Label arithmetic · NIH DSLD 36425
Thompson Magnesium Malate 400 mg: 200 mg of magnesium per tablet, 2 tablets a day
200 mg of magnesium per tablet; the label's 2 tablets a day give 400 mg. No US price matched (Nov 2). Inside: salt weight, %DV check.
Thompson Magnesium Malate 400 mg declares 400 mg of elemental magnesium per serving as malate, which means 2,574–3,167 mg of magnesium malate pressed into 2 tablets, compared with 1,100 mg in the largest standard capsule; capsule verdicts do not apply to a tablet. No US retail price matched as of 2026-11-02; 2 of the 20 malate labels in this registry have a matched price. NIH DSLD 36425, label dated 2014-08-26.
computed from the filed label
Chart data
| Displayed chart text |
|---|
| gluconate |
| 6,826 |
| orotate |
| 5,502 |
| L-threonate |
| 4,848 |
| taurate |
| 4,484 |
| lactate |
| 3,331 |
| glycerophosphate |
| 3,200 |
| glycinate |
| 2,837 |
| malate |
| 2,574 |
| aspartate |
| 2,558 |
| citrate |
| 2,475 |
| sulfate |
| 1,981 |
| chloride |
| 1,567 |
| carbonate |
| 1,387 |
| hydroxide |
| 960 |
| oxide |
| 663 |
Data release 2026-08-10-f441aa9f · registry snapshot 2026-08-10 · latest price observation 2026-10-19 · chemistry 2026-10-17
Mass: 1,287–1,584 mg per tablet · Price: none matched · % DV: 100% vs 95%
Elemental: The magnesium itself; the rest of the compound weight is the partner molecule.
Compound: The whole salt, such as magnesium glycinate, that must physically fit in the capsule.
Size 000: The largest standard capsule, about 1,100 mg of powder at 0.8 g/mL, the top of the usual 0.6–0.8 range; size 00 holds about 730 mg and size 0 about 545 mg.
Recompute with your price
Enter the price you paid; the declared amount and servings of this label are prefilled, so the result is the cost per 100 mg of elemental magnesium for your bottle.
Same-salt comparison appears here.
How much malate is pressed into one tablet?
Thompson Magnesium Malate 400 mg carries 2,574–3,167 mg of magnesium malate per serving for 400 mg of elemental magnesium, against 1,100 mg in the largest standard capsule; capsule capacities do not apply to this tablet or pill.
computed with assumption| Measure | Value |
|---|---|
| Elemental magnesium per serving | 400 mg |
| Units per serving | 2 |
| Magnesium malate per serving | 2,574–3,167 mg |
| Magnesium malate per tablet | 1,287–1,584 mg |
| Capsule capacity 0 · 00 · 000 | 545 · 730 · 1,100 mg |
| Verdict | Capsule sizes do not apply |
The filed salt can have more than one hydration state (anhydrous 15.54% or dihydrate 12.63% (192.41 g/mol)), so the compound mass is a range.
Source · NIH DSLD 36425 · label 2014-08-26; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
How much elemental magnesium is actually in this label's filed magnesium lines?
Thompson Magnesium Malate 400 mg files 1 magnesium line in NIH DSLD 36425; the selected primary line declares 400 mg of elemental magnesium per serving, against 0 other rows excluded from the primary amount. A salt named under another nutrient does not turn that nutrient's quantity into elemental magnesium.
measured| Filed amount | Salt or note as filed | Role |
|---|---|---|
| 400 mg | malate · Magnesium (Form: as Magnesium Malate) | Primary serving |
Source · NIH DSLD 36425 · label 2014-08-26; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
Does this label's malate claim hold up, or could the magnesium come from another source?
The label names one magnesium form, malate, resolved from the filed magnesium line; capsule capacities do not apply to this form, compared with oxide, the salt richest in magnesium at 60.3%.
computed with assumption| Form named on the label | Elemental fraction | Source |
|---|---|---|
| Magnesium malate | 12.6–15.5% | filed magnesium line |
Source · NIH DSLD 36425 · label 2014-08-26; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
Is this a good price for the elemental magnesium I'm actually getting?
