Label arithmetic · NIH DSLD snapshot 2026-08-10
How much magnesium is in magnesium malate? 12.6–15.5% by weight, so 100 mg of magnesium takes 644–792 mg of malate
12.6–15.5% of magnesium malate is magnesium: 100 mg takes 644–792 mg of salt, 0.9–1.1 size 00 capsules. From $0.0460 per 100 mg; 20 labels inside.
Magnesium malate is 12.6–15.5% elemental magnesium, so 100 mg of magnesium needs 644–792 mg of compound, about 0.9–1.1 size 00 capsules at 0.8 g/mL powder density. 0 of 9 capsule labels naming malate alone exceed size 000. Cheapest by declared elemental magnesium among 4 ranked offers is $0.0460 per 100 mg; median $0.1052 (n=4, band unstable); prices observed 2026-10-26 to 2026-11-02.
computed from chemical formula
Chart data
| Displayed chart text |
|---|
| oxide |
| 60.3% |
| hydroxide |
| 41.7% |
| carbonate |
| 24.8–28.8% |
| chloride |
| 12.0–25.5% |
| sulfate |
| 9.9–20.2% |
| citrate |
| 11.3–16.2% |
| aspartate |
| 7.5–15.6% |
| malate |
| 12.6–15.5% |
| glycinate |
| 11.8–14.1% |
| glycerophosphate |
| 12.5% |
| lactate |
| 10.2–12.0% |
| taurate |
| 8.9% |
| L-threonate |
| 8.3% |
| orotate |
| 7.3% |
| gluconate |
| 5.9% |
Data release 2026-08-10-f441aa9f · registry snapshot 2026-08-10 · latest price observation 2026-11-02 · chemistry 2026-10-17
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How much elemental magnesium is actually in 100, 200 or 400 mg of malate?
Magnesium malate is 12.6–15.5% elemental magnesium by mass (MgC₄H₄O₅, molar mass 156.38). Magnesium malate has a molar mass of 156.38 against magnesium's 24.305, so 12.6–15.5% of its mass is magnesium. One caveat: anhydrous 15.54% or dihydrate 12.63% (192.41 g/mol), so the figures below are given as a range wherever that matters. Every 100 mg of elemental magnesium from it needs 644–792 mg of the compound, calculated 2026-10-17.
computedThe filed salt can have more than one hydration state, so its elemental fraction is shown as a range.
Chart data
| Displayed chart text |
|---|
| malate |
| 2,574 · 3,167 |
| oxide |
| 663 |
| Elemental magnesium | malate required | Size 00 capsules that much powder fills |
|---|---|---|
| 100 mg | 644–792 mg | 1–2 size 00 capsules (0.9–1.1 capsules' worth of powder) |
| 200 mg | 1,287–1,584 mg | 2–3 size 00 capsules (1.8–2.2 capsules' worth of powder) |
| 400 mg | 2,574–3,167 mg | 4–5 size 00 capsules (3.5–4.3 capsules' worth of powder) |
anhydrous 15.54% or dihydrate 12.63% (192.41 g/mol)
Source · Chemical formula and atomic masses · Calculated 2026-08-10; powder density 0.8 g/mL, the top of the usual 0.6–0.8 range · release 2026-08-10-f441aa9f · CSV · method
Estimated salt mass versus assumed capsule capacity
0 of 9 capsule labels naming malate alone are above the assumed size 000 capacity at powder density 0.8 g/mL, against 8 of 137 capsule labels across the audited registry. 7 fit size 0 or 00 and 2 need size 000. This is computed with a stated assumption of powder density 0.8 g/mL, the top of the usual 0.6–0.8 range and the most favorable mass per capsule.
computed with assumption9 capsule labels naming malate alone can be checked against capsule sizes.
Chart data
| Displayed chart text |
|---|
| malate |
| fits 7 of 9 |
| needs 000 2 of 9 |
| exceeds 0 of 9 |
| all audited |
| fits 82 of 137 |
| needs 000 47 of 137 |
| exceeds 8 of 137 |
| Mass budget verdict | Labels |
|---|---|
| Fits size 0 or 00 | 7 of 9 |
| Needs size 000 | 2 of 9 |
| Exceeds size 000 | 0 of 9 |
A size 00 capsule holds about 730 mg of powder at powder density 0.8 g/mL, the top of the usual 0.6–0.8 range; a size 000 about 1,100 mg.
