Tamoxifen Citrate (Nolvadex) 20 mg

Tamoxifen Citrate (Nolvadex) 20 mg is Hilma Biocare's selective oestrogen receptor modulator, supplied as 50 tablets. It blocks oestrogen activity in breast tissue and is one of the most important endocrine medications ever developed.

What Tamoxifen 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. In hormone research it is used for oestrogen management and recovery support. The 20 mg tablet is the classic Nolvadex strength.

The History of Nolvadex

Tamoxifen was synthesised in the 1960s by Imperial Chemical Industries and initially investigated as an anti-fertility agent. It failed in that role but proved effective in breast cancer, and it was approved in the 1970s as Nolvadex. Landmark trials such as NSABP B-14 established its role in adjuvant therapy, and it became the first targeted endocrine therapy for breast cancer. It remains on the World Health Organization's list of essential medicines.

How It Works

Tamoxifen binds oestrogen receptors and prevents oestradiol from activating them in breast tissue. In the hypothalamus and pituitary, it can block oestrogen feedback and raise gonadotropins, depending on the hormonal context. It is metabolised in the liver by cytochrome enzymes into active metabolites with long half-lives. That metabolism is why genetic variation in CYP2D6 can affect its activity.

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 metabolism story is another major theme: genetic variants that reduce conversion to endoxifen may affect outcomes, although clinical trials of genotype-guided dosing have been inconclusive. Those three areas, bone, endometrium and metabolism, dominate long-term tamoxifen research.

Strength, Pack and Authentication

The pack contains 50 tablets of 20 mg each, sealed in moisture-resistant blister strips inside a printed carton. The carton states the compound, strength and tablet count, and a scratch-off security code inside the box can be verified against Hilma Biocare's records. Each tablet delivers a consistent 20 mg dose.

Buying Nolvadex Online

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