Last checked September 2026 against 12 sources · Editorial policy
When to take progesterone: morning or night?
Take oral progesterone at night. The Prometrium label says so because some women become very drowsy or dizzy after a dose, and blood levels peak within about 3 hours. The NHS advises taking it at least 2 hours after food, swallowed whole with water. If you miss a dose, take it when you remember unless the next one is due soon; never double up. HRT can take up to 3 months to work fully.
Micronized progesterone causes drowsiness, so bedtime dosing is standard. Timing for cyclical and continuous HRT, with or without food, and missed doses.
Taking progesterone at night: expectation vs reality
What people often expect
“It doesn't matter what time I take my progesterone”
What the evidence shows
Timing matters for side effects. Drowsiness and dizziness are the main reasons progesterone is taken at night, and food increases how much is absorbed, which can make those effects stronger. Taken at bedtime, drowsiness can even help: in a small trial, 300 mg at night restored disturbed sleep in postmenopausal women without affecting normal sleep.
When and how to take progesterone
Why take progesterone at night?
Prometrium can cause transient drowsiness and dizziness, and in a few cases blurred vision, difficulty speaking or walking, or feeling abnormal. Taking it at bedtime means you sleep through the strongest effects instead of driving or working through them. Progesterone also has sleep-promoting effects, which many women find helpful when menopause disrupts sleep.
Can you take progesterone in the morning?
The US label and the NHS both say to take it at bedtime. Taken in the morning, drowsiness and dizziness would fall during the day, when you're driving or working, and you shouldn't drive or use machinery while drowsy. If you have a reason to change the time, such as night shifts, ask your prescriber rather than switching on your own.
Take progesterone with or without food?
Food increases the amount of Prometrium absorbed compared with an empty stomach, according to the label. The NHS advises taking Utrogestan at bedtime, at least 2 hours after food. If swallowing is hard, the Prometrium label suggests taking it with a glass of water while standing. Bijuva, the combined estradiol and progesterone capsule, is labeled to be taken each evening with food.
Which days to take progesterone
On sequential HRT, the NHS schedule is 200 mg on days 15 to 26 of a 28-day HRT cycle, and the US label says 200 mg for 12 days per 28-day cycle; a bleed usually follows. On continuous HRT, 100 mg is taken on days 1 to 25 or every day. Writing on the pack or using a calendar helps you remember which days are progesterone days.
Learn more →When to take progesterone for perimenopause
If you still have periods and take estrogen, progesterone is usually taken for 12 to 14 days of each cycle, which brings a planned monthly bleed. The progestogen needs to cover every cycle while you use estrogen. Once you've had no period for 6 to 12 months, your doctor may move you to daily 100 mg, which usually means little or no bleeding.
Learn more →Missed progesterone dose
The NHS says to take a forgotten capsule as soon as you remember, unless it's nearly time for the next dose, in which case skip it. Don't take two doses to make up. Taking an extra dose by mistake is unlikely to harm you but may make you drowsy or dizzy. After a missed dose you may notice some bleeding or spotting; if you often forget, the NHS suggests setting an alarm.
How long does progesterone take to work?
As part of HRT, it can take up to 3 months to feel the full benefit, and the NHS suggests talking to your doctor if you don't feel better by then. In a trial after menopause, 300 mg nightly reduced hot flashes over 12 weeks. When used to bring on a period, 80% of women in a Prometrium trial bled within 7 days after a 10-day course.
Should I take progesterone?
If you have a uterus and take estrogen HRT, you need a progestogen, because estrogen alone can thicken the lining and cause uterine cancer. If you've had a hysterectomy, you usually don't. Progesterone isn't suitable if you're allergic to peanuts or soy, have unexplained bleeding, breast cancer, a past blood clot, stroke or heart attack, liver disease, or are pregnant.
Learn more →Progesterone timing by the numbers
From the studies on this page
had dizziness on Prometrium with estrogen vs 9% on placebo in a 3-year trial
15%
3 hours
2 hours
3 months
US and UK instructions differ slightly on food; follow the leaflet that comes with your own prescription.
Tips for taking progesterone
Take it as the last thing before bed
First stepBedtime dosing lets you sleep through drowsiness and dizziness. Swallow capsules whole with water; if swallowing is hard, stand while taking it.
Keep a regular gap after dinner
Strong evidenceThe NHS advises at least 2 hours after food. Food increases absorption, which can strengthen side effects.
