What drug is an estrogen receptor antagonist?

Tamoxifen is a nonsteroidal estrogen receptor antagonist that is mainly used for the treatment of estrogen receptor-positive breast cancer.

What is estrogen receptor antagonists used for?

Estrogen receptor antagonists bind to estrogen receptors and inhibit the action of estrogen. Estrogen controls the growth of certain types of breast cancers called estrogen receptor positive cancers. So estrogen receptor antagonists are useful in treating patients with estrogen sensitive breast cancers.

What is an estrogen receptor agonist?

Highlights. Estrogen receptor (ER) agonists play crucial roles in the immune system and the CNS. Cell signaling pathways are modulated by ER agonists via binding to ERα and ERβ ER agonists can promote transcription of a large number of neuroprotective genes.

What happens if estrogen is blocked?

Having low levels of estradiol due to aromatase inhibitors (AI’s), or estrogen blockers like Arimadex and Femara, may lead to symptoms including: Sexual health disorders (ED, as well as low desire, libido and satisfaction). Prostate issues. Poor cardiovascular health.

What drugs are estrogen blockers?

Medications that stop the body from making estrogen after menopause

• Anastrozole (Arimidex). Anastrozole is used to reduce the risk of cancer recurrence in women who have been treated for early-stage breast cancer.
• Exemestane (Aromasin).
• Letrozole (Femara).

Is progesterone and estrogen antagonist?

PROGESTERONE has long been considered an antagonist of oestrogen action1. The delicate balance and interactions between these ovarian hormones are essential for many reproductive functions.

Which is an adverse effect of estrogen receptor antagonists?

Side effects of antiestrogens include hot flashes, osteoporosis, breast atrophy, vaginal dryness, and vaginal atrophy. In addition, they may cause depression and reduced libido.

Which drug is classified as an estrogen agonist antagonist?

The only estrogen agonists/antagonists that are currently US FDA approved for use in postmenopausal women are tamoxifen, toremifene and raloxifene. Tamoxifene and toremifene are FDA approved for the treatment of breast cancer and tamoxifen is also approved for the prevention of breast cancer.

What is a potential treatment for estrogen receptor positive breast cancer?

Endocrine therapy remains the mainstay of treatment for estrogen receptor-positive (ER+) breast cancer.

What are the side effects of anastrozole?

Anastrozole may cause side effects. Tell your doctor if any of these symptoms are severe or do not go away:

• weakness.
• headache.
• hot flashes.
• sweating.
• stomach pain.
• nausea.
• vomiting.
• loss of appetite.

What are the names of estrogen blockers?

Examples include:

• tamoxifen.
• anastrozole (Arimidex)
• letrozole (Femara)
• raloxifene (Evista)