Brief Answer:
Duphastan use not recommended by ACOG guidelines preconceptionally.

Detailed Answer:
Hello,
thanks for the query to hcm for an opinion,
As you are planning for pregnancy , it has been correctly advised to start folic acid tabs ideally from 3 months prior from date of planned conception in order to prevent any congenital anomalies in the child which are commonly seen due to folate deficiency.
However duphastan tabs are progesterones which are actually known to support pregnancy after it has arrived and in no way helps in getting pregnant. If your serum progesterones levels are normal and you have not been experiencing any inter-menstrual bleeding or irregularity of menses, it indicates that you don't suffer from any such deficiency and hence progesterone supplementation is actually not required. It is practiced empirically by some practitioners that if the woman conceives and develops luteal phase defect or deficiency then she may experience a threatened miscarriage, so in order to avoid such incident anyhow, they prefer prescribing these hormonal support during each cycle when the couple is trying for a child.
In a way it is not harmful, but from guidelines point of view, it is not recommended.
I hope i have answered your query in detail,
Wishing you good health,
Regards

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Brief Answer:
thanks

Detailed Answer:
Thanks.
If you have no further queries , you may please close the query hence.
Regards

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