Oral contraceptives are pills that help prevent pregnancy and can delay the onset of a woman's period. A period is a naturally occurring event that happens each month and is proof that a woman is able to bear children. Norethisterone is a form of the hormone progestin, which will help prevent pregnancy by altering the lining of the uterus and making it thicker. The pills can also be used to prevent a period in the following month if taken at the correct time.
Check the instructions contained in the leaflet that accompanies your medication to find out about possible side effects and other information that is important to your health.
Take one Norethisterone pill on the day that your period begins, then take a single dose each day at the same time, if using the pill to prevent pregnancy.
Take one Norethisterone pill on the day that your period begins one month before you want to prevent your next period. Then, continue to take a single pill at the same time each day for the following month.
Avoid missing a dose entirely or taking a dose more than three hours later, but if you do, use a secondary method of birth control, if you are trying to avoid pregnancy.
Complete the entire prescription, which takes one month, then begin the next month's packet normally, taking a single pill 24 hours after the last dose in order to avoid interrupting the cycle.