Tamoxifen / Nolvadex – Proper Labs

Tamoxifen / Nolvadex Proper Labs for sale in the UK

Tamoxifen by Proper Labs is an oral tamoxifen citrate 20 mg tablet — the most widely used SERM in post-cycle therapy. Buy Nolvadex UK from a verified source: every batch is lab-tested and dispatched same working day from our UK warehouse.

What is Tamoxifen Citrate?

Tamoxifen citrate is a non-steroidal SERM developed in the late 1960s and approved for oestrogen-receptor-positive breast cancer. In bodybuilding it is repurposed for two jobs: restarting natural testosterone production after a cycle, and reversing active gynecomastia. It acts as an antagonist at oestrogen receptors in breast tissue and at the hypothalamus — blocking the negative-feedback loop that suppresses GnRH and restoring LH/FSH output, which signals the testes to resume testosterone synthesis. It is not an aromatase inhibitor and does not lower circulating oestrogen — it simply prevents oestrogen binding where it matters for gyno and HPTA suppression. Active half-life is 5–7 days, so once-daily dosing is sufficient.

Tamoxifen / Nolvadex benefits

• Restarts the HPTA after a cycle by restoring LH and FSH output
• Reverses active gynecomastia — outperforms AIs for established gyno
• Long 5–7 day half-life — simple once-daily dosing
• No liver toxicity, no aromatisation, no androgenic side effects
• Milder on mood than Clomid — often the first SERM users reach for

Nolvadex is the cornerstone of any responsible PCT plan and the default first response to gyno during a cycle.

Tamoxifen / Nolvadex dosage and cycle

Standard PCT (4-week 40/20): 40 mg/day weeks 1–2, then 20 mg/day weeks 3–4. Begin once the last ester clears — 2–3 weeks for enanthate/cypionate, 2–3 days for short-ester props, 12–24 hours after the final oral dose. Active gyno on-cycle: 20–40 mg/day until itching, lumps and tenderness resolve, then taper. Stacked PCT: run alongside Clomid (50/50/25/25 mg/day) for a stronger HPTA restart on heavier cycles. Once-daily dosing with food keeps blood levels stable.

Side effects and use notes

Tamoxifen is well tolerated. Possible effects include mild nausea, hot flushes, reduced libido during PCT and a temporary "flat" feeling that resolves as endogenous testosterone recovers. It does not aromatise and is not hepatotoxic. Coming off a 19-nor cycle (Deca, Tren, NPP), Nolvadex alone is not enough — those compounds are progestogenic, so an aromatase inhibitor such as Arimidex Proper Labs plus cabergoline for prolactin is sensible. For heavier cycles, an HCG bridge before SERM PCT helps restore testicular size.

Stacks well with

For most testosterone cycles, Tamoxifen is paired with Clomid 50 Proper Labs in a stacked four-week PCT — the two SERMs work synergistically on HPTA recovery. For an all-in-one combining tamoxifen, clomiphene and proviron, see PCT Tablets Proper Labs.

Frequently asked questions

How long does Tamoxifen take to start working?

LH and FSH usually begin recovering within the first 7–10 days of PCT, with libido and well-being following by week 2–3. For active gyno, itching and tenderness often improve within 1–2 weeks at 40 mg/day; established lumps can take 4–8 weeks to regress. End-of-PCT bloodwork is the only reliable confirmation.

Is Tamoxifen suitable for first-time users?

Yes — Tamoxifen is the default starter SERM and the simplest, best-tolerated PCT compound. Anyone running a first cycle should keep Nolvadex on hand for PCT and as emergency gyno response. Dosing is once daily and the 40/20 four-week protocol is straightforward.

Can Tamoxifen be detected on a drug test?

Tamoxifen is on the WADA prohibited list and is detectable in urine for several weeks after the last dose. It is not screened on workplace drug panels. Tested-federation athletes should avoid it inside the testing window.