What is the mechanism of action of oral contraceptive pills ?

1. Decrease Gonadotropin release from pituitary leading to absence of FSH & LH peaks

2. Decrease Follicular development & ovulation

3. Thick cervical mucus hostile to sperms

4. Decrease Implantation of blastocyst in endometrium

5. Contractions of uterus & Fallopian tubes are modified

Dr. Ahmad Najmi, Index Medical College, Indore