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Norethisterone

Medication progestogen hormonal
Aka: norethindrone, Primolut N
Brands seen in Singapore: Norcolut, Norcutin
Not medical advice. Check with your doctor or pharmacist before you start, stop or change the timing of anything you take.
How to use
What it’s for
HealthHub: heavy or absent periods; menopause with estrogen
When to take
HealthHub: after food, at the SAMe time every day
Take with
HealthHub: food · it eases stomach upset and nausea
Pros & cons
Pros
  • HealthHub: for absent, heavy or abnormal periods
  • HealthHub: also used with estrogen in menopause care
  • SG register lists 5 mg tablets (norcolut, norcutin)
Cons
  • HealthHub: nausea, breast tenderness and headache
  • HealthHub: mood swings, weight and skin pigment changes
  • HealthHub: no interaction list on the SG leaflet
Sources
  1. HSA — Listing of Registered Therapeutic Products (data.gov.sg dataset d_767279312753558cbf19d48344577084), Forensicclassification column; all 5,511 rows cached at /tmp/hsa_all.json and filtered locally (not re-fetched), norethisterone rows, 27 Aug 2026 · read 2026-08-27
    what it says
    “NORCOLUT TABLET 5 mg SIN06679P · NORCUTIN TABLETS 5 mg SIN03934P — ATC G03DC02; all 4 norethisterone-containing rows, including the estradiol combinations Activelle and Trisequens, read Forensicclassification "Prescription Only"”
  2. HealthHub (Pharmaceutical Society of Singapore / MOH) — Norethisterone: what is this medication for · read 2026-08-27
    what it says
    “Norethisterone is a type of progestogen … Management of various abnormal uterine bleeding including absence of menstrual flow and heavy menstrual bleeding. Management of menopause in combination with estrogen replacement therapy”
  3. HealthHub — Norethisterone: how should I take or use this medication · read 2026-08-27
    what it says
    “Do not stop taking your medication without checking with your healthcare professional. This medicine should be taken after food.”
  4. HealthHub — Norethisterone: what precautions should I take · read 2026-08-27
    what it says
    “You have a history of or current medical conditions such as liver problems, stroke, heart disease, blood clots, migraine headaches, epilepsy (fits), diabetes mellitus or cancer.”
  5. HealthHub — Norethisterone: common side effects · read 2026-08-27
    what it says
    “Stomach discomfort, nausea and vomiting. Take it after food to reduce these side effects. Breast tenderness. Headache … Dizziness, drowsiness … Weight changes, mood swings … Skin pigmentation.”
  6. HealthHub — Norethisterone: what food or medication should I avoid · read 2026-08-27
    what it says
    “Some medications might interact with this medication. Check with your healthcare professional if you want to take any other medicines, supplements or herbal products.”
  7. US label for norethindrone acetate tablets 5 mg (Golden State Medical Supply, effective 2025-01-14) via openFDA drug/label.json, Dosage and Administration · read 2026-08-27
    what it says
    “Secondary amenorrhea, abnormal uterine bleeding … 2.5 to 10 mg … daily for 5 to 10 days … Endometriosis Initial daily dosage of 5 mg … increased by 2.5 mg every two weeks until 15 mg per day is reached.”
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Updated 2026-08-29. Every line above traces to a numbered source. Kozen-X is not a medical device and does not give medical advice. It lists what published sources have written down — nothing more. A pair not listed is unrecorded, not cleared. Before you start, stop or re-time anything, talk to your doctor or pharmacist.