KnowraEthinylestradiolLinked fromLinked fromThe 3 pages that link to Ethinylestradiol, each with the reason it gives.All 3Broader topic 1Related 1Compared with 1Combined oral contraceptive pillBroader topic: It is the estrogen component in many, though not all, combined pills.Oral contraceptive pillRelated: It is the estrogen component of many combined oral contraceptive pills.EstriolCompared with: Its synthetic structure and contraceptive use contrast with estriol’s usual clinical role.