When using oral contraceptives for contraception, taking them according to regulations generally does not fail, but some women may also become pregnant after taking the medication, which makes them very worried. Let's talk about the reasons for contraceptive failure.
What are the reasons for contraceptive failure?
1. Failure to take medication according to regulations
Some women have not developed a regular medication habit and often miss out on medication. The duration of the short-term contraceptive effect should not exceed 24 hours. The short-term contraceptive pill should be taken from the fifth day of menstruation, taking one pill per day for 22 consecutive days to prevent pregnancy for a month. After menstruation exceeds 5 days, the pill should be taken
2. Contraceptive pills not properly stored
Most birth control pills are coated with sugar, and the ingredients of the pills are inside the coating layer. If the pills are damp, melted, or broken, the dosage of the pills will decrease, thereby affecting the contraceptive effect.
3. Obstacles in the body's absorption of contraceptive pills
Oral contraceptives are mainly absorbed and utilized through the gastric or intestinal mucosa. When taking contraceptives, vomiting or diarrhea can affect their absorption and utilization, resulting in failure.
4. Interference from other drugs
During the period of taking contraceptive pills, the body develops diseases and uses other drugs. Taking antibiotic drugs can inhibit the growth and reproduction of bacteria in the intestines. During the reproduction process, intestinal bacteria are prone to producing metabolic substances, promoting the absorption of contraceptive drugs in the intestines and stomach. When the growth of bacteria in the intestines and stomach is inhibited by antibiotics, the metabolic substances are correspondingly reduced, affecting the absorption of contraceptive drugs
How to take contraceptive pills to avoid failure?
1. Short contraceptive pills
There are two ways to take short birth control pills. The first method is to start taking one pill from the first day of menstruation, take one box every day, stop taking the medicine for a week, and then take another box. There is no need to take contraceptive measures during this period. The second is to take one tablet every day starting from the seventh day of menstruation, and stop taking it for a week after 21 consecutive days. For the first 7 days of taking medication, it is best to use a condom in the same room.
2. Emergency contraceptive pills
Emergency contraceptives are mainly taken within 72 hours after sexual activity. If taken for more than 72 hours, it will increase the failure rate, and emergency contraceptives can only be taken once within a menstrual cycle and should not be used frequently. Otherwise, it will cause serious harm to the body, leading to menstrual disorders and irregular vaginal bleeding in women.