2D structure · PubChem CID 2733525Tamoxifen citrate

ZionovaPost cycleSKU ZionovaNolvadex

Zionova Nolvadex

Tamoxifen citrate · Oral tablet

5.0 from 4 reviews

$120CAD

In stock, ships from Vancouver

Strength20 mg per tablet

Pack50 tablets

Total per order1,000 mg

Half-life≈ 5-7 days

Add $180 more for free Xpresspost.

Also in a kit · 10% offPost-Cycle Shelf5 items · $391.50See kit Mass Reserve13 items · $996.30See kit

Delivery guaranteeLost or seized: reshipped free
Tracking in 72 hPacked in Vancouver
Interace-TransferFrom any Canadian bank
Plain packagingNo product names outside

Overview

Nolvadex is tamoxifen citrate, a selective estrogen receptor modulator (SERM) used for decades to treat and prevent breast cancer.

How it works

Tamoxifen blocks estrogen at the breast and the hypothalamus while acting like estrogen in bone and liver. Blocking it in the brain raises LH and FSH, which is why it is studied for male hormone recovery.

Chemistry

From PubChem, the US National Library of Medicine’s chemistry database.

Tamoxifen citrate

Formula: C₃₂H₃₇NO₈
Molecular weight: 563.6 g/mol
CAS: 54965-24-1
PubChem CID: 2733525 ↗

Clinical reference

For breast cancer the label amount is 20 mg a day. In men, doctors prescribing it off-label for gynecomastia or low testosterone usually use 10 to 20 mg a day.

Label and guideline amounts are shown for reference only. They are not a recommendation, and we never give cycle or performance amounts. Any use belongs under a doctor’s care, with bloodwork.

Measuring calculator

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Strength used: 20 mg per tablet · pack: 50 tablets

Combinations and interactions

Prescribed or used alongside

Sometimes prescribed with or instead of clomiphene after testosterone therapy stops, guided by LH, FSH and testosterone bloodwork.

Drug interactions

Warfarin: markedly stronger effect; the combination needs close INR monitoring.
Some antidepressants (paroxetine, fluoxetine, bupropion): block the enzyme that activates tamoxifen.
Aromatase inhibitors: the combination is not used in breast cancer.

Risks and bloodwork

Blood clots

Tamoxifen raises the risk of deep vein thrombosis and pulmonary embolism.

Vision

Rare cataracts and retinal changes.

Hot flushes

Common.

Uterine changes

In women, a higher risk of uterine cancer.

Bloodwork doctors check

Estradiol (sensitive assay)
Total and free testosterone
LH and FSH
Lipid panel and liver enzymes

Not for

People under 18, anyone pregnant or breastfeeding, and anyone with liver disease, heart disease, uncontrolled blood pressure or a hormone-sensitive cancer, unless a doctor directs otherwise.

Canadian legal status

In Canada this is a prescription drug under the Food and Drugs Act. Using it under a doctor’s care, with bloodwork, is how it is meant to be used. This is general information, not legal advice.

References

Tamoxifen in men: a review of adverse eventsWibowo E et al. · Andrology, 2016 · PMID 27152880
Role of tamoxifen in idiopathic gynecomastia: A 10-year prospective cohort studyMannu GS et al. · Breast J, 2018 · PMID 30079473
Anabolic steroid-induced hypogonadism: diagnosis and treatmentRahnema CD et al. · Fertil Steril, 2014 · PMID 24636400

Reviews

5.04 reviews from customers

Reviews are published after a quick check. Only customers who bought this product can review it.

MattVerified buyerJul 7, 2026

Rated without a written review.

AnonymousVerified buyerOct 15, 2025

Rated without a written review.

Reply from SteroidsCanada.org

Thank you for the five stars on the Nolvadex!

AnonymousVerified buyerNov 27, 2024

Impressed with the results and quality !

Reply from SteroidsCanada.org

Thank you! We're glad you're happy with the quality of the Nolvadex.

Sean M.Verified buyerMar 19, 2024

Best product I have taken for estrogen control and the reason is the the high quality top notch product

Reply from SteroidsCanada.org

Sean, thank you! We're glad you're happy with the quality. Estrogen control works best guided by bloodwork, so keep testing as you go.

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FAQ

How long does tamoxifen last?

Its half-life is about five to seven days, longer for its active metabolite.

Tamoxifen or clomiphene?

Both are SERMs with different side-effect profiles; a doctor chooses based on bloodwork.

Is it an aromatase inhibitor?

No, it blocks the receptor rather than lowering estrogen.

How fast will it arrive?

Orders ship from Vancouver by Canada Post Xpresspost. You get a tracking number within 72 hours of payment; delivery then takes 1 to 2 business days in BC, 3 to 4 in Ontario and 3 to 5 in Quebec.

What if my parcel is lost or seized?

We reship it free. Contact us with your order number.

Adults 18+. This page is general information, not medical advice. Talk to a licensed healthcare provider before using any compound.