Source · NIH DSLD labels; mass balance · Recognized salt only; 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
Is a label called malate really malate, or mixed with another salt?
0 of 20 labels naming malate also name another form as of 2026-08-10. The table counts partner names on filed labels; a named blend does not establish the elemental contribution of each salt. Naming one salt is not the same as fitting it: 0 of 9 capsule labels naming malate alone exceed size 000. Open the full label list to inspect individual records.
measuredA defined molecular formula permits a calculated fraction.
| Other named form | Labels |
|---|---|
| No other named form | 20 labels reviewed |
Source · NIH DSLD magnesium rows · Labels naming this salt; 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
I need 200 mg of actual magnesium. What changes in compound weight and capsules between malate and other forms?
For 200 mg of elemental magnesium, malate needs 1,287–1,584 mg of compound, against oxide at 332 mg. Size 00 holds about 730 mg at powder density 0.8 g/mL, the top of the usual 0.6–0.8 range. Each row uses the stated elemental fraction; hydration ambiguity stays a range, and any price comparison remains within a single salt.
computed with assumption| Salt | Elemental fraction | Compound for 200 mg | Size 00 capsules |
|---|---|---|---|
| Magnesium malate | 12.6–15.5% | 1,287–1,584 mg | 2–3 size 00 |
| Magnesium glycinate | 11.8–14.1% | 1,418–1,691 mg | 2–3 size 00 |
| Magnesium citrate | 11.3–16.2% | 1,238–1,770 mg | 2–3 size 00 |
| Magnesium oxide | 60.3% | 332 mg | 1 size 00 |
Source · Chemical formulas and capsule capacity · Calculated 2026-08-10; powder density 0.8 g/mL, the top of the usual 0.6–0.8 range · release 2026-08-10-f441aa9f · CSV · method
What does malate cost per 100 mg of elemental magnesium, and which label is cheapest by declared elemental magnesium?
Cheapest by declared elemental magnesium among 4 ranked offers is $0.0460 per 100 mg; median $0.1052 (n=4, band unstable); prices observed 2026-10-26 to 2026-11-02. One offer means one ASIN and observation date; 1 observations are on review; their pack or dose has not passed the match checks. The ranked price uses the label's declared elemental amount.
computed4 unique offers are ranked; with fewer than five, the band between the 25th and 75th percentiles is marked unstable.
Chart data
| Displayed chart text |
|---|
| n=4, band unstable |
| P25 $0.0739 |
| P75 $0.1402 |
| median $0.1052 |
| Rank | Label | EC100 | Match and observation |
|---|---|---|---|
| 1 | Seeking Health Magnesium Malate 500 mg | $0.0460 per 100 mg | confirmed; 2026-11-02 · $23.00 |
| 2 | BulkSupplements.com Magnesium Malate Capsules 400 mg | $0.0832 per 100 mg | confirmed; 2026-11-02 · $19.96 for 4 units |
| 3 | Trace Minerals Research Stress-X Magnesium Powder Lemon Lime | $0.1272 per 100 mg | verified; 2026-11-02 · $19.99 |
| 4 | Thorne Calcium-Magnesium Malate | $0.1792 per 100 mg | confirmed; 2026-11-02 · $43.00 for 240 units |
| On review | Trace Minerals Research Stress-X Magnesium Powder Lemon Lime | No ranked EC100 | Match review pending; 2026-11-02 |
Verified: a row matched to the label by hand in August 2026 that passes every automatic check. Confirmed: brand, salt and dose match the label in the September 2026 check. Only these two are ranked; rows on review are not.
n=4, band unstable
Source · Amazon via licensed data provider · Unique ASIN and observation date; prices observed 2026-10-26 to 2026-11-02 · release 2026-08-10-f441aa9f · CSV · method
What else is in malate labels, including stearate, shells and fillers?
