Glycinate is the calm one
Magnesium bound to glycine, an amino acid that quiets a racing mind. It's the form people reach for when the goal is sleep, not a bowel movement.*
Chelated · Highly Absorbable
The magnesium that actually puts you to sleep.
Serni Magnesium Glycinate is the gentle, highly-absorbable form your body craves — for deeper sleep, calmer nights, and zero grogginess. No melatonin hangover. No stomach upset.
12,500+ 5 star reviews
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- Vegan
- Non-GMO
- Third-Party Tested
- Made in the USA
- Marisa Thompson
First full night in months
I used to wake up at 3am like clockwork. Three capsules before bed and I sleep straight through — and I actually feel like a person in the morning.
- Daniel Rivera
No melatonin fog
Melatonin left me heavy until noon. This is different — I drift off easier and wake up clear-headed. That was the whole thing I wanted.
- Priya Sharma
Finally, magnesium my stomach likes
Citrate wrecked me. Glycinate has been completely gentle. Two weeks in and my evenings feel calmer.
- Kevin Miller
The wind-down is real
About half an hour after taking it my shoulders drop and my brain stops running laps. Simple as that.
- Alicia Bennett
My nightly ritual now
Three capsules, lights low, phone down. It's become the signal that the day is over. Sleeping deeper than I have in years.
- Jonah Williams
Stress sleeps better too
Work has been brutal and I still fall asleep. I didn't expect the calm during the day part, but I'll take it.
- Elena Kim
Woke up rested, not groggy
No hangover feeling, no dependence, no weird dreams. Just easier nights.
- Chris Davis
Bought a second bottle immediately
Skeptical at first. By night four I stopped checking the clock. Subscribed and haven't looked back.
- Naomi Foster
Quality you can feel
Clean label, third-party tested, no fillers I can't pronounce. And it actually does what it says.
- Ryan Patel
Better than anything I've tried
Tried every sleep gummy on the shelf. This is the only one that made a difference I could notice a week later.
- Marisa Thompson
First full night in months
I used to wake up at 3am like clockwork. Three capsules before bed and I sleep straight through — and I actually feel like a person in the morning.
- Daniel Rivera
No melatonin fog
Melatonin left me heavy until noon. This is different — I drift off easier and wake up clear-headed. That was the whole thing I wanted.
- Priya Sharma
Finally, magnesium my stomach likes
Citrate wrecked me. Glycinate has been completely gentle. Two weeks in and my evenings feel calmer.
- Kevin Miller
The wind-down is real
About half an hour after taking it my shoulders drop and my brain stops running laps. Simple as that.
- Alicia Bennett
My nightly ritual now
Three capsules, lights low, phone down. It's become the signal that the day is over. Sleeping deeper than I have in years.
- Jonah Williams
Stress sleeps better too
Work has been brutal and I still fall asleep. I didn't expect the calm during the day part, but I'll take it.
- Elena Kim
Woke up rested, not groggy
No hangover feeling, no dependence, no weird dreams. Just easier nights.
- Chris Davis
Bought a second bottle immediately
Skeptical at first. By night four I stopped checking the clock. Subscribed and haven't looked back.
- Naomi Foster
Quality you can feel
Clean label, third-party tested, no fillers I can't pronounce. And it actually does what it says.
- Ryan Patel
Better than anything I've tried
Tried every sleep gummy on the shelf. This is the only one that made a difference I could notice a week later.
- Marisa Thompson
First full night in months
I used to wake up at 3am like clockwork. Three capsules before bed and I sleep straight through — and I actually feel like a person in the morning.
- Daniel Rivera
No melatonin fog
Melatonin left me heavy until noon. This is different — I drift off easier and wake up clear-headed. That was the whole thing I wanted.
- Priya Sharma
Finally, magnesium my stomach likes
Citrate wrecked me. Glycinate has been completely gentle. Two weeks in and my evenings feel calmer.
- Kevin Miller
The wind-down is real
About half an hour after taking it my shoulders drop and my brain stops running laps. Simple as that.
- Alicia Bennett
My nightly ritual now
Three capsules, lights low, phone down. It's become the signal that the day is over. Sleeping deeper than I have in years.
- Jonah Williams
Stress sleeps better too
Work has been brutal and I still fall asleep. I didn't expect the calm during the day part, but I'll take it.
- Elena Kim
Woke up rested, not groggy
No hangover feeling, no dependence, no weird dreams. Just easier nights.
- Chris Davis
Bought a second bottle immediately
Skeptical at first. By night four I stopped checking the clock. Subscribed and haven't looked back.
- Naomi Foster
Quality you can feel
Clean label, third-party tested, no fillers I can't pronounce. And it actually does what it says.
- Ryan Patel
Better than anything I've tried
Tried every sleep gummy on the shelf. This is the only one that made a difference I could notice a week later.
- Marisa Thompson
First full night in months
I used to wake up at 3am like clockwork. Three capsules before bed and I sleep straight through — and I actually feel like a person in the morning.
- Daniel Rivera
No melatonin fog
Melatonin left me heavy until noon. This is different — I drift off easier and wake up clear-headed. That was the whole thing I wanted.
- Priya Sharma
Finally, magnesium my stomach likes
Citrate wrecked me. Glycinate has been completely gentle. Two weeks in and my evenings feel calmer.
