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Tamoxifen (Nolvadex)
Tamoxifen (Nolvadex) is a Selective Estrogen Receptor Modulator (SERM) used as PCT (Post-Cycle Therapy) after anabolic steroid cycles to restore natural testosterone production. It blocks estrogen receptors in breast tissue, preventing gynecomastia, and stimulates LH/FSH release to restart the HPTA (hypothalamic-pituitary-testicular axis).
- Also known as: Nolvadex, Tamoxifen Citrate, Nolva
- Form: oral
- Half-life: 5–7 days
- Typical cycle length: 4–6 weeks (PCT protocol)
- Typical dose (men): 20–40 mg/day during PCT
- Typical dose (women): Not applicable (medical use for breast cancer)
- PCT required: no
Dosing by experience level
| Level | Dose | Frequency | Notes |
|---|---|---|---|
| Standard PCT | 40mg/day weeks 1-2, then 20mg/day weeks 3-4 | Daily | Start 2 weeks after last long-ester injection |
| Gyno Prevention | 20 mg/day during cycle | Daily | Only if experiencing gyno symptoms |
Side effects
- Hot flashes
- Mood changes
- Reduced libido temporarily
- Vision changes (rare)
- Blood clot risk (rare)
Common stacks
- Clomid (Clomiphene)
- hCG (human chorionic gonadotropin)
- Anastrozole
Important notes
- Standard PCT medication after steroid cycles
- Often combined with Clomid for more complete HPTA recovery
- Start PCT timing depends on ester used
- Does not lower circulating estrogen — only blocks receptors in breast tissue
- Use Anastrozole/Aromasin on-cycle to lower estrogen