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Magnesium Glycinate Capsules

  • 400mg of magnesium, 95% of your Daily Value, in two highly absorbable forms*
  • Supports relaxation and calm so you can wind down at night*
  • Magnesium glycinate, bound to glycine and gentle on your stomach*
  • Melatonin-free and non-habit-forming, no morning grogginess*
  • Third-party tested, Non-GMO, gluten-free, made in a GMP-certified facility

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Join the 200,000+ people that trust Slumber

  • 3rd Party Tested
  • Melatonin-FreeMelatonin-Free
  • Vegan
  • USA Made
Third-Party Lab Tested
GMP FDA-Approved Facility
Doctor & Nutritionist Formulated
Non-GMO, Gluten-Free, Dairy-Free

Start with the mineral

The Mineral Your Body Runs On

Magnesium quietly powers hundreds of processes inside you, from steady nerves to the muscle relaxation that lets you wind down at night. Run low, and sleep is often the first thing to feel it.*

600+

enzymatic reactions in the body depend on magnesium

de Baaij et al., Physiological Reviews, 2015

Two forms, chosen on purpose

Two Forms, One Purpose

We built Magnesium Glycinate Complex around one idea: give your body magnesium it can actually absorb and put to use. Every serving pairs two premium forms, led by magnesium bisglycinate, magnesium bound to glycine, the same calming amino acid your body uses to settle at night.*

Magnesium Glycinate powder

For Calm

350mg

Magnesium Glycinate

  • Supports relaxation and calm*
  • Highly absorbable, bound to glycine
  • Gentle on your stomach
Sucrosomial Magnesium capsule

For Absorption

50mg

Sucrosomial® Magnesium

  • Patented delivery for better absorption*
  • Smooth, with no metallic taste
  • Easy on digestion
400mgtotal magnesium · 95% Daily Value

Two complementary forms. No cheap oxide, no hidden dose.*

The research behind the form

Backed By Research

In one of the largest placebo-controlled sleep trials of magnesium to date, people taking magnesium bisglycinate improved more than those on placebo, and nearly twice as many reached a meaningful improvement in their sleep. Almost no one reported side effects. It works the way magnesium should, steadily, not like a sedative.*

2x

as many reached a meaningful sleep improvement vs placebo

93%

reported no side effects

Schuster et al., Nature and Science of Sleep, 2025. Research on the magnesium bisglycinate form. Individual results vary.

Magnesium capsule
Person resting peacefully at night

Why it matters

Better Days Begin At Night

Magnesium is the quiet groundwork. When your body has what it needs to settle, the night does its work, and you wake up more like yourself.*

Better Sleep Builds Over Time

Calm bedroom at night
48%

of US adults do not get enough magnesium

Most of us run low, and it slips further with age. Rebuilding your stores takes consistent, nightly use.*

NIH Office of Dietary Supplements

What To Expect

Week 1

Easier Wind-Downs

Relaxing into the night starts to feel more natural.*

Weeks 2-4

Stores Rebuild

As your magnesium replenishes, the benefit grows.*

Month 2+

Your New Baseline

Calm, restful nights settle into a routine.*

Results build with consistent nightly use. Individual results may vary.

Magnesium Glycinate Complex bottle

Full transparency

What's On The Label

See exactly what's inside every capsule.

Supplement Facts

Serving Size: 3 Capsules · Servings Per Container: 30

% Daily Value

Magnesium 400mg  95%
Magnesium Glycinate 350mg
Sucrosomial® Magnesium 50mg

Other ingredients: vegetable capsule (hypromellose), microcrystalline cellulose, silicon dioxide. No oxide. No artificial fillers.

  • 400mg of magnesium, 95% of your Daily Value
  • Two premium, highly absorbable forms
  • Melatonin-free and non-habit-forming
  • Third-party tested, Non-GMO, gluten-free
  • Made in a GMP-certified facility
Magnesium Glycinate Complex bottle
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Top FAQ's

Will this work without melatonin?
Yes. Magnesium supports your body's own sleep mechanisms instead of adding a hormone. It is non-habit-forming and made for nightly use, so you wind down naturally and wake without the grogginess melatonin can leave behind.*
I already take magnesium. How is this different?
Many supplements use cheap oxide your body barely absorbs. This is 400mg from two premium, highly absorbable forms, with nothing you do not need.
Will it upset my stomach?
Both forms were chosen to be easy on digestion. Glycinate is bound to a calming amino acid, so you avoid the loose stools common with cheaper magnesium.*
How many capsules, and when?
Take 3 capsules with water 30 to 60 minutes before bed. One bottle is a 30-night supply.
How long until I notice a difference?
Many people feel calmer in the first week. Because most adults are running low, give it 2 to 4 weeks of nightly use to fully rebuild your magnesium.*

Want the deeper science? Read more on magnesium and sleep in our journal

*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.