Label arithmetic · NIH DSLD 202691
Swanson Triple Magnesium Complex 400 mg: 400 mg of magnesium per capsule, 1 capsule a day – aspartate + citrate + oxide
400 mg of magnesium per capsule, 1 a day. From aspartate + citrate + oxide; no US price matched (Nov 2). Inside: label lines, ingredients.
Swanson Triple Magnesium Complex 400 mg declares 400 mg of elemental magnesium per 1 capsule(s); the magnesium salt is not resolved from the filed record, servings per container are not filed, Single-salt capacity audit excluded as of 2026-10-17: buffered, complex, blend or asporotate wording leaves the composition unresolved., as of 2026-11-02. No US retail price matched as of 2026-11-02. NIH DSLD 202691, label dated 2019-05-28.
as filedData release 2026-08-10-f441aa9f · registry snapshot 2026-08-10 · latest price observation 2026-10-19 · chemistry 2026-10-17
Mass: not computable · Price: none matched · % DV: 95% 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.
Will 400 mg of magnesium actually fit in one capsule, or do I need more than one?
The compound mass behind this label cannot be computed as of 2026-11-02: Single-salt capacity audit excluded as of 2026-10-17: buffered, complex, blend or asporotate wording leaves the composition unresolved.. The filed amounts are listed in the next block. Lower bound, not a measurement: even if all 400 mg of magnesium per serving came from magnesium oxide (60.3% magnesium), the richest magnesium salt used in supplements, because the complex or buffer does not specify every carrier, the single capsule would need at least 663 mg of compound, so at this bound it needs at least a size 00 capsule (about 730 mg at 0.8 g/mL); the actual form, which the label does not name, may need more.
computed with assumption| Measure | Value |
|---|---|
| Elemental magnesium per serving | 400 mg |
| Units per serving | 1 |
| Magnesium salt per serving | Not computable as of 2026-11-02 |
| Magnesium salt per capsule | Not computable as of 2026-11-02 |
| Capsule capacity 0 · 00 · 000 | 545 · 730 · 1,100 mg |
| Verdict | Not computable as of 2026-11-02 |
Source · NIH DSLD 202691 · label 2019-05-28; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
How much elemental magnesium is actually in this label's filed magnesium lines?
Swanson Triple Magnesium Complex 400 mg files 1 magnesium line in NIH DSLD 202691; 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 | aspartate, citrate, oxide · Magnesium (Form: from Magnesium Oxide, Magnesium Citrate, Magnesium Aspartate) | Primary serving |
Source · NIH DSLD 202691 · label 2019-05-28; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
Does this label's magnesium claim hold up, or could the magnesium come from another source?
The label names 3 magnesium forms (aspartate, citrate, oxide); a named blend does not establish how much magnesium each form contributes, so the resolved reading is the most favourable one, compared with oxide, the salt richest in magnesium at 60.3%.
computed with assumption| Form named on the label | Elemental fraction | Source |
|---|---|---|
| Magnesium aspartate | 7.5–15.6% | named on label |
| Magnesium citrate | 11.3–16.2% | named on label |
| Magnesium oxide | 60.3% | named on label |
Source · NIH DSLD 202691 · label 2019-05-28; 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, and without a resolved salt there is no same-salt comparison.
computed| Rank | Label | Per 100 mg | Observed |
|---|
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?
Days per bottle cannot be computed for Swanson Triple Magnesium Complex 400 mg as of 2026-11-02: servings per container are not filed.
computed| Measure | Value |
|---|---|
| Net contents as filed | 100 Capsule(s) |
| Serving size as filed | 1 Capsule(s) |
| Servings per container | Not filed as of 2026-11-02 |
| Servings per day in the directions | 1 |
| Days per bottle | Not computable as of 2026-11-02 |
| $ 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 202691 · label 2019-05-28; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
What does "95% Daily Value" mean here, and does it recompute?
The label declares 95% Daily Value; 400 mg against the 420 mg reference in 21 CFR 101.9 recomputes to 95%, the same within one point.
computed| Group as filed | Declared | Reference | Recomputed |
|---|---|---|---|
| Adults and children 4 or more years of age | 95% | 420 mg | 95% |
Source · NIH DSLD 202691; 21 CFR 101.9 · label 2019-05-28 · release 2026-08-10-f441aa9f · CSV · method
Why does this label contain magnesium stearate, what shell is it, and who is it filed for?
Swanson Triple Magnesium Complex 400 mg files 3 other ingredients, including magnesium stearate (reference fraction 4.1% magnesium; no quantity filed, so it is not added to the total) and a gelatin shell.
measured| Entry | Filed ingredient or declaration |
|---|---|
| 1 | Rice Flour |
| 2 | Gelatin |
| 3 | Magnesium Stearate |
| Shell | gelatin |
| Target group | Adult (18 - 50 Years) |
Source · NIH DSLD 202691 · label 2019-05-28; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
What has research measured about this form, and about side effects?
