The sleep system built for female biology.
Fall asleep easier and wake up with more energy. No melatonin and no morning grogginess. Made with ingredients backed by 10+ clinical trials.
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Fall asleep faster. Stay asleep longer. Wake up with more energy.
Total Kit Value $205
Total Kit Value $205
Limited quantities · Ships by Oct 21
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Early reviews
“Essential for a restful night”
Posie Tester
Break free from burnout by supporting the two key female sleep rhythms.
1. The circadian rhythm (24 hrs)
Every organ and cell has a daily clock that dictates when to energize and when to recharge.
2. The menstrual cycle (~30 days)
Monthly hormone shifts significantly change sleep, stress resilience, and nutrient needs week by week.
Stress, erratic schedules, missed sunlight, and other modern habits confuse these rhythms → sleep breaks down, hormones misfire, energy metabolism stalls.
Rebuild sleep from the root with a simple routine that starts when your sleep chemistry starts – in the morning.
Take 1 Sleep Primer capsule for sleep that holds up all month
Your daytime rhythms of cortisol and serotonin set up your sleep for the night. Sleep Primer helps get them started on the right track.
Hit your personalized morning light goal for steadier energy and an easier bedtime
Sunlight is the #1 signal for your circadian rhythm. The Posie app tells you how much you need.
Wear your Dream Shades from 8pm until bed to wind down more easily
Blocking blue light helps your body make its own melatonin, right on time.
Smooth out sleep stressors with Sleep Primer, the first sleep supplement to adapt to your menstrual cycle.
Your hormones rewrite your sleep needs week to week. So Sleep Primer shifts with them — one formula for your follicular phase, another for your luteal phase.
The challengeYou feel too wired at night — rising estrogen heightens dopamine and alertness, delaying your wind-down.
How Sleep Primer helpsSupports the serotonin-to-melatonin transition, easing you from daytime stimulation into nighttime calm.
More of what shifts in this phase
The challengeAround ovulation, that daytime high can tip into nighttime tension and restlessness.
How Sleep Primer helpsCalms the nervous system and releases physical tension while keeping your daytime motivation.
The challengeYou wake more and feel less restored — progesterone and estrogen shifts lower your ability to buffer stress.
How Sleep Primer helpsSupports healthy cortisol through HPA-axis support, for deeper, more uninterrupted sleep.
More of what shifts in this phase
The challengeLate-luteal estrogen and serotonin drop, so you feel more emotionally sensitive and sleep gets lighter.
How Sleep Primer helpsStabilizes serotonin and mood for smoother regulation and deeper sleep.
The challengeBlood-sugar dips at night can wake you or make sleep feel shallow.
How Sleep Primer helpsSteadies the glucose and insulin response from your meals for a more stable overnight baseline.
Wind down more easily and wake up restored with Sleep Primer’s natural ingredients.
Ease into your evenings while Dream Shades help your body make its own melatonin.
Melatonin is your body’s nighttime signal.
Melatonin is the hormone that tells your body it’s time to sleep. As evening approaches, your brain naturally begins producing melatonin, helping coordinate your internal clock and many of the restorative processes that happen while you sleep.
Blue light suppresses that signal.
The blue light that helps wake you up in the morning can work against you at night. Light from phones, tablets, TVs, and even modern LED light bulbs can suppress melatonin, making it harder for your body to recognize that it’s time for sleep. This relationship has been studied for more than 20 years and is one of the most well-established findings in circadian science.
Blocking blue light helps preserve it, but only if you block the right wavelengths.
If blue light suppresses melatonin, filtering those wavelengths before they reach your eyes can help preserve your body’s natural evening response. But not all blue light blocking glasses are designed the same way. Studies generally find the greatest effects with lenses that filter the specific wavelengths most closely linked to melatonin suppression, while lightly tinted lenses tend to have much smaller effects.
Dream Shades lenses are spectrally engineered to target those biologically active wavelengths while preserving brightness and natural color vision. That means you can watch TV, read, or unwind in the evening with less color distortion while still reducing the blue light most closely linked to melatonin suppression.
This may matter even more for younger women.
New research suggests that younger women may be especially sensitive to the effects of evening blue light. Several studies have found greater melatonin suppression and stronger circadian responses in women during their reproductive years, suggesting that reducing blue light exposure in the evening could be particularly beneficial for this group.
Stay effortlessly on track with personalized guidance from the Posie app.
Posie helps you address the things a pill will never fix.
A daily sunlight goal for steadier energy and easier nights.
Personalized wind-down suggestions so you’re ready when bedtime comes.
Daily reminders so you never miss a dose.
Just tap your phone to your packaging — and the more you use it, the smarter it gets.
Build sleep and stress resilience that lasts.
Swipe through →
Wind-down eases
Falling asleep feels less effortful, and evenings feel smoother even on stressful days.
The science
Saffron supports the serotonin-to-melatonin transition; a calming active lowers evening tension without sedation — so your clock can hear its cues again.
Sleep gate strengthens
You drift into sleep instead of wrestling it, and midnight wakeups feel lighter.
The science
Higher estrogen plus saffron strengthen the serotonin-to-melatonin transition, so your natural “sleep gate” becomes more reliable.
Luteal support activates
Luteal sleep holds up better than usual, and 3 a.m. wakeups are shorter and less charged.
The science
Ashwagandha smooths cortisol as progesterone rises; magnesium supports GABA; a glucose-steadying botanical blunts spikes that trigger night waking.
