How long does one contraceptive injection last?

Generally, a single contraceptive injection can provide protection for 1 to 3 months. If the individual has a weaker physical condition and lower drug absorption capacity, its effectiveness may last only 1 to 2 months. Conversely, for those with better physical health and stronger drug absorption, it typically lasts 2 to 3 months. The exact duration varies among individuals. It is recommended to consult a professional physician before proceeding. Detailed explanations are as follows:

Contraceptive injections are a form of long-acting birth control that release estrogen and progestin into the bloodstream to prevent pregnancy, offering a relatively high level of contraceptive effectiveness. Individuals with poorer physical health and reduced drug absorption may experience a shorter duration of effectiveness, approximately 1 to 2 months. Those with better overall health and more efficient drug absorption may benefit from a longer duration, usually 2 to 3 months.

Using contraceptive injections is not entirely risk-free and may lead to contraceptive failure. Prolonged use might also cause adverse reactions such as menstrual irregularities, edema, hormonal imbalances, and other side effects including dysmenorrhea.

If considering contraceptive injections, it is advisable to visit a reputable hospital and proceed under the guidance of a qualified physician. Additionally, adopting appropriate contraceptive methods and avoiding unprotected sexual intercourse is recommended to safeguard overall health.