Ethinylestradiol
Composition
Contains Ethinylestradiol, a synthetic estrogen commonly used in combination with progestins.
Indications
Used in combined oral contraceptives, hormone replacement therapy, treatment of menstrual disorders, and acne (in females).
Side effects
Nausea, breast tenderness, headache, mood changes, increased risk of thromboembolism.
Precautions
Use with caution in patients with cardiovascular risk factors, liver disease, or history of hormone-sensitive cancers.
Contraindications
Active thromboembolic disorders, liver disease, hormone-sensitive cancers, undiagnosed vaginal bleeding, pregnancy.
Dosage and administration
Typically 20–35 mcg daily in combination pills taken cyclically (21/7 or 24/4 regimens).
Countries
Available Forms
Oral tablets (in combination), transdermal patches (with progestins), and rarely as part of injectables.