- Kevin Miller
The wind-down is real
About half an hour after taking it my shoulders drop and my brain stops running laps. Simple as that.
- Alicia Bennett
My nightly ritual now
Three capsules, lights low, phone down. It's become the signal that the day is over. Sleeping deeper than I have in years.
- Jonah Williams
Stress sleeps better too
Work has been brutal and I still fall asleep. I didn't expect the calm during the day part, but I'll take it.
- Elena Kim
Woke up rested, not groggy
No hangover feeling, no dependence, no weird dreams. Just easier nights.
- Chris Davis
Bought a second bottle immediately
Skeptical at first. By night four I stopped checking the clock. Subscribed and haven't looked back.
- Naomi Foster
Quality you can feel
Clean label, third-party tested, no fillers I can't pronounce. And it actually does what it says.
- Ryan Patel
Better than anything I've tried
Tried every sleep gummy on the shelf. This is the only one that made a difference I could notice a week later.
Formulated for people who are done being tired
- Third-party tested
- GMP-certified facility
- Made in the USA
- Vegan · Non-GMO
The 3AM problem
Falling asleep was never the problem. Staying asleep is.
You drift off fine. Then 3:07am arrives and your brain files its report — the email, the invoice, the thing you said in 2014. Wired but exhausted.
So you try melatonin, and you wake up under a wet blanket. You try a cheap magnesium off the shelf, and your stomach makes the decision for you by morning.
The mineral wasn't wrong. The form was.
Why glycinate
Not all magnesium is the same.
Most magnesium supplements use the cheap forms that upset your stomach. Serni doesn't.
Highly absorbable
Chelated magnesium is the form your body actually recognizes and uses — so more of what's on the label ends up where you need it.
Gentle on your stomach
No laxative effect like citrate or oxide. Take it nightly without negotiating with your gut.*
The science
Backed by the research.
What the studies say about magnesium.
Most adults fall short.
Nearly half of Americans take in less magnesium from food and beverages than the estimated average requirement.
Read the studyNIH Office of Dietary Supplements
Magnesium & sleep.
In a randomized placebo-controlled trial, adults taking magnesium bisglycinate saw a greater reduction in insomnia severity scores than placebo.
Read the studySleep Science, 2025 — randomized controlled trial
Magnesium & everyday stress.
Studies have explored magnesium's role in supporting calm and easing day-to-day stress.
Read the studyNutrients, 2017 — systematic review
Why chelated forms absorb better.
Organic, chelated magnesium forms like glycinate are generally better absorbed than inorganic forms such as magnesium oxide.
Read the studyNutrition, 2021 — systematic review
*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.
Benefits
What 30 nights of Serni feels like.
Fall asleep faster, sleep deeper*
Magnesium supports the nervous system's shift into rest mode, so your body stops idling in fifth gear and the night stays whole.*
- Supports deeper, less broken sleep*
- No melatonin, no sedatives
Eases stress & promotes calm*
Glycine is a calming amino acid. Paired with magnesium, it takes the edge off the evening wind-down — the kind of calm you can feel before your head hits the pillow.*
- Supports a settled, quiet mind*
- Useful on high-stress days, not just at night*
Gentle on your stomach — no laxative effect*
Citrate and oxide are cheap for a reason. Chelated glycinate absorbs instead of sitting in your gut, so nightly use stays comfortable.*
- No urgent 6am wake-up calls
- Take it every night without dread
Non-habit forming — wake up clear, not groggy*
Magnesium is an essential mineral, not a sedative. You're replenishing something your body wants, so mornings feel like mornings again.*
- No dependency, no tolerance build-up*
- Clear-headed mornings*
Start Sleeping Better
60-night money-back guarantee · Free shipping over $50
Supplement Facts & Details
What's inside, exactly.
- Vegan
- Non-GMO
- Third-Party Tested
- Made in the USA
Supplement Facts
Serving Size:3 Capsules
Servings Per Container:30
Magnesium(from 2,500mg Magnesium Glycinate)
275mg65% DV
* Percent Daily Values are based on a 2,000 calorie diet.
Other Ingredients
Hypromellose (capsule), Magnesium Stearate, Silicon Dioxide, Rice Flour.
Suggested Use
As a dietary supplement, take three (3) capsules once daily, or as directed by your healthcare professional.
Warnings
Do not exceed recommended dose. Pregnant or nursing mothers, children under 18, and individuals with a known medical condition should consult a physician before use. Keep out of reach of children. Do not use if the safety seal is damaged or missing. Store in a cool, dry place.
The nightly ritual
Three capsules. Same time. Every night.
Step 1
Take 3 capsules
About 30 minutes before bed, with water.
Step 2
Feel calm settle in
The wind-down gets easier. The scroll gets boring.*
Step 3
Wake up rested
Clear-headed, not groggy. Then do it again tonight.*
Email sernishop@gmail.com and we'll handle it — no return shipping, no hoops. Read the refund policy.
Made properly
Made in the USA, third-party tested, formulated for people who are done being tired.
- Vegan
- Non-GMO
- Third-Party Tested
- Made in the USA
FAQ
Questions, answered calmly.
Better sleep starts tonight.
One bottle. Three capsules. Sixty nights to decide — with a full refund if it isn't everything you hoped.
Start Sleeping Better60-night money-back guarantee · Free shipping over $50
