PRIMOLUT-N 5mg 1-1-1 should be taken for 3 days before the expected date of periods and continued for a couple of days till the date you dont want to get your periods. Don't take this tab for more than 10days . However if you are due for your period today, I don't think it will be of much help to take the tablet. Hope I've answered your question. Have a nice day :) Do not take meprate
or primolut-N if you think you might be pregnant .