After Two Years on Sleep Drinks, a Hopkins Neurologist Showed Me the Half I Was Missing
Magnesium handles falling asleep. Creatine is what repairs you while you're there, and NHANES found most adults are running on a third of optimal.
For the past two years I've cycled through magnesium glycinate, l-theanine, melatonin gummies, ashwagandha capsules. The whole sleep-stack circuit. Nights got easier. Mornings stayed flat: foggy, slow, vaguely sore.
Then I interviewed Dr. Charlene Gamaldo last spring (Professor of Neurology at Johns Hopkins, runs their sleep center). The way she described it was a split I hadn't seen before: the relaxation actives put you to sleep; the recovery substrate is what your body uses while you're already there. I'd never heard a sleep doctor talk about creatine.
That conversation is why I'm writing this. The product that ended up on my counter is below.
1.Most sleep stacks only solve the falling-asleep half
Magnesium glycinate. L-theanine. Apigenin. Passionflower. Melatonin. They all work the same way. They down-regulate the nervous system so you can fall asleep. That's the getting-to-sleep half of the job.
The other half is what your body is supposed to be doing while you're already asleep. Repairing muscle tissue. Clearing metabolic waste from the brain. Rebuilding the energy reserves you'll spend tomorrow. None of those happen passively. They need substrate.
The substrate most of us are running low on isn't magnesium.
There's a substrate question magnesium doesn't answer.
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2.New NHANES research: low creatine intake, 30% higher odds of sleep disturbance
This is the stat that flipped my read on creatine. A 2025 paper (Baltic et al., Sage Journals) ran the NHANES 2007-2008 dataset and found people in the lowest creatine-intake bracket had 1.30 times the odds of disturbed sleep compared to those in the highest bracket. (95% CI 1.13 to 1.48, n approximately 19,000.)
Translated: low dietary creatine and broken sleep aren't unrelated. They're linked, in nearly twenty thousand Americans.
The mean American creatine intake in that dataset was 0.88 grams per day. The amount your body actually needs to keep its phosphocreatine pool full is roughly 3 grams. Most of us are running on a third of optimal.
3.Creatine isn't a gym thing. It's brain and recovery fuel that loads while you sleep.
This was the part I had to unlearn. I'd assumed creatine was a fitness-store powder. Bro stacks. Body comp. Irrelevant to me.
The neurology research is a different picture. Creatine is the ATP cofactor in cells with high energy demand. Muscle, yes. But also the brain. A 2023 review in Sports Medicine found creatine supplementation improves cognitive performance under sleep deprivation.
The brain-specific evidence goes further back. Rae et al. (2003, Proceedings of the Royal Society B) gave 5g of creatine daily to vegetarians for six weeks and measured a measurable improvement in working memory and intelligence-test performance. The brain runs on roughly the same energy currency as the quadricep. Both replenish overnight.
If you don't lift, you still need it. The brain doesn't take a day off.
The brain runs on roughly the same fuel as the quad. It just doesn't tell you when it's running low.
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4.Why 5 grams of creatine monohydrate, every night
The dose isn't a brand decision. The vast majority of creatine studies, including the NIH-funded ones, use 3 to 5 grams of creatine monohydrate as the daily maintenance dose. Below that, phosphocreatine stores never saturate. Above 5g, the marginal benefit flatlines.
Sleep + Creatine puts 5 grams in every scoop. Same dose Examine.com lists as evidence-based. Same dose any decent sports doctor would prescribe.
Sitting around it are the relaxation actives. Magnesium glycinate, magnesium taurate, L-theanine, GABA, passionflower, zinc, apigenin, tart cherry. None of those, on their own, do what creatine does.
5.The three doctors behind the formula (and how I checked)
Johns Hopkins
Northwell Health
On the product page, MoonBrew lists three clinicians who endorsed the formula. I checked each one:
Dr. Charlene Gamaldo, MD. Professor of Neurology and Medical Director of the Johns Hopkins Center for Sleep & Wellness.
Dr. Roshini Malaney, DO. Cardiologist at Staten Island University Hospital, Northwell Health.
Harris Donnelly, RN. Clinical nurse on MoonBrew's medical advisory roster.
Three specialties. Neurology, cardiology, nursing. Real names and verifiable credentials all the way through.
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I've had insomnia for 25 years and I'm finally having restful nights of sleep.
Kristen O., Verified MoonBrew customer6.What I now keep on my counter (and what I cleared out)
My nightstand had four bottles on it last summer. Magnesium glycinate, melatonin, l-theanine, and a tube of magnesium oil my friend Helen sent me from her chiropractor in Park Slope. (Yes, that one. She loves him.) The whole stack ran me about $42 a month. None of it touched the recovery side.
