Dear Practo User,
You have to start taking medicine 3-4 days prior to the expected date and continue till the date till which you want to postpone your menses, works well if your cycles are regular.
Take Tab Regestron 5mg twice a day..
Next Steps
Expect a little bit heavy bleeding if you delay for longer period , any confusion or problem, visit a Gynaecologist
Health Tips
This does not work as contraceptive