When to take short-acting contraceptive pills

Jun 24, 2025 Source: Cainiu Health
Dr. Zhang Lu
Introduction
Begin taking the combined oral contraceptive pill on the first day of menstruation. The medication can promptly exert its hormone-regulating effects, rapidly inhibit the ovulation process, and achieve effective contraception within the same month of administration, without the need for additional contraceptive measures. This approach is suitable for individuals seeking immediate contraception. Furthermore, taking the pill at this time helps regulate the menstrual cycle more effectively and reduces the occurrence of menstrual irregularities.

Generally speaking, short-acting contraceptive pills are usually started on the first to the fifth day of the menstrual period. The detailed explanation is as follows:

Starting short-acting contraceptive pills on the first day of the menstrual period enables the medication to promptly exert its hormone-regulating effects, rapidly inhibiting the ovulation process. The contraceptive effect can be effectively achieved within the same month of taking the medication, without requiring additional contraceptive measures. This method is suitable for individuals seeking immediate contraception. Moreover, taking the pills at this time helps regulate the menstrual cycle more regularly, reducing the occurrence of conditions such as menstrual disorders.

If short-acting contraceptive pills are started on the second to fifth day of the menstrual period, contraceptive effectiveness can still be achieved. However, due to the relatively later start of medication, it may be necessary to simultaneously use barrier contraceptive methods, such as condoms, within the first 7 days after starting the pills, to ensure reliable contraception. This approach is suitable for situations where the opportunity to take the pill on the first day of menstruation is missed but contraception is still required. Although additional contraceptive measures are needed initially, regular intake of the pills afterward can still maintain a stable contraceptive effect.

Before taking short-acting contraceptive pills, one should consult a doctor first to confirm whether their health condition is suitable. It is essential to strictly follow the prescribed timing and dosage, avoiding missed or discontinued doses. If any adverse symptoms occur, prompt medical attention should be sought.

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