The combined estrogen-progestin oral contraceptive pill act mainly by:
Oral Contraceptives: OCP Mechanism Combined OCP(E + P) Inhibition of ovulation Progesterone Cervical mucus thick and hostile Emergency/Post coital/Morning after pills Dislodging of implantation
Production of cervical mucus hostile to sperm penetration
Making endometrium unsuitable for implantation
Suppression of FSH and LH release
Enhancing uterine contraction to dislodge the feilized ovum
Osteoporosis, Sex Hormones and OCPs