Label arithmetic · NIH DSLD 333521
Windmill Magnesium Citrus Flavor: 325 mg of magnesium per 4 gram, 40 servings
325 mg of magnesium in each 4 gram, about 40 servings per 5.64 Fluid Ounce. Salt not resolved from the NIH record. Inside: label lines, ingredients.
Windmill Magnesium Citrus Flavor declares 325 mg of elemental magnesium per 4 gram(s) (1 scoop); 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 333521, label dated 2025-07-24.
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: 77% vs 77%
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 | 325 mg |
| Units per serving | Not a discrete unit as of 2026-11-02 |
| 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 333521 · label 2025-07-24; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
How much elemental magnesium is actually in this label's filed magnesium lines?
Windmill Magnesium Citrus Flavor files 1 magnesium line in NIH DSLD 333521; the selected primary line declares 325 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 |
|---|---|---|
| 325 mg | Salt not named in this row as of 2026-11-02 | Primary serving |
Source · NIH DSLD 333521 · label 2025-07-24; 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 333521 · label 2025-07-24; 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, Windmill Magnesium Citrus Flavor lasts 40 days: 40 servings against 1 serving a day in the filed directions.
computed| Measure | Value |
|---|---|
| Net contents as filed | 5.64 Fluid Ounce(s); 160 Gram(s) |
| Serving size as filed | 4 Gram(s) (1 scoop) |
| Servings per container | 40 |
| Servings per day in the directions | 1 |
| Days per bottle | 40 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 333521 · label 2025-07-24; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
What does "77% Daily Value" mean here, and does it recompute?
The label declares 77% Daily Value; 325 mg against the 420 mg reference in 21 CFR 101.9 recomputes to 77%, the same within one point.
computed| Group as filed | Declared | Reference | Recomputed |
|---|---|---|---|
| Adults and children 4 or more years of age | 77% | 420 mg | 77% |
Source · NIH DSLD 333521; 21 CFR 101.9 · label 2025-07-24 · 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?
Windmill Magnesium Citrus Flavor files 6 other ingredients.
measured| Entry | Filed ingredient or declaration |
|---|---|
| 1 | Maltodextrin |
| 2 | Citric Acid |
| 3 | Natural Flavors |
| 4 | Silica |
| 5 | Beta-Carotene |
| 6 | Steviol Glycosides |
| Target group | Vegan |
| Target group | Vegetarian |
4 additional rows
| Entry | Filed ingredient or declaration |
|---|---|
| Target group | Adult (18 - 50 Years) |
| Target group | Gluten Free |
| Target group | Dairy Free |
| Target group | Sugar Free |
Source · NIH DSLD 333521 · label 2025-07-24; 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?
Windmill has 1 FDA recall record matched by brand name in the enforcement data queried 2026-10-19. Windmill 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-0385-2021 | 2021-04-14 | Vitamin D3 stability sample analyzed and found to be less than 100% of label claim. | 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 333521 · label 2025-07-24; 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 333521 · label 2025-07-24; 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 333521 (label 2025-07-24, 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 35046 00326 5); 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 333521 |
| Scanned label (PDF) | Label 333521 scan |
| Label date | 2025-07-24 |
| Date entered into DSLD | 2025-07-24 |
| Barcode (UPC) as filed | 0 35046 00326 5 |
| Distributed by | Windmill Health Products, West Caldwell, NJ |
| Claim category as filed | All Other |
| Claim category as filed | Structure/Function |
15 additional rows
| Field | As filed |
|---|---|
| Suggested/Recommended/Usage/Directions | Directions: Mix 1 scoop with 8 ounces of cold water once daily or as directed by a healthcare professional. |
| Precautions re: Children | Keep out of reach of children. |
| Storage | Protect from heat, light & moisture. Store in a cool, dry place. |
| Precautions re: All Other | Do not purchase if seal is broken. |
| Seals/Symbols | Made in the U.S.A. from globally sourced ingredients |
| 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 | Windmill Family owned since 1972 |
| Formulation re: Other | Relaxation Support Drink Mix |
| Formulation re: Other | Supports relaxation Gut heatlh |
| FDA Statement of Identity | Dietary Supplement |
| Formulation re: Does NOT Contain | No sugar, wheat, soy, milk, artificial colors, flavors or preservatives Non GMO - Gluten free - Vegan |
| Formulation re: Vegetarian/Vegan | Non GMO - Gluten free - Vegan |
| General Statements: All Other Content | Please recycle |
| Physical state | Liquid |
| Registry snapshot | 2026-08-10 |
Source · NIH DSLD 333521 · label 2025-07-24; 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.