雌二醇+屈螺酮（Ethinylestradiol + Drospirenone）
Overview
Ethinylestradiol + Drospirenone is a combined oral contraceptive pill used to prevent pregnancy. It is also used to treat moderate acne and premenstrual dysphoric disorder (PMDD).
Mechanism of Action
It prevents pregnancy primarily by suppressing ovulation. Drospirenone also has anti-androgenic and anti-mineralocorticoid properties, which help reduce acne and water retention.
Dosage and Administration
One tablet is taken daily at the same time for 21 or 24 days, followed by a 7- or 4-day hormone-free interval (placebo pills or pill-free days), during which withdrawal bleeding occurs.
Side Effects
Common side effects include nausea, breast tenderness, headache, mood changes, and irregular bleeding. It carries a small but significant risk of venous thromboembolism (blood clots).
Contraindications
Contraindicated in women with a history of deep vein thrombosis, pulmonary embolism, stroke, severe hypertension, liver disease, or estrogen-dependent tumors.
The medication usage, medical information, and related content provided on this website are for general informational purposes only. Under no circumstances should they be considered a substitute for professional medical advice, diagnosis, or treatment plans. Users must consult a registered doctor, pharmacist, or other qualified healthcare professional before making any medical decisions. Never disregard professional medical advice or delay in seeking it because of something you have read on this website. Do not use the information provided here to self-diagnose or treat any health issues or diseases.
Statement on Information Sources and Objectivity
The medical information and content presented on this website are based on widely recognised medical knowledge and public literature, and have been retrieved, translated, and compiled with the assistance of artificial intelligence (AI) tools. Details regarding disease symptoms, drug indications, mechanisms of action, and side effects are objective medical facts intended purely for general public education and reference.
Limitation of Liability
This website, and those who operate it, accept no legal liability for any of the following:
- Any direct or indirect consequences arising from a user's use of, or reliance on, the information provided on this website.
- Any adverse reactions, side effects, or other impacts resulting from the use of medications or treatments mentioned on this website.
- The accuracy, completeness, or timeliness of the information provided on this website (including content retrieved and compiled via AI).
If you are experiencing a medical emergency, please seek immediate professional medical assistance or call emergency services.
