Regestrone is a synthetic progestin used for contraception or to treat hormone-related conditions. Learn about its effects, dosage, side effects, food interaction and FAQ on MedicinesFAQ. Regestrone 5 mg Tablet is used to treat heavy, painful, or irregular periods, premenstrual syndrome (PMS), and endometriosis. Additionally, it may be used in the treatment of breast cancer. It contains Norethisterone, which works by restoring the hormone levels in the body. In some cases, this medicine may cause side effects such as unusual vaginal bleeding or spotting, dizziness, dry mouth, constipation, nausea, and diarrhoea. Let the doctor know if you are pregnant or breastfeeding, taking ... Regestrone is used for Heavy menstrual bleeding, Pain during menstruation, Endometriosis. Know it’s uses, side effects, reviews, composition and precautions only on 1mg . Regestrone is a prescription drug, available for use as Tablet. Primarily, it is used for the treatment of Endometriosis, Periods pain, Abnormal Uterine Bleeding.