Tracking micronized progesterone — cyclical
Body-identical progesterone taken as a nightly block each month, protecting the uterine lining while estrogen does the symptom work. It's usually taken at bedtime because it can be sedating. A cyclical regimen usually means a monthly withdrawal bleed — expected, and worth logging so it isn't misread later as a new symptom.
- Schedule
- A block of 12 nights (guidelines allow 12–14), at bedtime — anchored either to calendar dates (days 1–12 of each month) or to your cycle (from day 15), per BMS guidance.
- UK names
- Utrogestan
- US names
- Prometrium
- Route
- oral
- In Perity
- A calendar-cyclical or period-anchored schedule — Perity supports both anchors because the BMS treats them as interchangeable. Bedtime reminders, generically worded, from your phone only.
What to log
- Log the on-nights as they happen. The off-nights matter just as much: mood and sleep that shift when the block starts or ends are among the most-asked-about patterns in perimenopause care.
- Log the withdrawal bleed like a period — Perity uses your rhythm so an expected bleed doesn't read as a red flag.
- If you and your prescriber move the block (calendar-anchored to cycle-anchored, or a different start day), record the change date.
- Some people report feeling different on progesterone nights. Whatever your version of that is — groggy, calmer, low, wired — log it with dates rather than adjectives at the appointment.
Questions
Days 1–12 of the month, or day 15 of my cycle — which anchor is right?
The BMS treats them as interchangeable: cycle-day is the label's framing, calendar-month is offered for practicality. Which fits your life is between you and your prescriber — Perity tracks either, and switching anchors is a schedule edit, not a new record.
How do I tell progesterone effects from everything else?
You can't from memory — that's the honest answer, and it's why the on/off structure of a cyclical regimen is a gift to tracking. Twelve nights on, the rest off, month after month: if a symptom rides that rhythm, a dated log will show it, and Perity lines the two up for you. What it means is your clinician's call.
Symptom guides for micronized progesterone
- Brain fog
- Anxiety
- Irritability / rage
- Low mood
- Mood swings
- Forgetfulness
- Hot flash
- Night sweats
- Chills / cold flashes
- Palpitations
- Dizziness
- Trouble falling asleep
- All symptoms →
Schedule sources
- Utrogestan SmPC (emc 352); BMS 'Progestogens and endometrial protection' (May 2026); NHS guidance
- 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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