What are they?
Oral hormonal contraceptives, or birth control pills, are a safe and effective method to temporarily prevent pregnancy. They contain small amounts of female hormones — estrogen and progesterone — which work by preventing ovulation, thereby eliminating the risk of pregnancy.
Additionally, birth control pills cause changes in the cervical mucus, making it thicker so that sperm cannot pass through it.
There are two main types of oral hormonal contraceptives:
21/7 tablets: The cycle begins by taking the first pill on the day menstruation starts. After finishing the 21 active pills, a 7-day break follows. A new cycle begins on the 8th day, regardless of menstrual bleeding.
24/4 tablets: The first pill is taken on the day menstruation starts. After finishing the 24 active pills, four placebo pills (without active ingredients) are taken to maintain the daily routine. Once all 28 tablets are completed, a new pack is started the next day — regardless of bleeding.