What is the dosing regimen for micronized progesterone?

The dosing regimen for micronized progesterone is 200 mg vaginally, given once daily, which is why this choice is appropriate. This route of administration is commonly used in various clinical settings, including for the support of early pregnancy and the treatment of luteal phase deficiencies.

Micronized progesterone is well-absorbed through the vaginal mucosa, allowing for direct delivery to the uterus while minimizing systemic side effects. The once-daily dosing is sufficient to maintain adequate serum levels of progesterone, which is important for maintaining the endometrium and supporting pregnancy.

Other dosing regimens do not align with established guidelines for micronized progesterone usage. For example, more frequent dosing or significantly lower or higher doses may not provide the hormonal support required for the intended treatment. Thus, the choice of 200 mg vaginally once daily is based on clinical evidence and standard practice within the field of obstetrics and gynecology.