Norethisterone
Also known as: Norethindrone, Utovlan, norethindrone acetate
A synthetic progestogen used as the progestogen component in some combined HRT preparations and as a standalone treatment to delay menstruation or manage heavy periods. Has androgenic properties and is associated with more side effects than micronized progesterone in some women.
This page contains self-reported experiences from the Narrated community — not clinical data. Outcomes are subjective. Always consult your doctor or specialist before starting, stopping, or changing any approach.
Regulatory status does not mean an approach is safe or unsafe. Laws vary by country — check your local regulations.
Community Experiences
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Research Context
Research context compiled from published sources
How does Norethisterone work?
Binds to progesterone receptors to protect the endometrium from oestrogen-driven hyperplasia. Also has partial androgenic and oestrogenic activity. As a synthetic progestogen, it does not have the same GABA-receptor activity as micronized progesterone and may have slightly different cardiovascular and breast tissue effects.
Research Depth
Well Studied
Extensive human research over many years, including randomized controlled trials.
Long-Term Evidence
Well Characterized
Decades of long-term safety data available from human use.
Known Interactions
Reported Contraindicated Populations
Published Dose Ranges
Dose ranges from published research. Individual dosing should be determined with your healthcare provider based on your specific circumstances.
Factual research context from published sources — not a safety assessment or recommendation. Research classifications may change as new data emerges.
Related Approaches
Other approaches tracked on Narrated.
Data last updated: No data yet