Menstrual Induction Injections: FAQs and Success Rates - Obstetrics and Gynecology

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Menstrual induction injection issues?


Is it normal to have increased discharge the day after receiving a menstrual induction injection? What is the success rate of using the injection to induce menstruation when it is administered 13 days before the expected period (without knowing if ovulation has occurred)? I read online that if ovulation has already taken place, the success rate of using the injection to induce menstruation is low; is that correct? What is the typical dosage for menstrual induction injections?

bb, 20~29 year old female. Ask Date: 2019/12/06

Dr. Huang Jianzhong reply Obstetrics and Gynecology


Is it normal to have increased discharge the day after receiving a menstrual induction injection? Answer: Yes, it is normal.
Is the success rate high for using a menstrual induction injection to bring on menstruation within 13 days before the period (regardless of whether ovulation has occurred)? Answer: No, the success rate is not high.
I read online that if ovulation has already occurred, the success rate of using a menstrual induction injection to bring on menstruation is low; is that correct? Answer: Yes, that is correct.
How much dosage is typically administered for a menstrual induction injection? Answer: It varies.

Reply Date: 2019/12/06

More Info


Menstrual induction injections, commonly used to regulate or induce menstruation, can raise several questions regarding their effectiveness, side effects, and the timing of their administration. Let's delve into your questions and provide a comprehensive understanding of this topic.

Firstly, it is normal to experience an increase in vaginal discharge after receiving menstrual induction injections. These injections often contain hormones that can stimulate the lining of the uterus and affect cervical mucus production, leading to increased discharge. This is a typical response as the body prepares for menstruation.

Regarding the success rate of inducing menstruation after administering these injections, it largely depends on the timing of the injection in relation to your menstrual cycle. If you administer the injection before ovulation, the chances of successfully inducing menstruation are generally higher. However, if ovulation has already occurred, the effectiveness of the injection in bringing on menstruation may be reduced. This is because the hormonal changes that occur post-ovulation prepare the body for a potential pregnancy, and introducing additional hormones may not have the desired effect.

The dosage of menstrual induction injections can vary based on the specific medication used and individual patient factors. Common medications for inducing menstruation include progestins (like medroxyprogesterone acetate) and estrogen. The typical dosage for progestins can range from 5 to 10 mg daily for a set number of days, but this can vary based on the physician's recommendation and the patient's health profile. It is essential to follow your healthcare provider's instructions regarding dosage and administration.

In terms of timing, if you are looking to induce menstruation, it is generally recommended to administer the injection during the luteal phase of your cycle (after ovulation) if you are certain that ovulation has occurred. If you are unsure whether you have ovulated, it may be beneficial to use ovulation predictor kits or consult with your healthcare provider for guidance.

It's also important to note that while menstrual induction injections can be effective, they are not without potential side effects. Some individuals may experience mood swings, headaches, breast tenderness, or changes in their menstrual cycle after using these injections. If you have any concerns or experience significant side effects, it is crucial to discuss these with your healthcare provider.

In summary, menstrual induction injections can be a useful tool for regulating menstruation, but their effectiveness can be influenced by the timing of administration relative to ovulation. Increased discharge after the injection is a normal response, and the dosage should be tailored to individual needs as prescribed by a healthcare professional. Always consult with your doctor for personalized advice and to ensure that you are using these medications safely and effectively.

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