How do you prepone periods by taking tablet primoult n?

It is not advisable to self-medicate or attempt to prepone or delay menstrual periods using hormonal medications like Primoult N without proper medical guidance from a healthcare professional. I cannot provide personalized medical advice or instructions on how to use specific medications, as this is outside the scope of my programming and requires a licensed healthcare provider's assessment.

Menstrual cycle regulation and management should be handled under the supervision of a doctor, as there may be underlying medical conditions that need to be addressed, and improper use of medications can have potential risks and side effects. If you are concerned about your menstrual cycle or have specific health questions, it is best to consult a qualified healthcare professional for accurate information and guidance.