Magnesium Glycinate 400mg — bottle front

Daily Essentials · The Hero SKU

Magnesium Glycinate 400mg

BestsellerNSF Certified

412 reviews · 4.9 average

400mg elemental magnesium as fully-reacted Albion bisglycinate. Highest-absorption form. Easy on the stomach.

$3260 servings · $0.53/day
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1
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    Key actives per serving

  • Magnesium bisglycinate (Albion TRAACS) — 400mg elemental Mg
  • Glycine carrier — supports GABAergic tone
  • Vegan capsule (HPMC), zero excipients beyond rice hull

The formula brief

Why glycinate — and why this dose.

Magnesium is the cofactor in over three hundred enzymatic reactions — sleep architecture, glucose handling, muscle contraction, calcium signaling — and roughly half of US adults fall short of the published RDA. We started with the glycinate form because the chelate moves through the gut intact, doesn't trigger the osmotic-laxative response that magnesium oxide and citrate do, and crosses the blood-brain barrier cleanly enough to support the calming, parasympathetic side of the autonomic nervous system.

Each two-capsule serving delivers 400mg of elemental magnesium from fully-reacted Albion TRAACS bisglycinate chelate — the gold-standard ingredient identity verified by mass-spec for chelate integrity, not just total magnesium content. No oxide blends, no buffered shortcuts, no magnesium stearate as a flow agent.

Most customers take two capsules in the evening as part of a wind-down protocol. Some athletes split the dose, taking one with breakfast and one before bed. Both work; the evening-only protocol is the one we recommend for new customers.

Supplement Facts

Single ingredient. Single chelate.
Verified by HPLC.

We list everything. No proprietary blends, no obfuscated "complex" dosing. The chelate identity is verified by mass-spectrometry on every batch — not just total magnesium content, which any oxide blend can pass.

NSF Certified for SportInformed Sport batch-testedcGMP 21 CFR 111VeganGluten-Free

Supplement Facts

Serving Size: 2 capsules
Servings Per Container: 60

Amount Per Serving% Daily Value
Magnesium (as bisglycinate chelate, Albion TRAACS)400 mg95%
Glycine (from chelate)2,000 mg†

† Daily Value not established.

Other Ingredients: Vegetable capsule (HPMC), rice hull concentrate. Contains no synthetic dyes, no magnesium stearate, no titanium dioxide. Contains no dairy, soy, gluten, nuts, shellfish, or egg. Manufactured in a facility that processes no major allergens.

01 · The protocol

How to take it.

The dosing windows our formulator recommends for the most common use cases. Start with the standard protocol; adjust based on what you notice in the first two weeks.

  • Standard protocol: 2 capsules 30-60 min before bed with a small amount of water.
  • Split dose: 1 capsule with breakfast + 1 capsule before bed if daytime magnesium feels supportive.
  • Hard-training athletes: stack with electrolytes during heavy training blocks (see Endurance Electrolytes).
  • Avoid taking within 2 hours of high-dose calcium or zinc — they compete for the same transporters.

02 · Why this form

Glycinate vs. the rest.

Glycinate vs. oxide: oxide is roughly 4% bioavailable and the rest pulls water into the colon. Glycinate is bound to the amino acid glycine, which moves through the gut intact via a separate transport pathway and avoids the laxative effect. The glycine carrier is itself calming. There's a reason every clinical-grade sleep formula chooses this form.

  • Oxide: ~4% bioavailable, primarily laxative effect.
  • Citrate: 25-30% absorbed, mild laxative at higher doses.
  • Bisglycinate (this product): highest absorption, no GI effect, crosses BBB for central nervous system support.
  • Threonate: niche cognitive use, much higher cost-per-mg, often dosed too low to matter on the magnesium side.

03 · Stack it

What it pairs with.

Magnesium is a cofactor in dozens of pathways downstream of other foundational supplements. These are the most common pairings our customers settle on.

  • + Vitamin D3: Mg is required for D3 activation. The most common pairing in our formulator's notes.
  • + Sleep Stack: Already shares the 400mg base. Don't double-dose if running both.
  • + Electrolytes: Hard-training athletes benefit from additional intra-workout magnesium. Pair, don't replace.
  • Avoid timing-stacking with: high-dose calcium or zinc (compete for transporters); take 2+ hours apart.

Specifications

The full ingredient and source profile.

We publish source identity (the branded ingredient, the supplier), not just generic listings. Everything below is on the label, the COA, and the website. No proprietary blends.

FormVegetable capsule (HPMC)
Serving size2 capsules
Servings per bottle60 (30-day supply)
Magnesium sourceAlbion TRAACS bisglycinate chelate
Elemental Mg400mg per serving (95% DV)
AllergensFree of dairy, soy, gluten, nuts
Manufactured inBoulder, CO · cGMP 21 CFR 111 facility
Third-party testedEurofins · COA on every batch

Third-party verified

Every batch. Every lot.
Published online.

Eurofins runs identity, potency, heavy metals, and microbiology on every batch we manufacture. We publish the COA for the lot number printed on your bottle — not a sample lot, not an average, the actual lot you received. If it doesn't meet label claim, it doesn't ship.

Batch MG-2026-04 · Assayed 2026-04-12 · 402.4mg elemental Mg per serving · Heavy metals below USP <232>


View this batch's COA →


412 reviews · 4.9 average

From the customers who use it daily.

I've cycled through every brand of magnesium on the shelf and most of them either gave me GI issues (oxide) or didn't seem to do anything (citrate). The glycinate from Meridian is the first one I've stayed on for more than three months. Sleep onset noticeably faster.

Andrew K.

Boulder, CO · Verified buyer · 4-month subscriber

My functional medicine doctor recommended a bisglycinate after a serum mag draw came back at 1.8. This is the one she now stocks at the clinic. Clean capsule, no aftertaste, no laxative reaction. The COA-per-batch transparency is what sold me.

Marisol V.

Portland, OR · Verified buyer · 8-month subscriber

Switched from a competitor that uses a magnesium oxide blend (even though they don't advertise it that way — check the panel). This one is genuinely glycinate. Down a star only because the capsules are big and I take two — would prefer a single 400mg cap if it can stay vegetarian.

Jordan H.

Austin, TX · Verified buyer · 2-month subscriber

Pairs well with

The rest of the foundation stack.

What our formulator recommends most often as the layered protocol on top of a 400mg-magnesium baseline.

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NSF Certified
For Sport
Third-Party Tested
COA · Every Batch
Vegan + GF
No Animal Inputs
Zero Fillers
No Synthetic Dyes

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