8 named excipients appear in the top displayed list among 20 labels naming malate as of 2026-08-10. A listed ingredient is a filed name, not a quantified mass; open the underlying label to check context and capsule material.
measured
Chart data
| Displayed chart text |
|---|
| silicon dioxide |
| 13 |
| magnesium stearate |
| 12 |
| microcrystalline cellulose |
| 8 |
| stearic acid |
| hypromellose |
| 7 |
| cellulose |
| 5 |
| croscarmellose sodium |
| 3 |
| gelatin |
| microcrystalline |
| Filed ingredient | Labels |
|---|---|
| silicon dioxide | 13 of 20 |
| magnesium stearate | 12 of 20 |
| microcrystalline cellulose | 8 of 20 |
| stearic acid | 8 of 20 |
| hypromellose | 7 of 20 |
| cellulose | 5 of 20 |
| croscarmellose sodium | 3 of 20 |
| gelatin | 3 of 20 |
Source · NIH DSLD full label ingredient fields · Labels naming this salt; 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
What did studies measure about absorption and side effects for malate?
3 studies in our PubMed checked registry measured outcomes involving malate as of 2026-08-10. The table names each design and measured outcome, against no pooled comparison across different study methods. No study in our registry of 16 measured side effects for malate as of 2026-08-10.
measured3 studies in this registry measured outcomes involving malate.
| Year | Study design and measured outcome | PubMed |
|---|---|---|
| 2020 | Absorption of several magnesium compounds profiled across doses rather than at a single dose. Absorption is treated as dose-dependent, so a comparison made at one dose need not hold at another , which is why single-dose head-to-head results disagree. | PMID 30761462 |
| 2019 | Single-dose administration of 400 mg/70 kg magnesium as one of five compounds (magnesium sulfate, magnesium oxide, magnesium acetyl taurate, magnesium citrate, magnesium malate) to Sprague Dawley rats, with a control group, followed by time-dependent tissue and serum sampling. Time-dependent magnesium absorption profile (area under the curve) in serum; magnesium tissue penetration and concentration, including brain tissue; behavioral indicators (e.g., anxiety-related behavior) recorded in the animals. | PMID 29679349 |
| 2018 | Placebo-controlled study at two clinics in 91 adults; 53 received MagSRT (500 mg dimagnesium malate plus vitamins B6, B12, and folate, dosed as 2 tablets containing 250 mg elemental magnesium) and the remainder received placebo. A subset of 24 MagSRT participants continued the trial to 90 days. Serum magnesium at 4 and 8 hours post-dose; red blood cell (RBC) magnesium at baseline, 30 days, and 90 days (subset); magnesium status questionnaire score at baseline, 30 days, and 90 days. | PMID 29425476 |
Source · PubMed checked study registry · Registry checked 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
Which labels file malate, and how much do they declare per serving?
20 labels name malate; 17 have a computable elemental amount per serving, with median 425 mg, against the full list linked below. The first eight are shown here. Values are filed elemental magnesium, not an assay of the contents, in the NIH DSLD snapshot 2026-08-10.
measured
Chart data
| Displayed chart text |
|---|
| P10 115 mg |
| P50 425 mg |
| P90 428 mg |
| Label | Declared elemental per serving | NIH DSLD |
|---|---|---|
| AN Amazing Nutrition Amazing Formulas Magnesium Malate 1250 mg | 425 mg | 251818 |
| BIOVEA Magnesium Malate 1250 mg | 425 mg | 45644 |
| BIOVEA Magnesium Malate 425 mg | 425 mg | 249077 |
| BIOVEA Magnesium Malate 625 mg | 433 mg | 34372 |
| Bluebonnet Magnesium Malate 425 mg | 425 mg | 332604 |
| BulkSupplements.com Magnesium Malate Capsules 400 mg | 400 mg | 329887 |
| Double Wood Supplements Magnesium Malate 1500 mg | Not determined | 241839 |
| Double Wood Supplements Magnesium Malate 1500 mg | Not determined | 315680 |
Source · NIH DSLD on-market labels · Labels naming this salt; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
Where do these numbers come from, and how do I cite or correct them?
The 20 recognized malate labels come from the NIH DSLD snapshot 2026-08-10. Chemistry was calculated from molecular formulas on 2026-10-17; observed retail prices are checked 2026-11-02. The linked CSV carries only values displayed on this page. Cite the release and report a claim if a filed label or calculation needs correction.
computed| Layer | Source and date |
|---|---|
| Labels | NIH DSLD snapshot 2026-08-10 |
| Chemistry | Formula calculation 2026-10-17 |
| Retail | Prices observed 2026-10-26 to 2026-11-02 |
Source · NIH DSLD; chemical formulas; Amazon via licensed data provider · Release 2026-08-10-f441aa9f · release 2026-08-10-f441aa9f · CSV · method