Tamox 20 (Tamoxifen Citrate 20 mg)

Tamox 20 (Tamoxifen Citrate 20 mg) is Evolve Biolabs' selective oestrogen receptor modulator, supplied as 50 tablets in sealed blister strips. It blocks oestrogen activity in breast tissue and is one of the most important endocrine medications ever developed.

What Tamox 20 Is

Tamoxifen is a non-steroidal SERM that binds oestrogen receptors and acts as an antagonist in breast tissue while having partial agonist effects in bone and the endometrium. It is a prodrug: the liver converts it into metabolites such as endoxifen that are far more potent at the receptor. Tamox 20 supplies the classic 20 mg strength across 50 tablets.

The History of Nolvadex

Imperial Chemical Industries synthesised tamoxifen in the 1960s while searching for an anti-fertility drug. That indication failed, but the compound proved effective against breast cancer and reached the market as Nolvadex in the 1970s. NSABP B-14 and related trials secured its place in adjuvant therapy, making it the first targeted endocrine treatment for the disease. It is still listed among essential medicines.

How It Works

Tamoxifen occupies oestrogen receptors and stops oestradiol from activating them in breast tissue. In the hypothalamus and pituitary the same binding can interrupt feedback and raise gonadotropin output, depending on the hormonal setting. Hepatic cytochrome enzymes convert it into active metabolites that persist for long periods, and variation in CYP2D6 activity is one reason responses differ between individuals.

What the Research Shows

• NSABP B-14 established tamoxifen as adjuvant therapy for early breast cancer.
• Large overviews show reduced recurrence and improved survival with long-term use.
• Trials have examined its effects on bone density and endometrial tissue.
• Research on CYP2D6 metabolism has clarified variability in response.

Research Context

Tamoxifen research extends well beyond breast cancer. Studies have examined its effects on bone mineral density, where it acts as a partial agonist and can preserve bone in postmenopausal women, and on the endometrium, where partial agonism is associated with an increased risk of endometrial changes. The CYP2D6 story is another major theme: genetic variants that reduce conversion to endoxifen may affect outcomes, although genotype-guided dosing trials have been inconclusive. Bone, endometrium and metabolism dominate the long-term literature.

Strength, Pack and Authentication

Each tablet contains 20 mg of tamoxifen citrate USP, with 50 tablets per pack. The tablets are sealed in moisture-resistant blister strips inside a printed, tamper-evident carton stating the compound, strength and tablet count. A verification code on the packaging can be checked against Evolve Biolabs' records, and the blister strips keep each tablet protected until use.

Buying Tamox 20 Online

Nolvadex is one of the most searched SERMs. If you are researching tamoxifen citrate, comparing 20 mg Nolvadex-style products or looking to buy Tamox 20 online from a verified Evolve Biolabs supplier, this page gives you the full specification, pack size, price and live stock status. Browse more Evolve Biolabs hormone-support products at NotNatty.