No study in the registry measured an unresolved salt as of 2026-11-02.
measured| Year | Study | PubMed |
|---|
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?
Swanson has 6 FDA recall records matched by brand name in the enforcement data queried 2026-10-19. Swanson 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-0705-2013 | 2012-11-28 | This is to inform you of a product recall involving 2 lots of Swanson Organic 100% Certified Organic Fennel Seed (SWF092). Some jars of fennel seeds have been found to contain small, red beetle-type insects. | Terminated |
| F-0220-2014 | 2013-11-27 | Swanson Health Products is recalling two lots of Swanson Premium Full Spectrum Black Cumin Seed (Nigella sativa) Dietary Supplement Capsules. The product was found to be mislabel. Bottles of Black Cumin Seed from these two lots numbers (199399 & 201359) have been found to contain White Cumin Seed (Cuminum cyminum). | Terminated |
| F-1936-2014 | 2014-05-21 | The contract manufacturer has notified Swanson Health Products that Swanson Full Spectrum Cilantro (Coriander) (SW1112) is subject to a recall due to a potential risk of salmonella contamination. | Terminated |
| F-2438-2014 | 2014-09-24 | Swanson Certified Organic Carob Powder, item number SWF115 is being recalled due to a potential risk of Salmonella contamination from a raw ingredient used in this product. | Terminated |
| F-1985-2018 | 2018-10-03 | Himalayan Crystal Salt may contain metal wire pieces. | 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 202691 · label 2019-05-28; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
Which labels are closest to this one, with the same salt and dose?
No other label files the same resolved salt within ±10% of this label's dose per unit as of 2026-11-02.
computed| Label | Elemental per unit | Price | Verdict |
|---|---|---|---|
| No neighbour as of 2026-11-02 |
Source · NIH DSLD 202691 · label 2019-05-28; 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 202691 (label 2019-05-28, snapshot 2026-08-10) and the chemistry model of 2026-09-13. 4 gaps remain: Single-salt capacity audit excluded as of 2026-10-17: buffered, complex, blend or asporotate wording leaves the composition unresolved.; No US retail price matched as of 2026-11-02 (barcode 0 87614 01808 9); A single salt with a defined elemental fraction is unresolved as of 2026-11-02; Servings per container are not filed as of 2026-11-02. The CSV carries the values shown here.
measured| Field | As filed |
|---|---|
| NIH DSLD label | NIH DSLD 202691 |
| Label date | 2019-05-28 |
| Date entered into DSLD | 2019-05-28 |
| Barcode (UPC) as filed | 0 87614 01808 9 |
| Label version · Image difference, same product | NIH DSLD 175970 |
| Label version · Image difference, same product | NIH DSLD 78663 |
| Label version · Package size difference, same product | NIH DSLD 174919 |
| Label version · Package size difference, same product | NIH DSLD 267013 |
30 additional rows
| Field | As filed |
|---|---|
| Label version · Package size difference, same product | NIH DSLD 202945 |
| Label version · Package size difference, same product | NIH DSLD 187552 |
| Label version · Package size difference, same product | NIH DSLD 175970 |
| Label version · Package size difference, same product | NIH DSLD 78663 |
| Label version · Package size difference, same product | NIH DSLD 337705 |
| Label version · Image difference, same product | NIH DSLD 12092 |
| Label version · Package size difference, same product | NIH DSLD 158781 |
| Label version · Package size difference, same product | NIH DSLD 12092 |
| Label version · Package size difference, same product | NIH DSLD 308791 |
| Label version · Package size difference, same product | NIH DSLD 177840 |
| Label version · Package size difference, same product | NIH DSLD 173083 |
| Distributed by | Swanson Health Products, Fargo, ND, USA |
| Claim category as filed | Nutrient |
| Claim category as filed | All Other |
| Claim category as filed | Structure/Function |
| General Statements: All Other Content | Supports nerve, muscle, bone and heart health |
| Formula re: Contains | Features 3 distinct sources of magnesium to promote optimum bioavailability |
| General Statements: All Other Content | Science-Backed Quality Since 1969 |
| Suggested/Recommended/Usage/Directions | Suggested use: As a dietary supplement, take one capsule per day with water. |
| Precautions re: All Other | Warning: For adults only. |
| Precautions re: Pregnant or Nursing or Prescription Medications | Consult your physician before using this or any product if you are pregnant or nursing, taking medication or if you have a medical condition. |
| Precautions re: Children | Keep out of reach of children. |
| Precautions re: All Other | Do not use if seal is broken. |
| Storage | Store in a cool, dry place. |
| FDA Disclaimer Statement | 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. |
| General Statements: All Other Content | Muscle and bone health 400 mg per capsule |
| FDA Statement of Identity | Mineral Supplement |
| General: Product/Version Code | SW808 Rev 4 10 11 18 |
| Physical state | Capsule |
| Registry snapshot | 2026-08-10 |
Source · NIH DSLD 202691 · label 2019-05-28; 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.