Label arithmetic · NIH DSLD 308655
Swanson Magnesium Watermelon: 1–4 gummies a day (salt not resolved)
120 servings filed for this label. Salt not resolved from the NIH record; no US price matched (Nov 2). Inside: label lines, ingredients.
Swanson Magnesium Watermelon declares magnesium without one determinable amount per 1–4 gummy(ies); the magnesium salt is not resolved from the filed record, Single-salt capacity audit excluded as of 2026-10-17: one salt with a defined elemental fraction is not resolved., as of 2026-11-02. No US retail price matched as of 2026-11-02. NIH DSLD 308655, label dated 2024-03-22.
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: 20% vs n/a%
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 magnesium compound is in one serving?
The compound mass behind this label cannot be computed as of 2026-11-02: Single-salt capacity audit excluded as of 2026-10-17: one salt with a defined elemental fraction is not resolved.. The filed amounts are listed in the next block.
computed with assumption| Measure | Value |
|---|---|
| Elemental magnesium per serving | Not one amount as of 2026-11-02 |
| Units per serving | 1–4 |
| Magnesium salt per serving | Not computable as of 2026-11-02 |
| Magnesium salt per serving | 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 308655 · label 2024-03-22; 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 Magnesium Watermelon files 2 magnesium lines in NIH DSLD 308655; 2 primary lines give no single elemental amount, 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 |
|---|---|---|
| 84 mg | Salt not named in this row as of 2026-11-02 | Primary serving |
| 336 mg | Salt not named in this row as of 2026-11-02 | Primary serving |
Source · NIH DSLD 308655 · label 2024-03-22; 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?
No single magnesium salt is resolved from the filed record as of 2026-11-02, so the source of the declared magnesium cannot be checked against capsule capacity, compared with oxide, the salt richest in magnesium at 60.3%.
computed with assumption| Form named on the label | Elemental fraction | Source |
|---|---|---|
| No form named as of 2026-11-02 | No defined fraction | named on label |
Source · NIH DSLD 308655 · label 2024-03-22; 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?
At the label's own serving, Swanson Magnesium Watermelon lasts 120 days: 120 servings against 1 serving a day in the filed directions.
computed| Measure | Value |
|---|---|
| Net contents as filed | 120 Gummy(ies) |
| Serving size as filed | 1–4 Gummy(ies) |
| Servings per container | 120 |
| Servings per day in the directions | 1 |
| Days per bottle | 120 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 308655 · label 2024-03-22; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
What does "20% Daily Value" mean here, and does it recompute?
The label declares 20% Daily Value for "Adults and children 4 or more years of age", a group whose reference is not resolved as of 2026-11-02.
computed| Group as filed | Declared | Reference | Recomputed |
|---|---|---|---|
| Adults and children 4 or more years of age | 20% | 420 mg | Not computable |
| Adults and children 4 or more years of age | 80% | 420 mg | Not computable |
Source · NIH DSLD 308655; 21 CFR 101.9 · label 2024-03-22 · 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?
Swanson Magnesium Watermelon files 9 other ingredients.
measured| Entry | Filed ingredient or declaration |
|---|---|
| 1 | Tapioca Syrup |
| 2 | Cane Sugar |
| 3 | Water |
| 4 | Inulin |
| 5 | Glycerin |
| 6 | Agar |
| 7 | Citric Acid |
| 8 | Watermelon Flavor, Natural |
7 additional rows
| Entry | Filed ingredient or declaration |
|---|---|
| 9 | Black Carrot Extract |
| Target group | Children 4 or More Years of Age |
| Target group | Vegan |
| Target group | Vegetarian |
| Target group | Adult (18 - 50 Years) |
| Target group | Gluten Free |
| Target group | Dairy Free |
Source · NIH DSLD 308655 · label 2024-03-22; 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 308655 · label 2024-03-22; 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 308655 · label 2024-03-22; 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 308655 (label 2024-03-22, snapshot 2026-08-10) and the chemistry model of 2026-09-13. 3 gaps remain: Single-salt capacity audit excluded as of 2026-10-17: one salt with a defined elemental fraction is not resolved.; No US retail price matched as of 2026-11-02 (barcode 0 87614 11844 4); A single salt with a defined elemental fraction is unresolved as of 2026-11-02. The CSV carries the values shown here.
measured| Field | As filed |
|---|---|
| NIH DSLD label | NIH DSLD 308655 |
| Scanned label (PDF) | Label 308655 scan |
| Label date | 2024-03-22 |
| Date entered into DSLD | 2024-03-22 |
| Barcode (UPC) as filed | 0 87614 11844 4 |
| Distributed by | Swanson Health Products, Fargo, ND, USA |
| Claim category as filed | All Other |
| Claim category as filed | Structure/Function |
14 additional rows
| Field | As filed |
|---|---|
| Formulation re: Other | Supports health stress response Essential for heart, bone and muscle health Promotes relaxation of mind and body |
| Suggested/Recommended/Usage/Directions | Suggested use: As a dietary supplement, for children ages 4-12, chew one gummy per day. For ages 12 and older, chew one gummy up to four times daily. |
| Formulation re: Other | Gummies may stick together, but this does not affect the potency, quality or efficacy of the product. |
| Precautions re: Children | Warning: Children 4 years old and older do not take more than one gummy per day. Keep out of reach of children. |
| Precautions re: Pregnant or Nursing or Prescription Medications | Consult your healthcare provider before using this or any product if you are pregnant or nursing, taking medication or have a medical condition. |
| Precautions re: All Other | Do not use if seal is broken. |
| 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. |
| Formulation re: Other | Stress, muscle and bone support |
| Formulation re: Vegetarian/Vegan | Vegan |
| Formulation re: Does NOT Contain | Gluten-free Non-GMO |
| FDA Statement of Identity | Dietary Supplement |
| Seals/Symbols | Vegetarian |
| Physical state | Gummy or Jelly |
| Registry snapshot | 2026-08-10 |
Source · NIH DSLD 308655 · label 2024-03-22; 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.