Description: Primotor N tablet contains the progestogen analog called norethisterone which belongs to a class of medicines called ‘Progestogens’ and is useful in treatment of heavy, painful, irregular periods, postponement of menstruation, premenstrual syndrome (PMS) and endometriosis. Progestogens are similar to the natural female hormone progesterone. Pharmaceutical Dosage Form: Tablet Route of Administration: Oral Composition: Each tablet contains: Norethisterone I.P. 5mg Excipients q.s. Mechanism of Action. Primotor N tablet contains Norethisterone that works by mimicking the activity of the natural hormone progesterone. Thereby, it restores hormone levels in the body and regulates the growth and shedding of the womb lining. Thus, it helps to treat menstrual disorders. Indications: Primotor N is used in the treatment of Heavy, painful or irregular periods, Premenstrual syndrome (PMS), postponement of menstruation & Endometriosis. Dosage: As directed by the physician. Storage: Store at temperature not exceeding 250 Protect from sunlight, heat and moisture. Presentation: 6x5x10 Side effects: Unusual vaginal bleeding or spotting Dizziness Dry mouth Constipation Nausea Diarrhea Headache Breast pain and tenderness Contraindications: Primotor N is contraindicated in Patients with known or suspected hypersensitivity to the drug or any of the excipients, during pregnancy and lactation, in patients with severe hepatic failure or renal or cardiac impairment or Epilepsy, Migraine headaches, Asthma or Venous Thromboembolism. Drug Interactions: Primotor N can cause drug interaction with following drugs: Carbamazepine Boceprevir Phenytoin Nelfinavir Ritonavir Aminoglutethimide Cotrimoxazole Rifampicin Tetracycline Ciclosporin