The information provided is not a substitute for any medical advice. Therefore, you should always consult with your doctor or pharmacist before using any medication.
What is the dose for an adult?
Via IM injection, administer 200 mg within the first 5 days of the menstrual cycle or immediately after birth. Repeat the dose every 8 weeks if needed.
For oral dosage dorms, take 0.35 mg once a day. Start on the first day of menstruation or 21 days after delivery. Continue to take it until you intend to get pregnant.
Take 5 mg three times a day for up to 14 days, starting 3 days before you normally expect to start menstruation.
Dysfunctional uterine bleeding
Take 5 mg three times a day for 10 days. To prevent recurrence, take 5 mg two times a day from the 19th to 26th days of the next two cycles. (2.5 to 10 mg per day for 5 to 10 days, if taking norethisterone acetate).
Take 5 mg two to three times a day from the 19th to 26th day of your menstrual cycle. (The first day of bleeding is day 1).
Take 5 mg three times a day for 20 days, starting on the 5th day of the cycle. Continue treatment for 3 to 4 cycles.
Take 10 to 20 mg once a day, starting between the 1st and 5th days of the cycle, continuing for 4 to 6 months or longer. As norethisterone acetate, take 5 to 15 mg a day. Start at 5 mg daily and increase by 2.5 mg at 14-day intervals; take continuously for 6 to 9 months.
Premenstrual syndrome (PMS)
Take 5 mg 2 to 3 times a day on days 19 to 26 of your cycle. Repeat for several cycles, if needed.
What is the dose for a child?
There is no established pediatric dose. It may be unsafe for your child. It is always important to fully understand the safety of the drug before using. Please consult with your doctor or pharmacist for more information.
How is medication available?
Norethisterone is available in the following dosage forms and strengths:
- Tablet: 0.35 mg
- Tablet (containing norethisterone acetate): 5 mg
What should I do in case of an emergency or overdose?
In case of an emergency or an overdose, call your local emergency services or go to the nearest emergency room.
What should I do if I miss a dose?
If you miss a dose of norethisterone, take it as soon as possible. Within 3 hours after missing the dose, take it immediately and take the next dose at the regularly scheduled time. You will still be protected against pregnancy.
If you missed your dose for more than 3 hours, take it as soon as you remember. Take the next dose at the regularly scheduled time, even if that means taking 2 pills within a 24-hour period. Continue taking the pill as scheduled each day while using other forms of contraception (e.g. condoms, abstinence) for at least 48 hours to prevent pregnancy.
Taking two doses close together or at the same time may increase the severity of side effects such as nausea, spotting, and moodiness. You may feel side effects such as nausea and mood swings.