What I have on the counter now is one tub. Twenty-five servings, caramel chocolate, mixed in eight ounces of milk or oat milk before bed. It runs around sixty bucks a month on the subscription. They throw in the little wooden frother on the first order.
Not the cheapest single-ingredient option. The simplest. And the 60-day guarantee handles the "what if it doesn't work for me" question the way most direct-from-Amazon supplement brands don't.
The other four bottles are in the recycling.
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How I think about it now
MoonBrew Sleep + Creatine
both halves, one drink
- 5g creatine monohydrate, every night, the clinically researched dose
- MagnesiREM blend (mag glycinate + taurate) plus L-theanine, GABA, passionflower
- Zero melatonin, zero morning grog
- Recommended by 1,000+ clinicians on FrontrowMD
- $58 subscription, free frother, 60-day guarantee
A four-bottle sleep stack
half the job, four times the bottles
- Magnesium glycinate alone solves only the falling-asleep half
- Melatonin = morning grogginess, receptor downregulation
- No creatine = no overnight muscle or brain repair substrate
- Four bottles, four shipping fees, four expiration dates
- ~$42 a month and a nightstand that looks like a pharmacy
People in the lowest creatine-intake bracket had 1.30× the odds of disturbed sleep compared to those in the highest bracket.NHANES 2007–2008 · Baltic et al., 2025
What real MoonBrew customers are saying
Finally off melatonin
I can finally sleep without taking melatonin. Was on the 5mg gummies for two years and could feel them stop working. MoonBrew handles the falling-asleep half just as well, no morning hangover. Three weeks in, sleeping straight through.
Finally a restful night's sleep
I've had insomnia for 25 years and finally having a restful night's sleep. I drink it about an hour before bed and within 30 minutes I can feel myself relaxing into the evening.
Wake up refreshed
Wake up refreshed after years of battling insomnia. The chocolate flavor is great. I usually had to push through the morning fog with two coffees - now I'm awake before the kettle even boils.
Worth the price once you do the math
Took a couple weeks to feel the difference, then it was hard to ignore. Only docked a star because the price feels steep at first. Did the math though, it's cheaper than the four-bottle sleep stack I was running, so I get it.
The drink that ended up on my counter handles the part the rest of my stack was missing.
Most sleep advice is shaped like a list of supplements to try. Better magnesium. Better melatonin. Better botanicals. What none of them speak to is what your body is actually supposed to be doing while you're already asleep.
If your sleep has been getting you through the night but not really rebuilding you, this is the one I'd recommend.
Common questions
Is this just creatine with a sleep label slapped on it?
No. The formula leads with the relaxation actives (the MagnesiREM blend = magnesium glycinate + taurate, plus L-theanine, GABA, passionflower, zinc, apigenin, tart cherry). Creatine is added at the clinically researched 5g dose because that's the dose your body needs to keep its phosphocreatine pool full overnight.
Will the creatine make me bulk up?
No. Creatine isn't anabolic on its own, it's an ATP cofactor. Without resistance training it doesn't add muscle. What it does do, even in non-lifters, is support overnight muscle repair, brain energy, and (per the 2025 NHANES paper) lower the odds of sleep disturbance.
Is there melatonin in it?
No. None of MoonBrew's drinks contain melatonin. The relaxation comes from the magnesium + GABA + passionflower stack, which doesn't carry the morning-grog risk melatonin does.
What does it cost compared to buying creatine + magnesium separately?
Bulk creatine monohydrate: ~$15/month. Decent magnesium glycinate: ~$18/month. L-theanine: ~$10/month. That's $43+ before you add the rest of the actives. Sleep + Creatine on subscription is $58 with the frother and free shipping. Slightly more than buying ingredients in isolation, simpler than running 4 bottles.
What's the dose?
5 grams of creatine monohydrate per scoop. 250mg L-theanine. 57mg of the MagnesiREM blend (magnesium glycinate + taurate). One scoop in 8oz of milk or oat milk, ~30 to 60 minutes before bed.
What if it doesn't work for me?
60-day satisfaction guarantee. Email hi@moonbrew.co and they'll handle it. Trustpilot reviewers consistently flag MoonBrew's customer service as a real strength.
Is it third-party tested?
Yes. MoonBrew is third-party tested for purity and label accuracy. The formula is recommended by 1,000+ clinicians on FrontrowMD, including sleep specialists.
Try the half you've been missing
Sleep + Creatine, both halves of the job
Sleep + Creatine starts at $58 on subscription, $68 one-time. 25 servings per tub, caramel chocolate flavor, no melatonin. The MagnesiREM blend handles the falling-asleep half. 5g of creatine monohydrate handles the recovery half. Free frother on your first order ($20 value). Free shipping on subscriptions.
60 nights to know. Cancel anytime. Keep the frother either way.
Try Sleep + Creatine →Free frother · Free shipping on subscription · 60-day satisfaction guarantee · No melatonin