Thanks for writing in.
Tab Duphaston is given to treat infertility
due to luteal phase defect.
Luteal phase is time between day of ovulation and menstruation
In a pregnant woman, during the luteal phase the fertilized egg will travel from the fallopian tube
and into the uterus for implantation
. The luteal phase is normally 14 days long and on an average it can be anywhere from 10 to 17 days long. If your luteal phase lasts anything under 10 days it is considered a luteal phase defect.
In your case, your doctor might be suspecting same problem , so the tablet is given.
A luteal phase defect cannot sustain a pregnancy because the uterine lining in these women begins to break down, bringing on the menstrual bleeding and causing an early miscarriage
At least 6 cycles of drug need to be taken and if you conceive then you need to continue same for initial period of pregnancy.
I hope I have answered your query. In case of any doubt, I shall be happy to help you.