When one should take duphaston tablets, if trying to conceive ?

Duphaston: Unless you have lute all phase deficiency or are undergoing ivf pregnancy, you do not need duphaston. It won't help you. If undergoing ivf, your fertility team will instruct you as to how to take it. It may have no beneficial effect in luteal phase defect, but if you have been told you have this, you would start the med after ovulation.