Precautions are advised against becoming pregnant while using letrozole; on the loss of bone mineral density; on the increased level of cholesterol

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