An androgenic steroid from which testosterone and certain oestrogens are derived in humans.
- Androgenic products, namely androstenedione, are testosterone precursors, and transform to this hormone in the body.
- But all three substances - creatine, androstenedione, and anabolic steroids - increase a naturally occurring substance in the body to promote the building of muscle tissue.
- Examples of ergogenic aids are creatine, androstenedione, anabolic steroids, major pain medication, barbiturates, and amphetamines.
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