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What delays periods in a 25-year-old woman on Meprate?

This Premium Q&A, reviewed and published, features a real conversation between an iCliniq user and a physician.

Patient's Query

Hello doctor,

I have a hormonal imbalance, and I consulted my gynecologist. She prescribed me the Methylcobalamin (MCBM) supplement and Meprate 10 milligrams to be taken for five days if I did not get my menstrual period after 40 days. I followed her instructions, but my period has still not started. It has been nearly 15 days since I completed the Meprate tablets. What should I do now?

Kindly help.

Hello,

Welcome to icliniq.com.

Thank you for sharing your detailed situation. Since it has been about 15 days since you completed Meprate and you still have not gotten your period, here is a structured approach you can take:

1. Understanding the delay after Meprate: Meprate, also known as Medroxyprogesterone, is a synthetic form of progesterone commonly prescribed to trigger menstrual bleeding. Typically, withdrawal bleeding should occur within seven to 14 days after completing the medication. If it has been more than 15 days and menstruation has not occurred, it may be due to significantly imbalanced hormone levels, insufficient development of the endometrial lining, or possibly pregnancy, depending on individual circumstances.

2. The importance of a pregnancy test: If you are sexually active, it is important to rule out pregnancy, even if you consider it unlikely. Occasionally, pregnancy may be the cause of delayed menstruation, even when hormonal treatment has been administered.

3. When to consult your gynecologist again: You should schedule a follow-up appointment with your gynecologist. During this consultation, it may be helpful to request a pelvic ultrasound to assess the thickness of the endometrial lining and examine the ovaries for conditions such as polycystic ovary syndrome (PCOS) or ovarian cysts. In addition, your doctor may suggest hormonal blood tests, including luteinizing hormone, follicle-stimulating hormone (FSH), prolactin, thyroid-stimulating hormone (TSH), estradiol, progesterone, and androgen levels such as dehydroepiandrosterone sulfate and testosterone.

4. Possible treatment options: Based on the results of these evaluations, your doctor may recommend a stronger or extended course of progesterone or prescribe combined oral contraceptive pills to help regulate your menstrual cycle. In some cases, lifestyle changes such as maintaining a healthy weight, reducing stress, and improving sleep quality can also support hormonal balance. If polycystic ovary syndrome (PCOS) is diagnosed, specific treatment related to that condition will be necessary.

5. Role of supplements: You are currently taking MCBM, a supplement that contains methylcobalamin, folic acid, and vitamin B6. This supplement is beneficial for supporting hormonal balance and should be continued unless your doctor advises otherwise.

I hope this information has been helpful.

Regards.

Medically reviewed byiCliniq medical review team
Published At July 31, 2025
Reviewed AtAugust 4, 2025

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