A healthy gut microbiome supports overall wellbeing, including healthy digestion and sleep.
MoonBrew is the only nighttime drink with three specialized prebiotic fibers — Fibersol, XOS, and Inulin — to feed the microbiome that controls everything.
Your Gut Isn't Just a Digestion Organ. It's a Second Brain.
And for most people, it's been underfed their entire adult life.
500M
Neurons in your gut.
More than your entire spinal cord. The gut communicates directly with the brain via the vagus nerve — and sends far more signals up than it receives.
95%
Of serotonin produced in the gut.
Not your brain. Your gut. Serotonin regulates mood, appetite, and sleep onset. When the microbiome is depleted, serotonin production drops — and so does everything else.
2 Nights
To measurably reduce gut diversity.
Studies show just two nights of disrupted sleep measurably reduce microbial diversity. Sleep and gut health aren't two problems. They're one.
90%
Of Americans fiber deficient.
Linked to elevated cortisol, disrupted sleep, increased cravings, and reduced microbial diversity. Most people have never felt a truly balanced gut.
Fiber Deficiency Isn't Just About Digestion.
When your microbiome is underfed, beneficial bacteria decline, opportunistic bacteria take over, and short-chain fatty acid production drops — driving a cascade that touches every system in your body.
Elevated cortisol + anxiety: A healthy gut microbiome supports overall relaxation and sleep quality.*
Poor sleep + nighttime waking: Low serotonin from gut dysbiosis means less melatonin precursor. The signal to sleep deeply never fires properly.
Sugar cravings + metabolic disruption: Fiber supports digestive health and helps maintain a feeling of fullness.*
Puffiness + visible inflammation: Prebiotic fiber helps support a balanced gut microbiome.*
One Fiber Feeds One Type of Bacteria.
Three Fibers Rebuild the Whole System.
No competitor combines all three. This is the formulation difference.
"Most fiber supplements use one source. Moonbrew has three — Fibersol, XOS, and Inulin — which is why it actually works overnight."
Clinically shown to reduce bloating, improve stool frequency, and support healthy blood glucose — benefits psyllium husk cannot claim.
Specifically increases Bifidobacterium — directly linked to reduced cortisol, improved mood, and deeper sleep. Effective at just 1–2g.
Feeds the wider microbiome that XOS alone can't reach. Together, their combined effect is greater than either ingredient alone.
The Microbiome Rebuilds in Layers.
Here's the Timeline:
WEEK 1
More consistent digestion. Less bloating. Easier mornings.
Fibersol begins improving stool regularity. Bloating reduces as the fiber fermentation environment shifts. This is the most immediate and measurable change.
WEEK 2
Less nighttime waking. Waking up lighter and less puffy.
XOS is selectively increasing Bifidobacterium — GABA and serotonin precursor production starts to rise. The cortisol spike that was waking you at 3am begins to dampen.
WEEKS 3-4
Sustained calm, reduced cravings, a gut that actually feels regulated.
The broader microbiome — fed by Inulin — has diversified. SCFA production is up. Hunger hormones are recalibrated. The feedback loop that was keeping everything dysregulated has been interrupted.
Start Feeding Your Microbiome Tonight.
One scoop. 30 minutes before bed. Fibersol, XOS, and Inulin go to work during your peak repair window — so you wake up different.
Sleep + Fiber
Meet your all-in-one nighttime hero. MoonBrew’s MagnesiREM™ + superfood blend helps you drift off soundly, while prebiotic fiber works the night shift to help improve overall gut health.