<p>Drospirenone is a Progestin-only pill which is a synthetic form of progesterone. The hormonal component of Drospi inhibit ovulation by Suppressing gonadotropin release, Secondary mechanisms, which may contribute to the effectiveness of Drospi as a contraceptive, include changes in the cervical mucus (which increase the difficulty of sperm penetration) and changes in the endometrium (which reduce the likelihood of implantation). Drospirenone has antimineralocorticoid activity, counteracting oestrogen related sodium retention. Drospirenone exerts antiandrogenic activity.</p>