Force Load FontNorethisteroneTablet 5mgNorethisterone is a synthetic version of the hormone progesterone and can be used to delay your period. This happens as progesterone levels are maintained, which then sustains the natural lining of the womb until the medication is stopped. Your period should be expected 3 days after taking a final dose. This medication is for short term occasional use, but may be used for up to 30 days as a single course for period delay.Drug Warning