No US retail price is matched to this label as of 2026-11-02; 2 of 20 malate labels have one, against a median of $0.1052 per 100 mg among 4 ranked malate offers.
computed
Chart data
| Displayed chart text |
|---|
| n=4, band unstable |
| P25 $0.0739 |
| P75 $0.1402 |
| median $0.1052 |
| Rank | Label | Per 100 mg | Observed |
|---|---|---|---|
| 1 | Seeking Health Magnesium Malate 500 mg | $0.0460 | 2026-11-02 |
| 2 | BulkSupplements.com Magnesium Malate Capsules 400 mg | $0.0832 | 2026-11-02 |
| 3 | Trace Minerals Research Stress-X Magnesium Powder Lemon Lime | $0.1272 | 2026-11-02 |
| 4 | Thorne Calcium-Magnesium Malate | $0.1792 | 2026-11-02 |
| Median | 4 ranked malate offers | $0.1052 | 2026-11-02 |
Source · Amazon via licensed data provider; NIH DSLD · unique ASIN × date; prices observed 2026-10-26 to 2026-11-02 · release 2026-08-10-f441aa9f · CSV · method
How many days will this bottle last at the label's own serving, and what does a day cost?
At the label's own serving, Thompson Magnesium Malate 400 mg lasts 60 days: 60 servings against 1 serving a day in the filed directions.
computed| Measure | Value |
|---|---|
| Net contents as filed | 120 Tablet(s) |
| Serving size as filed | 2 Tablet(s) |
| Servings per container | 60 |
| Servings per day in the directions | 1 |
| Days per bottle | 60 days |
| $ per 30 days at one label serving a day | No ranked price as of 2026-11-02 |
| $ per 30 days at 420 mg Daily Value | No ranked price as of 2026-11-02 |
Source · NIH DSLD 36425 · label 2014-08-26; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
What does "100% Daily Value" mean here, and does it recompute?
The label declares 100% Daily Value; 400 mg against the 420 mg reference in 21 CFR 101.9 recomputes to 95%, a difference of 5 points. Labels filed under the earlier 400 mg reference, or with a different filing basis, show gaps of this kind.
computed
Chart data
| Displayed chart text |
|---|
| Declared vs recomputed % |
| DV |
| 95 · 100 |
| Declared vs |
| recomputed % DV |
| Group as filed | Declared | Reference | Recomputed |
|---|---|---|---|
| Adults and children 4 or more years of age | 100% | 420 mg | 95% |
Source · NIH DSLD 36425; 21 CFR 101.9 · label 2014-08-26 · release 2026-08-10-f441aa9f · CSV · method
Why does this label contain these other ingredients, what shell is it, and who is it filed for?
Thompson Magnesium Malate 400 mg files 3 other ingredients and a vegetarian shell, and no magnesium stearate, against 12 of 20 malate labels that list magnesium stearate.
measured| Entry | Filed ingredient or declaration |
|---|---|
| 1 | Cellulose |
| 2 | Stearic Acid |
| 3 | Silica |
| Shell | vegetarian |
| Target group | Adult (18 - 50 Years) |
Source · NIH DSLD 36425 · label 2014-08-26; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
What has research measured about malate, and about side effects?
3 studies in the PubMed-checked registry measured outcomes involving malate; none reports a gastrointestinal outcome as of 2026-11-02. They measured the salt, not this label.
measured| Year | Study | PubMed |
|---|---|---|
| 2020 | Dose-Dependent Absorption Profile of Different Magnesium Compounds | 30761462 |
| 2019 | Timeline (Bioavailability) of Magnesium Compounds in Hours: Which Magnesium Compound Works Best? | 29679349 |
| 2018 | Scottsdale Magnesium Study: Absorption, Cellular Uptake, and Clinical Effectiveness of a Timed-Release Magnesium Supplement in a Standard Adult Clinical Population. | 29425476 |
Source · PubMed-checked study registry · registry checked 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
Has this brand had FDA recalls or adverse event reports?
