Health Dictionary
Reliable, easy-to-read patient information on common medical conditions — written in plain language, free of jargon, and grounded in current evidence. Browse the most frequent diagnoses, understand what they mean for everyday life, and learn which steps and questions help you have a focused conversation with your doctor.
Quinestrol
Introduction
Quinestrol® (ethinyl estradiol 3-cyclopentyl ether) is synthetic estrogen used in hormone replacement therapy, and occasionally to treat breast cancer and prostate cancer.