Mark progesterone days
Strong evidenceOn a cyclic schedule, mark the days on your calendar or pack, or set an alarm; skipping days leaves the lining less protected.
No alcohol or driving when drowsy
First stepAlcohol makes drowsiness worse. Don't drive or use tools until you know how progesterone affects you.
When to call a doctor about taking progesterone
Blurred vision, trouble speaking or walking after a dose
Tell your provider right away, as the label advises.
No improvement after 3 months of HRT
Talk to your doctor about changing the dose or type.
Heavy or unexpected bleeding after 6 months
See your doctor to check the lining.
Urgent: Calf pain or swelling, chest pain or sudden breathlessness
Call 911; these can be signs of a blood clot.
When to take progesterone: questions women ask
Why do you take progesterone at night?
Because it can make you drowsy and dizzy. Taking it at bedtime lets you sleep through those effects, and many women find it helps them sleep.
What is the best time to take progesterone?
At bedtime. The NHS adds that it should be at least 2 hours after food, swallowed whole with water.
Can I take progesterone in the morning?
It's not recommended. Drowsiness and dizziness would hit during the day. If your schedule is unusual, ask your prescriber how to time it.
How long does progesterone make you sleepy?
The label describes the drowsiness as transient. Blood levels peak within about 3 hours, so taking it at bedtime means most of it passes while you sleep.
What should I do if I miss a dose of progesterone?
Take it as soon as you remember, unless your next dose is nearly due; then skip it. Don't take two doses together. You may notice some spotting.
How fast does progesterone work?
As part of HRT, up to 3 months for the full effect. To bring on a period, a bleed usually follows within about a week of finishing the course.
When should I take progesterone for sleep?
At bedtime. Progesterone isn't approved as a sleep aid, but its drowsiness and small trials showing better disturbed sleep are one reason bedtime dosing suits women with menopausal sleep problems.
Related →Is progesterone safe to take?
For most women with a uterus who take estrogen, yes, and it's needed to protect the lining. It isn't suitable with peanut allergy, unexplained bleeding, breast cancer, a history of clots, stroke or heart attack, liver disease, or pregnancy.
When should I take progesterone for perimenopause?
At bedtime, on the days your prescriber sets. While you still have periods, that's usually 200 mg for 12 to 14 days of each cycle, which brings a monthly bleed. Once periods have stopped for 6 to 12 months, it may become 100 mg nightly.
Related →Can I take progesterone with estrogen at the same time?
Yes. Bijuva combines estradiol and progesterone in one capsule taken each evening with food, and separate progesterone is taken at bedtime. Estrogen tablets are best taken at the same time each day.
Sources
- Prescribing information: Prometrium (progesterone capsules). Acertis Pharmaceuticals, 2026. DailyMed, US National Library of Medicine.
- NHS. Utrogestan (micronised progesterone): how and when to take.
- NHS. Utrogestan (micronised progesterone): common questions.
- Caufriez A, Leproult R, L'Hermite-Balériaux M, et al. Progesterone prevents sleep disturbances and modulates GH, TSH, and melatonin secretion in postmenopausal women. J Clin Endocrinol Metab. 2011;96(4):E614-23.
- NHS. Utrogestan (micronised progesterone): side effects.
- Prescribing information: Bijuva (estradiol and progesterone capsules). Mayne Pharma, 2026. DailyMed, US National Library of Medicine.
- Women's Health Concern / British Menopause Society. Fact sheet: HRT types, doses and regimens.
- NHS. Sequential combined HRT: how and when to take.
- Hitchcock CL, Prior JC. Oral micronized progesterone for vasomotor symptoms--a placebo-controlled randomized trial in healthy postmenopausal women. Menopause. 2012;19(8):886-93.
- NHS. Utrogestan (micronised progesterone): who can and cannot take.
- National 911 Program. 911.gov.
- NHS. Oestrogen tablets, patches, gel and spray: how and when to take.
See our editorial policy.
Related guides
Progesterone 100 mg and 200 mg
Micronized progesterone is taken as 100 mg daily (continuous) or 200 mg for 12 days a month (cyclical) alongsi…
Progesterone side effects
Drowsiness, dizziness, bloating, breast tenderness and mood changes are the most common. Pill and cream side e…
Progesterone pills
Micronized progesterone (Prometrium, Utrogestan) vs synthetic progestins like medroxyprogesterone and norethin…
Menopause insomnia
Night sweats, falling progesterone and anxiety all disrupt sleep in menopause. CBT-I, HRT and other treatments…