Thompson has 6 FDA recall records matched by brand name in the enforcement data queried 2026-10-19. Thompson has FDA CAERS adverse event reports on record at brand level, as do 143 of 273 brands in this registry; openFDA states that “there is no certainty that the reported event (adverse event) was actually due to the product” and that reports “cannot be used to estimate the incidence of these events.”
measured| Recall | Date | Reason | Status |
|---|---|---|---|
| F-0814-2018 | 2018-02-14 | The seasoning mix Nutrition label states that the sodium content is 0 mg, when it actually contains 350 mg of salt per serving. | Terminated |
| F-0667-2021 | 2021-06-23 | Potential Salmonella contamination | Terminated |
| F-0459-2025 | 2025-02-12 | Barbeque sauce product contains undeclared allergen listing of (Milk) in product ingredient listing from sub-ingredient Butter. | Terminated |
| F-0460-2025 | 2025-02-12 | Barbeque sauce product contains undeclared listing of (Milk) in product ingredient listing from sub-ingredient Butter. | Terminated |
| F-0458-2025 | 2025-02-12 | Barbeque sauce product contains undeclared allergens (soy) contained in sub-ingredient | Terminated |
Source · openFDA enforcement and CAERS · queried 2026-10-19 · release 2026-08-10-f441aa9f · CSV · method
Is this the same formula as another brand's, and how do their prices differ?
No other brand files the same formulation (ingredients, shell, units and rounded amount) as of 2026-11-02.
computed| Label | Brand | Price per 100 mg |
|---|---|---|
| No cross-brand match as of 2026-11-02 |
Source · NIH DSLD 36425 · label 2014-08-26; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
Which labels are closest to this one, with the same salt and dose?
1 label use the same resolved malate within ±10% of this label's 200 mg per unit, compared side by side on price and capsule verdict.
computed| Label | Elemental per unit | Price | Verdict |
|---|---|---|---|
| KAL Magnesium Malate 400 | 200 mg | No price | Capsule sizes do not apply |
Source · NIH DSLD 36425 · label 2014-08-26; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
Where does this record come from, what is missing, and how do I cite or correct it?
Every value on this page traces to NIH DSLD 36425 (label 2014-08-26, snapshot 2026-08-10) and the chemistry model of 2026-09-13. 1 gap remain: No US retail price matched as of 2026-11-02 (barcode 0 31315 19159 6). The CSV carries the values shown here.
measured| Field | As filed |
|---|---|
| NIH DSLD label | NIH DSLD 36425 |
| Label date | 2014-08-26 |
| Date entered into DSLD | 2014-08-26 |
| Barcode (UPC) as filed | 0 31315 19159 6 |
| Mfd. by | NutraPure, Inc. |
| Comments or Questions | Thompson, Phoenix, AZ, USA |
| Claim category as filed | All Other |
| General Statements: All Other Content | TWICE DAILY |
13 additional rows
| Field | As filed |
|---|---|
| General Statements: All Other Content | SINCE 1932 |
| General Statements: All Other Content | FRESH HEALTHY |
| FDA Statement of Identity | DIETARY SUPPLEMENT |
| Precautions re: All Other | WARNING: Do not use if safety seal is broken or missing. |
| Precautions re: Children | Keep out of reach of children. |
| General Statements: All Other Content | Keep your licensed health care practitioner informed when using this product. |
| Suggested/Recommended/Usage/Directions | Directions: Use only as directed. Take two tablets daily with a meal or glass of water. |
| General Statements: All Other Content | Discussion: Magnesium is an essential mineral that provides nutritive support for normal, healthy muscle function. Malate is a key nutrient in the krebs (energy) cycle. This vegetarian formula is designed to disintegrate within 30 minutes. |
| Brand IP Statement(s) re: (c), (TM), (SM) | Our own laboratory analysis guarantees purity and freshness of all Thompson(R) products. |
| Brand IP Statement(s) re: (c), (TM), (SM) | (C)2008 |
| General: Product/Version Code | 3423610 1107 |
| Physical state | Tablet or Pill |
| Registry snapshot | 2026-08-10 |
Source · NIH DSLD 36425 · label 2014-08-26; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
6 brand pages linked below contain magnesium labels from the NIH DSLD registry snapshot dated 2026-08-10.