Tracking hormonal IUD (Mirena) as the progestogen arm
A levonorgestrel intrauterine device doing the progestogen job in an HRT regimen while estrogen is delivered separately. Nothing to take daily — which makes the surrounding record (your estrogen schedule, your symptoms, any bleeding) the entire tracking story.
- Schedule
- No daily dose. For endometrial protection in HRT: licensed for 4 years (FSRH supports 5 off-label) — different from its 8-year contraception licence.
- UK names
- Mirena
- US names
- Mirena
- Route
- intrauterine
- In Perity
- No dose reminders — the record is symptoms against the device timeline, plus a replacement date worth knowing.
What to log
- Know your insertion date and the 4-year endometrial-protection clock — it's shorter than the contraception licence people often have in mind.
- With no daily progestogen dose, bleeding and spotting logs carry the signal — date them.
- Your estrogen arm (patch, gel, spray) still has its own schedule; track it as usual.
Questions
I thought Mirena lasted 8 years?
For contraception. As the progestogen arm of HRT — protecting the uterine lining — the licence is 4 years, with FSRH supporting 5 off-label. Worth confirming your replacement timeline with whoever manages your HRT.
What is there to track with an IUD?
The things around it: your estrogen doses, your symptoms, and any bleeding, all dated. The IUD removes the daily-pill variable, which actually makes the rest of the record cleaner to read.
Symptom guides for hormonal IUD (Mirena)
- Brain fog
- Anxiety
- Irritability / rage
- Low mood
- Mood swings
- Forgetfulness
- Acne
- Headache
- Weight gain
- Sore breasts
- Cramps
- Bloating
- All symptoms →
Schedule sources
- Mirena SmPC (emc 1132); FSRH guidance (Jan 2024)
- Cadences per Perity's sourced schedule reference (emc SmPCs, BMS, NHS, FSRH, FDA — verified 2026-07-01). Cadence facts only, never doses.
Perity informs, never prescribes — decisions belong with you and your clinician.
Educational content, written and maintained by Perity (founder: EiEi), grounded in the sources cited on this page. It is not medical advice, and Perity never interprets your data or recommends treatment. Last reviewed 2026-07-09.
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