Tamoxifen
Showing 1–12 of 76 results
Showing 1–12 of 76 results
Why tamoxifen is used outside oncology
Tamoxifen bodybuilding use comes down to two jobs: restarting suppressed testosterone production after a cycle, and addressing gynecomastia. Both follow from what the compound is — a selective oestrogen receptor modulator that blocks oestrogen at specific receptors rather than lowering how much of it is circulating. This section holds 76 lines from £20 to £144, clustered near £52.
Blocking is not lowering
| Tamoxifen (SERM) | Anastrozole (AI) | |
|---|---|---|
| Effect on blood oestradiol | Unchanged | Lowered |
| Mechanism | Occupies the receptor | Blocks the aromatase enzyme |
| Water retention | Not addressed | Addressed |
| Restarts LH and FSH | Yes | No |
This is the distinction that determines which one you need. Someone using tamoxifen to control bloating is using the wrong tool, because circulating oestradiol is unchanged — that is what the aromatase inhibitors are for, compared in anastrozole versus exemestane versus letrozole.
Selectivity, and why it matters
“Selective” means the compound behaves differently by tissue. It blocks in breast tissue, which is why it addresses gynecomastia. It blocks at the hypothalamus, which raises LH and FSH and restarts testicular output — the basis of its use in post cycle therapy. But it acts like oestrogen in bone and liver, which is why it does not damage bone density or lipids the way an aromatase inhibitor can.
On gynecomastia
Tamoxifen works on early, tender, developing tissue and can halt or reverse the process if caught quickly. It does not remove established glandular tissue — once the gland has formed and settled, no drug removes it and the question becomes surgical. That is why acting on the first sign of tenderness matters far more than the specific protocol chosen.
Where it sits against the aromatase inhibitors
The two classes are complements rather than alternatives. An aromatase inhibitor is the on-cycle tool, because it lowers circulating oestradiol and therefore addresses water retention and the blood pressure that follows. A SERM is the after-cycle tool, because blocking feedback at the hypothalamus restarts signalling — something no aromatase inhibitor does.
Running both together is common but they interact: tamoxifen alters the blood levels of some aromatase inhibitors. If you are using both, that is a reason for blood work rather than a fixed protocol. The inhibitors are compared on the exemestane page.
How it is stocked
Listings appear as Tamoxifen, Nolvadex, Tamoxifen Citrate, Altamofen, Tamoxi-Lab and Nolvamed at 10 mg and 20 mg strengths. Hilma Biocare, Pharmaqo Labs and Euro Pharmacies carry the deepest ranges. The compound is a prescription-only medicine in the UK rather than a controlled drug, so the offence structure differs from the anabolic compounds elsewhere in this catalogue.
Side effects worth knowing
Generally well tolerated at the doses used here, but not inert. Visual disturbance is uncommon and is a reason to stop rather than push through. Mood changes and reduced libido are reported, particularly at higher doses. The clinically significant one is raised clot risk, which matters to anyone with a personal or family history of thrombosis and is worth raising with a clinician rather than discovering. Nausea and hot flushes are common and usually settle within the first fortnight.
Frequently asked questions
Does tamoxifen boost testosterone in men?
Indirectly. By blocking oestrogen feedback at the hypothalamus it raises LH and FSH, which prompts the testes to increase their own production.
How much tamoxifen to shrink gyno?
Dosing is a clinical question and depends on how established the tissue is. What matters more is timing — early tender tissue responds, settled glandular tissue does not.
Is Nolvadex the same as tamoxifen?
Yes. Nolvadex was the original trade name; tamoxifen is the compound. Altamofen and Nolvamed are further brand names.
Why do bodybuilders use oestrogen blockers?
To manage the oestrogenic consequences of aromatising compounds and to restart suppressed production afterwards. Those are two different jobs needing two different drug classes.
Does tamoxifen lower oestrogen?
No — it blocks the receptor while leaving circulating oestradiol unchanged. An aromatase inhibitor is what lowers the level itself.
