estrogen
2 interactions related to estrogen
estrogen + dong quai
Dong quai (Angelica sinensis) shows estrogen-agonist activity in vitro and promotes growth of estrogen receptor-positive breast cancer cells. Combining it with prescribed estrogen therapy may add unwanted estrogenic stimulation, and dong quai's coumarin content increases bleeding risk in patients also on hormone therapy with VTE risk.
estrogendong quaiangelica sinensishormone replacementphytoestrogenbreast cancermenopauseherbal interaction
smoking + oral contraceptives
Smoking while using estrogen-containing oral contraceptives synergistically increases the risk of serious cardiovascular events including myocardial infarction, stroke, and venous thromboembolism. The risk is especially pronounced in women over 35 and increases with the number of cigarettes smoked.
smokingoral contraceptivesbirth controlcardiovascularthrombosisstrokemyocardial infarctionestrogencontraindicationwomen's health