Estrone (E1) is what your body makes after menopause.

Estradiol (E2) is the primary form of estrogen in your body during reproductive years (the most potent form of estrogen).

Estriol (E3) is formed in your body during pregnancy.

Estrone (E1) is what your body makes after menopause.

Estradiol (E2) is the primary form of estrogen in your body during reproductive years (the most potent form of estrogen).

Estriol (E3) is formed in your body during pregnancy.

Estrone (E1) is what your body makes after menopause.

Estradiol (E2) is the primary form of estrogen in your body during reproductive years (the most potent form of estrogen).

Estriol (E3) is formed in your body during pregnancy.

Estrone (E1) is what your body makes after menopause.

Estradiol (E2) is the primary form of estrogen in your body during reproductive years (the most potent form of estrogen).

Estriol (E3) is formed in your body during pregnancy.