If so, by how much? This would be of importance to those patients who have had an oestrogen-dependant breast cancer, wanting to keep the blood level of oestrogen as low as possible - post menopausally. Also, does it react with Arimedex?
Estring should not be used by patients who have had a history of breast cancer.
Estring contains estradiol, a form of estrogen. Although it is used topically (in the form of a vaginal insert) there will still systemic absorption, enough to raise blood levels of estrogens.
For more information on Estring see:https://www.drugs.com/cdi/estring-ring.html
Estrogen containing medications should not be given along with Arimidex.
Estrogens negate the effects of Arimidex.
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