Highest Contraceptive failure is repoed in: (A) Spermicidal methods, (B) Implant, (C) Oral contraceptive pills, (D) IUD
Answer is A. - Spermicidal methods has pearl index of 10-25 / HWY ( Highest ). - Contain chemical - Non oxynol 9 - MOA - By rupture of plasma membrane of Acrosomal cap.