Reprint of Are all estrogens the same?
In summary, no convincing evidence has been found that the estrogens mentioned differ qualitatively. Obviously quantitative differences are present due to differences in e.g. receptor affinity, metabolism (half life) and route of administration (transdermal/vaginal).
Maturitas. 2008 Sep-Oct;61(1-2):195-201.
Originally posted 2009-05-15 13:46:41.