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Tamoxifen (Nolvadex) 20mg - 100 Tablets

★★★★★ 4.8 · 5 reviews SKU PH3
$149.00
In stock — dispatches within 24h, tracked

Tamoxifen (Nolvadex) 20mg is a selective estrogen receptor modulator (SERM) used to block estrogen activity in certain tissues and support the treatment of estrogen sensitive conditions. Each pack contains 100 tablets.

Format100 Tablets
Concentration20mg
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Ships from within Canada; No Customs
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Tamoxifen Citrate is a selective estrogen receptor modulator (SERM) with one of the most extensively documented clinical histories of any pharmaceutical compound. FDA approved since 1977 and remaining among the most studied SERMs across oncology and endocrinology research literature. This formulation delivers 20mg per tablet in a 100 count format, double the tablet supply of CSD’s F40 Biotech Nolvadex 20mg 50 tablet listing at identical compound and concentration, providing extended research supply continuity suited to longer duration protocols or laboratories maintaining standing Tamoxifen inventory across ongoing HPG axis and estrogen modulation research programs.

The 100 tablet format serves a distinct procurement purpose from the 50 tablet presentation. For research protocols examining Tamoxifen’s HPG axis restoration activity across extended observation windows where the compound’s CYP2D6 dependent Endoxifen conversion and tissue selective estrogen receptor modulation are being evaluated across multiple weeks. The 100 tablet supply eliminates mid protocol restocking and ensures consistent compound source quality across the full research timeline from a single procurement. For laboratories running multiple simultaneous Tamoxifen research protocols across different experimental groups, the higher tablet count provides a practical bulk sourcing option without committing to separate procurement events for each protocol cycle.

Tamoxifen’s core pharmacological profile remains consistent with CSD’s F40 Biotech 50 tablet listing, tissue selective SERM activity producing estrogen receptor antagonism at the hypothalamic pituitary axis and breast tissue while exerting partial agonist effects at bone and liver, CYP2D6 prodrug activation to the high affinity metabolite Endoxifen, and well documented HPG axis stimulation through hypothalamic estrogen receptor blockade driving increased LH and FSH secretion. The 100 tablet format and generic brand sourcing represent the primary differentiating variables from the F40 Biotech presentation; base compound, concentration, and pharmacological activity remaining identical across both listings.

Every batch of CSD’s Tamoxifen is third party lab tested for concentration accuracy and purity before being made available, with COA documentation available on request. Canada Steroid Depot has supplied Canadian customers with consistently verified, accurately dosed research compounds for years, and our SERM range across Tamoxifen, Clomiphene, and Enclomiphene represents comprehensive estrogen receptor modulation research coverage from a single verified Canadian supplier. All orders ship discreetly across Canada in plain, unmarked packaging with no identifying information on the exterior.

Store in a cool, dry place away from direct light and heat. Intended for research purposes only.

Commonly researched alongside Clomiphene and HCG in comparative SERM and HPG axis restoration studies. Browse CSD’s full PCT range for complete sourcing.

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4.8
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★★★★★ Anonymous Verified buyer 2026-03-20

Very nice worked perfectly legit source!

★★★★☆ Hugo Verified buyer 2025-07-20

Shipping time ok product to early to tell

★★★★★ Mustafa Verified buyer 2025-06-16

★★★★★ Aaron Verified buyer 2025-05-25

Fast shipping. Product definitely feels legitimate.

★★★★★ Justin Prokopetz Verified buyer 2025-05-20

Quality gear

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Frequently asked questions

Tamoxifen citrate is a prescription selective estrogen receptor modulator (SERM) commonly associated with the Nolvadex brand name. It interacts with estrogen receptors in a tissue selective manner and is particularly known for blocking estrogen activity in breast tissue. Each tablet provides 20mg of tamoxifen, with 100 tablets supplied per package.

Tamoxifen is used for the treatment of several forms of estrogen receptor positive breast cancer, including early and metastatic disease. It is also used following treatment of ductal carcinoma in situ (DCIS) to reduce the risk of invasive breast cancer and may be prescribed to reduce breast cancer incidence in certain women considered at high risk.

Tamoxifen binds to estrogen receptors and alters estrogen responsive signaling. In breast tissue it acts predominantly as an estrogen antagonist, limiting estrogen driven stimulation of hormone sensitive cells. Its effects vary between tissues, which is why tamoxifen is classified as a selective estrogen receptor modulator rather than a pure estrogen blocker.

Tamoxifen primarily works by binding to estrogen receptors and modifying estrogen signaling. Aromatase inhibitors such as anastrozole, letrozole, and exemestane instead reduce estrogen synthesis by targeting the aromatase enzyme. Both approaches can reduce estrogen related signaling, but they act through different mechanisms.

Tamoxifen has important risks that require medical supervision, including venous thromboembolism such as deep vein thrombosis and pulmonary embolism, stroke, and changes to the endometrium including an increased risk of endometrial cancer and rare uterine sarcoma. The appropriate balance of benefits and risks depends on the patient's indication and individual medical history.

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Tamoxifen (Nolvadex) 20mg - 100 Tablets

Tamoxifen (Nolvadex) 20mg - 100 Tablets