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Also known as: Levonorgestrel IUS, Mirena coil, Bayer IUS
A hormonal intrauterine system (coil) that releases a low dose of levonorgestrel locally into the uterus. In the context of HRT, it is used as the progestogen component to protect the uterine lining when combined with systemic oestrogen. Also functions as contraception.
This page contains self-reported experiences from the Narrated community — not clinical data. Outcomes are subjective. Always consult your GP or specialist before starting, stopping, or changing any intervention.
Total Reports
3
Median Score (Wk 8)
8/10
Would Continue
100%
Avg Duration
16 wk
Most Common Goal
sleep
Most Reported Side Effect
Light spotting for 6 weeks post-HRT start (33%)
Based on self-reported community data. Scores use a 1–10 scale.
Regulatory status does not mean an intervention is safe or unsafe. Laws vary by country — check your local regulations.
Women who reported on Mirena IUS mentioned using it for the following goals. This does not mean it is intended for or achieves any of these outcomes.
3 reports from women who tried Mirena IUS
The Mirena coil plus estradiol gel eliminated the night sweats that had been disrupting my sleep for two years. By month two I was sleeping seven hours straight on most nights for the first time since early perimenopause. The difference in daytime functioning has been profound.
I already had a Mirena fitted for heavy periods so my specialist used it as the progestogen component of my HRT. Adding the estradiol gel was straightforward. After some initial spotting as my uterus settled, the combination completely resolved my hot flashes and sleep issues within three months.
Using the Mirena as progestogen alongside estradiol gel was a game-changer. The coil insertion was uncomfortable for a day or two but after that the combination worked brilliantly. Hot flashes, night sweats and the crushing fatigue all resolved within two months. I wish I'd started sooner.
Research context compiled from published sources
Releases levonorgestrel locally into the endometrial cavity, suppressing endometrial proliferation. Systemic absorption is very low, which may reduce progestogen-related side effects. Also thickens cervical mucus and may suppress ovulation.
Well Studied
Extensive human research over many years, including randomized controlled trials.
Well Characterized
Decades of long-term safety data available from human use.
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.
Other interventions tracked on Narrated.
Data last updated: March 19, 2026