The combined estrogen-progestin oral contraceptive pill act mainly by:
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
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
Osteoporosis, Sex Hormones and OCPs