Patient's question:
Please ask if taking the birth control pill (Yuting) will result in one menstrual period, and if this is normal? If you choose long-term (regular) birth control pills, which type should you select? How should you take them?Doctor's answer:
Hello, birth control pills can cause menstrual irregularities. Currently, the commonly used long-acting birth control pills include the following types:(1) Injectable birth control injections (referred to as No. 1 birth control injection): This is a type of birth control medication dissolved in oil. It is actually a compound injection of norethisterone enanthate containing estrogen and progestogen, or a simple progestogen injection. The advantage of a simple progestogen is that it does not contain estrogen, making it suitable for breastfeeding women. It is stored in fat tissue and released slowly, providing long-acting effects. It prevents ovulation to achieve contraception. The first use can involve injecting 2 doses on the 5th day of the menstrual cycle, or 1 dose on the 5th day and another on the 12th day. Subsequently, 1 dose is injected on the 10th–12th day of each menstrual cycle. Generally, menstruation occurs 12–16 days after starting the medication. One injection provides contraception for one month, with an effectiveness rate of 98.59%.
(2) Long-acting birth control tablets: These are compound tablets made from estrogen and progestogen. They contain the synthetic long-acting estrogen questran. After absorption through the gastrointestinal tract, the drug is stored in fat tissue and released slowly, achieving long-acting contraception by inhibiting ovulation. Generally, the first dose is taken on the 5th day of the menstrual cycle, and the second dose is taken on the 10th day. Subsequently, two doses are taken each month. Menstruation usually occurs 6–12 days after starting the medication.
(3) Birth control pills are placed in silicone rubber capsules and implanted under the skin, utilizing the drug's slow and sustained release to achieve long-term contraception. One implantation can provide contraception for 6 months to 3 years.