What is the right dossage of taking primolut n? and it is safe to take?

Norethisterone: Primolut n is a brand of generic norethisterone which is a progestin used as a hormonal contraceptive. All medications ; dietary supplements have some risks. Whether potential risks exceed desired benefit is a question to be addressed w/your prescribing physician. Given that it's approved for sale in many countries, i'd say it's relatively safe. http://www.drugs.com/international/primolut-n.html.