Magnesium Glycinate vs Magnesium Malate
Magnesium Glycinate and Magnesium Malate compared on absorption, gut tolerance, and real cost per dose — the cheapest of each pulled live from the Amazon US catalog.
Updated August 2026
Side by side
| Attribute | Glycinate | Malate |
|---|---|---|
| Absorption | High | High |
| GI tolerance | Gentle | Gentle |
| Bound to | Glycine (calming) | Malic acid |
| Typical timing | Evening | Daytime |
| Active deals tracked | 12 | 6 |
| Cheapest cost per dose | $0.05 (per serving) | $0.06 (per 1500 mg) |
Both are organic magnesium chelates that dissolve and absorb well — far better than magnesium oxide. There is no strong evidence that one is meaningfully better absorbed than the other.
Which to avoid / caveats
- Compare cost per elemental / active content, not the compound milligrams printed on the label — a bigger number on the front can hide less of what you actually absorb.
- The cheapest sticker price isn’t always the best value: our “cheapest per dose” figures normalise price across bottle sizes, so a larger count only wins if it truly costs less per serving.
Elemental magnesium: Magnesium Glycinate vs Magnesium Malate
By weight, Magnesium Glycinate is about 14% elemental magnesium (~140 mg per 1,000 mg), while Magnesium Malate is about 15% (~150mg per 1,000 mg). A higher elemental percentage isn’t automatically the better buy — a well-absorbed low-percentage form can beat a poorly-absorbed high-percentage one, so weigh this against absorption above and compare the “magnesium” line in the Supplement Facts panel, not the number on the front of the bottle.
It’s also why the per-serving costs above aren’t strictly comparable per milligram of elemental magnesium: some labels state the elemental amount while others list the heavier salt weight (so a bigger “mg” number can actually be less magnesium). For a true per-elemental-mg comparison, divide the price by the elemental milligrams shown on the Supplement Facts panel.
Magnesium GlycinateWell absorbed
Best for: Evening use, sleep, stress, and sensitive stomachs.
Best Magnesium Glycinate by cost per doseMagnesium Malate
Best for: Daytime use; popular with people targeting energy or muscle comfort (evidence limited).
Best Magnesium Malate by cost per doseCheapest Magnesium Glycinate
NEW
🍋 Lemon Balm
NatureBell Valerian Root for Sleep
Cost per serving
$0.05
300 servings · ~300-day supply
Well absorbed
$14.95Price from Amazon.com
Amazon.com 0
See the offer Cheapest Magnesium Malate
NEW
🌙 Magnesium
Magnesium Malate Capsules (420 Count) - 1
Cost per serving
$0.06
420 servings · ~420-day supply
$24.95Price from Amazon.com
Amazon.com 0
See the offer Frequently asked
Is magnesium malate better than glycinate?+
Neither is clearly better — both are well-absorbed, gentle magnesium forms. Glycinate is favored for sleep and calm thanks to its glycine; malate is often chosen for daytime use. The practical difference is the partner molecule and when you take it, not how well the magnesium absorbs.
Can you take magnesium malate at night?+
You can — it is gentle on the stomach. Some people prefer glycinate in the evening for its calming glycine and malate earlier in the day. Either way, both count toward the same daily magnesium total.
Is Magnesium Glycinate or Magnesium Malate cheaper per dose?+
The cheapest Magnesium Glycinate we track is $0.05 per serving; the cheapest Magnesium Malate is $0.06 per serving — so Magnesium Glycinate costs less per dose right now (August 2026).
Is Magnesium Glycinate or Magnesium Malate higher in elemental magnesium?+
By weight, Magnesium Glycinate is about 14% elemental magnesium (~140 mg per 1,000 mg) and Magnesium Malate is about 15% (~150 mg per 1,000 mg). A higher elemental percentage isn't automatically better value — absorption differs by form, so weigh the "magnesium" line in the Supplement Facts panel against price and absorption, not the front-label number.
How much Magnesium do you need per day?+
RDAs depend on age and sex. Adult men need 400-420 mg; adult women need 310-320 mg. Pregnancy is 350-400 mg and lactation 310-360 mg. Children range from 80 mg (1-3 years) to 240 mg (9-13 years); infants have AIs of 30-75 mg. — per the NIH Office of Dietary Supplements; general information, not medical advice.
Can you take too much Magnesium?+
Yes. The Tolerable Upper Intake Level for supplemental magnesium is 350 mg for adults. High supplement or medication doses can cause diarrhea, nausea, and abdominal cramping. Very high doses cause toxicity: hypotension, vomiting, difficulty breathing, irregular heartbeat, and cardiac arrest; fatal hypermagnesemia has occurred. — per the NIH Office of Dietary Supplements; general information, not medical advice.
Dosage & safety answers sourced from the NIH Office of Dietary Supplements. General information, not medical advice.
What the research says
Too much magnesium from food does not pose a health risk in healthy individuals because the kidneys eliminate excess amounts, but high doses from dietary supplements or medications often cause diarrhea, nausea, and abdominal cramping. The Tolerable Upper Intake Level (UL) for supplemental magnesium is 350 mg/day for adults — per the NIH Office of Dietary Supplements.
Groups more likely to be at risk of magnesium inadequacy include people with gastrointestinal diseases (such as Crohn's disease and celiac disease), people with type 2 diabetes, people with alcohol dependence, and older adults. Early signs and symptoms of deficiency include loss of appetite, nausea, vomiting, fatigue, and weakness; as it worsens, numbness, tingling, muscle contractions and cramps, seizures, personality changes, abnormal heart rhythms, and coronary spasms can occur, and severe deficiency can cause hypocalcemia or hypokalemia — per the NIH Office of Dietary Supplements.
Related
Best Magnesium Glycinate by cost per doseBest Magnesium Malate by cost per doseMagnesium Glycinate dosage & factsMagnesium Malate dosage & factsSupplement price-spread study
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References & sources
- Health Professional fact sheet — NIH Office of Dietary Supplements
- USP Verified product participants — U.S. Pharmacopeia
- NSF certified products — NSF
We link primary sources and paraphrase their findings — never copy their text, tables, or images. Cost-per-dose figures are our own first-party catalog data.