Tamoxifen is a potent anti-oestrogen in the class of selective oestrogen receptor blockers. For athletes, that marks it out as a sensible pick for sustained use through the SCT period. Tamox was first developed for mainstream medicine, where it remains in use today, particularly in oncology. From there it moved quickly into athletic circles, and it has stayed in the toolkit for decades.
The appeal is twofold: Tamoxifen effectively inhibits oestrogen activity, and it also pushes along the body’s own testosterone production by acting on the pituitary axis. Both qualities are useful across rehabilitation therapy after a steroid withdrawal. Still, running Tamoxifen on-cycle isn’t the strongest choice for every athlete.
The reason — drugs of this class don’t affect the speed of the aromatisation process itself. They cut the activity of female hormones, but leave the concentration untouched. While on AAS, it is the sharp rise in oestrogen levels that drives gynaecomastia and side effects of that kind, so an aromatase inhibitor often reads better during the cycle itself.
Effects of Tamoxifen
The main positive qualities:
- Can restart the pituitary axis;
- Prevents heavy fluid retention in the body;
- Inhibits the activity of female hormones;
- normalises the balance of lipoprotein structures.
The modest price of Tamoxifen only adds to its appeal.
Tamoxifen rules of application
The dosing scheme is simple. 20-40 mg of Tamoxifen a day is the standard. Most of the time, the minimum dose does the job. Duration depends on how heavy the cycle was — the harder the compounds and the longer the run, the longer Tamoxifen tends to stay on afterwards.
Tamoxifen also brings one more useful quality — it can clear away the full consequences of gynaecomastia. The symptoms of this condition tend to stack over time. If an athlete lets them show up again and again, at some point surgery is the only route left. A combined course of Tamox and Proviron run on-cycle usually keeps that outcome at bay.
But in amateur bodybuilding, the need for that combined course rarely comes up. The reason is simple enough — amateur bodybuilders don’t often run heavy courses.








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