Estriol is a gentle estrogen.
Estriol has 1/8th the potency of the main estrogen, E2 or estradiol.
Estriol is so gentle it can be given to gentlemen, too.
Estriol signals the second estrogen receptor, ER Beta, about 80-90% of the time.
ER Beta is the anti-cancer, anti-inflammatory, growth-controlling, myelin boosting, gut wall “tightening” estrogen.