This site is intended for healthcare professionals

Sign in
Go to /sign-in page

You can view 5 more pages before signing in

Types

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

Authoring team

There are three main endogenous oestrogens:

  • oestrone (estrone E1)
    • formed from oestradiol in a reversible reaction
    • predominant form of circulating estrogen after menopause
    • oestrone is also a product of the peripheral conversion of androstenedione secreted by the adrenal cortex

  • oestradiol-17beta (estradiol E2)
    • primarily produced by theca and granulosa cells of the ovary
    • predominant form of oestrogen found in premenopausal women

  • oestriol (estriol E3)
    • oestrogen the placenta secretes during pregnancy
    • also is the peripheral metabolite of oestradiol and oestrone
    • is not secreted by the ovary

Oestradiol is the most potent oestrogen; it has double the efficacy of oestrone and ten times the efficacy of oestriol. It is in equilibrium with the more concentrated oestrone. Oestrone is in equilibrium with its sulphated form.

Synthetic oestrogens include:

  • ethinyloestradiol
  • oestradiol valerate
  • mestranol
  • stilboestrol

Related pages

Create an account to add page annotations

Create a free account

Annotations allow you to add information to this page that would be handy to have on hand during a consultation. E.g. a website or number. This information will always show when you visit this page.

The content herein is provided for informational purposes and does not replace the need to apply professional clinical judgement when diagnosing or treating any medical condition. A licensed medical practitioner should be consulted for diagnosis and treatment of any and all medical conditions.

Connect

Copyright 2024 Oxbridge Solutions Limited, a subsidiary of OmniaMed Communications Limited. All rights reserved. Any distribution or duplication of the information contained herein is strictly prohibited. Oxbridge Solutions receives funding from advertising but maintains editorial independence.