What is unique about drospirenone among COCs?

• A. It has anti-androgenic properties
• B. It increases blood pressure
• C. It acts as a mild potassium-sparing diuretic reducing bloating, PMS, and weight gain
• D. It is a high-dose estrogen

Answer: (C)

Drospirenone stands out among combined oral contraceptives because it has anti-mineralocorticoid activity, meaning it acts like a mild potassium-sparing diuretic. This reduces sodium and water retention, which helps lessen bloating, premenstrual symptoms, and perceived weight gain. While some progestins can worsen fluid retention, drospirenone’s diuretic-like effect counteracts that tendency, making these specific symptoms less pronounced for many users. It’s not about high estrogen dose or increasing blood pressure; in fact the diuretic action can modestly lower fluid-related symptoms. There is also anti-androgenic activity, which can help with acne, but the distinctive clinical takeaway tied to its unique property is the mild potassium-sparing diuretic effect that improves bloating, PMS, and weight gain.