Mechanism of action of oral contraceptive containing a combination of oestrogen-progestin is
The mechanism of action of the combined oral pill is mainly to prevent ovulation This is achieved by blocking the pituitary secretion of gonadotropins that is necessary for ovulation to occur Reference: Park&;s textbook of preventive and social medicine, 23rd edition, Page no: 501
Inhibition of ovulation
A change in the cervical mucus
Inhibition of motility of the uterine tubes
Inhibition of motility of sperms
Demography and family planning