Late luteal softens
PMS doesn't hijack your sleep or mood, and you wake more functional and less depleted.
The science
Saffron hits its sleep-quality window; ashwagandha helps prevent cortisol overshoots; magnesium supports cleaner melatonin signaling in your hardest hormonal week.
Systems align
Evenings, nights and mornings follow one smooth pattern that syncs with your energy, mood and appetite.
The science
With two full cycles of consistent cues, your circadian and menstrual rhythms start reinforcing each other instead of competing.
Momentum builds
Bedtime and wake-time feel almost automatic, with a natural arc of energy across your day.
The science
Repeated morning light and nightly wind-down anchor your body clock, so healthy timing becomes the path of least resistance.
Amplitude strengthens
Higher highs and deeper lows give your day structure, and stress and screens stop knocking you out of rhythm.
The science
A stronger circadian amplitude — a clear day/night contrast — is linked to more resilient sleep, mood, and metabolic health over time.
Scientifically support your mood, metabolism and so much more than sleep.
peer-reviewed clinical trials
What they show
Each Posie ingredient is backed by human clinical research — not just lab or animal studies — for its role in sleep and stress support.
peer-reviewed circadian studies
What they show
Published since 2008, they show how deeply your daily clock governs sleep, hormones, metabolism, and long-term health — and how modern life throws it off.
peer-reviewed menstrual studies
What they show
They link menstrual hormones to women’s brain, heart, metabolic, immune, and mental health — influencing nearly every system in the body.
easier to fall asleep, in as little as 3 days*
Hundreds of circadian scientists, endocrinologists, and OB/GYN researchers converge on the same finding: supporting these two rhythms supports not just sleep, but mood, metabolism, and more.
*Made with Vanizem®, shown in a randomized, placebo-controlled study to make falling asleep 51% easier at 150mg. Individual results vary.
| Feature | Standard sleep supps |
|
|---|---|---|
| Built for female biology | ✓ | ✕ |
| Offers a 360 solution, not just a pill | ✓ | ✕ |
| Non-sedative, no melatonin | ✓ | ✕ |
| Built for long-term results, not just one night | ✓ | ✕ |
| Dosed in the morning | ✓ | ✕ |
| Tech-enabled + personalized | ✓ | ✕ |
| Supports more than sleep — energy, mood & metabolism | ✓ | ✕ |
FAQs
Why take a sleep supplement in the morning?
Because sleep is built during the day. Sleep Primer works with your circadian rhythm from the start, so your body is ready to rest by night.
Will it make me groggy?
No sedatives, no melatonin — so no morning fog.
How is this different from melatonin?
Melatonin forces a signal; Posie helps your body make its own, in rhythm.
Are blue-light glasses actually legit — and why are yours special?
Evening light really does delay the melatonin your body needs to fall asleep, which is why blocking it helps. Most blue blockers only cut screen light. Dream Shades use proprietary lens tech to block screen and ambient light, so your whole evening environment stops signaling "daytime."
Do I have to use the app?
No — it makes things effortless, but the routine works without it.
Is the app another subscription?
It's included with your Sleep System.
How do I cancel?
Anytime, self-serve, no hassle.
What if I don’t get a period?
Sleep Primer still works for you. Many women don’t get a regular period, most commonly because of a hormonal IUD. Sleep Primer does not alter your hormones. And even without a period, your body often still follows a monthly rhythm that shows up in your sleep. Many women notice a part of the month when sleep feels lighter or more restless, or anxiety creeps in a bit more.
If that sounds familiar, use it to time your switch. Those harder days usually fall late in the luteal phase, so start the Follicular Formula a few days after they pass. If it’s hard to pinpoint, no worries. Start with the Follicular Formula, switch to the Luteal Formula after 14 days, and see how you feel. Sleep Primer is designed to help either way.
What if I have an irregular cycle?
That’s common, and it’s one reason we built the Posie app. Sleep Primer does not alter your hormones or try to regulate your cycle. It supports your sleep through whatever phase you’re in. Just log your period when it starts, and the app adjusts your routine to match, so your guidance follows what your body is actually doing, not a 28-day calendar.
Is this safe for women on birth control?
Sleep Primer does not alter your hormones, and its ingredients are not known to interact with hormonal birth control. If you use a non-hormonal method like a copper IUD, your natural cycle continues, so you can follow Sleep Primer’s standard routine. If you’re managing a health condition or take prescription medication, we recommend checking with your doctor before you start.
Is this safe for pregnant women?
We don’t recommend Sleep Primer if you are pregnant, trying to conceive or breastfeeding. Most botanical ingredients haven’t been studied enough in pregnancy to confirm they’re safe, so they’re generally not recommended during this time. Talk with your healthcare provider about sleep support that’s right for this stage. Dream Shades, our blue-light blocking glasses, are fine to use anytime.
What if I’m in menopause?
Yes, you can still use Sleep Primer. As estrogen declines, your body can become less responsive to insulin, making blood sugar harder to regulate. Mood changes and anxiety can also make it harder to fall asleep and stay asleep. Sleep Primer contains mulberry leaf extract to help moderate blood sugar rises after meals, plus ashwagandha and saffron to support a healthy stress response and sleep quality. These benefits remain relevant during and after menopause.
You don’t need a menstrual cycle to follow the routine. Take one capsule daily from the first pouch for 15 days, then switch to the second pouch for the next 15 days. Once you’ve finished both, repeat.
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.