Label arithmetic · NIH DSLD 275916
Higher Nature Super Magnesium 300 mg: 300 mg of magnesium per capsule, 1 capsule a day (salt not resolved)
300 mg of magnesium per capsule, 1 a day. Salt not resolved from the NIH record; no US price matched (Nov 2). Inside: label lines, ingredients.
Higher Nature Super Magnesium 300 mg declares 300 mg of elemental magnesium per 1 capsule(s); 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 275916, label dated 2022-11-22.
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: 80% vs 71%
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 300 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: one salt with a defined elemental fraction is not resolved.. The filed amounts are listed in the next block. Lower bound, not a measurement: even if all 300 mg of magnesium per serving came from magnesium oxide (60.3% magnesium), the richest magnesium salt used in supplements, because "marine magnesium" on the label does not pin down the form, the single capsule would need at least 497 mg of compound, so at this bound it needs at least a size 0 capsule (about 545 mg at 0.8 g/mL); the actual mix of forms may need more.
computed with assumption| Measure | Value |
|---|---|
| Elemental magnesium per serving | 300 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 275916 · label 2022-11-22; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
How much elemental magnesium is actually in this label's filed magnesium lines?
Higher Nature Super Magnesium 300 mg files 1 magnesium line in NIH DSLD 275916; the selected primary line declares 300 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 |
|---|---|---|
| 300 mg | Salt not named in this row as of 2026-11-02 | Primary serving |
Source · NIH DSLD 275916 · label 2022-11-22; 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 275916 · label 2022-11-22; 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, Higher Nature Super Magnesium 300 mg lasts 90 days: 90 servings against 1 serving a day in the filed directions.
computed| Measure | Value |
|---|---|
| Net contents as filed | 90 Capsule(s) |
| Serving size as filed | 1 Capsule(s) |
| Servings per container | 90 |
| Servings per day in the directions | 1 |
| Days per bottle | 90 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 275916 · label 2022-11-22; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
What does "80% Daily Value" mean here, and does it recompute?
The label declares 80% Daily Value; 300 mg against the 420 mg reference in 21 CFR 101.9 recomputes to 71%, a difference of 9 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 |
| 71 · 80 |
| Declared vs |
| recomputed % DV |
| Group as filed | Declared | Reference | Recomputed |
|---|---|---|---|
| Adults and children 4 or more years of age | 80% | 420 mg | 71% |
Source · NIH DSLD 275916; 21 CFR 101.9 · label 2022-11-22 · release 2026-08-10-f441aa9f · CSV · method
Why does this label contain magnesium stearate, what shell is it, and who is it filed for?
Higher Nature Super Magnesium 300 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 vegetarian shell.
measured| Entry | Filed ingredient or declaration |
|---|---|
| 1 | Magnesium Hydroxide |
| 2 | Hydroxypropyl Methylcellulose |
| 3 | Magnesium Stearate |
| Shell | vegetarian |
| Target group | Children 4 or More Years of Age |
| Target group | Vegan |
| Target group | Vegetarian |
| Target group | Adult (18 - 50 Years) |
3 additional rows
| Entry | Filed ingredient or declaration |
|---|---|
| Target group | Gluten Free |
| Target group | Dairy Free |
| Target group | Sugar Free |
Source · NIH DSLD 275916 · label 2022-11-22; 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?
Higher Nature has 1 FDA recall record matched by brand name in the enforcement data queried 2026-10-19. Higher Nature has no FDA CAERS adverse event report on record at brand level as of 2026-10-19 (143 of 273 brands in this registry have at least one CAERS report).
measured| Recall | Date | Reason | Status |
|---|---|---|---|
| F-0743-2014 | 2013-12-25 | Firm is recalling dietary supplements containing a raw material which may contain >0.3 ppb chloramphenicol | 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 275916 · label 2022-11-22; 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 275916 · label 2022-11-22; 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 275916 (label 2022-11-22, 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 5 031013 108877); 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 275916 |
| Scanned label (PDF) | Label 275916 scan |
| Label date | 2022-11-22 |
| Date entered into DSLD | 2022-11-22 |
| Barcode (UPC) as filed | 5 031013 108877 |
| Label version · Image difference, same product | NIH DSLD 246063 |
| Label version · Package size difference, same product | NIH DSLD 246061 |
| Manufacturer | Higher Nature Ltd, Horam TN21 0GE, East Sussex, UK |
19 additional rows
| Field | As filed |
|---|---|
| Other | Higher Nature Ltd (EU), Dublin, Ireland |
| Claim category as filed | Nutrient |
| Claim category as filed | All Other |
| Claim category as filed | Structure/Function |
| General Statements: All Other Content | NRV = Nutrient Reference Value |
| Formulation re: Does NOT Contain | Free from: Artificial colours, flavourings or preservatives, dairy products, gluten, lactose, salt, soya, sugar, wheat, yeast. |
| Storage | Storage: Store in a cool, dry place out of reach of children. |
| General Statements: All Other Content | This product has not been tested on animals. |
| General Statements: All Other Content | Everyday Essentials |
| Formula re: Contains | Super Magnesium 300 mg natural source |
| Formulation re: Other | Advanced formula Optimal benefit |
| Formulation re: Vegetarian/Vegan | Vegetarian and vegan |
| FDA Statement of Identity | Food Supplement |
| Formula re: Contains | Marine source – natural magnesium and easily absorbed |
| Formulation re: Other | High strength yet gentle on the gut Vital for muscle function, energy release and reducing tiredness Also needed for bones and teeth, the nervous system and psychological function |
| Suggested/Recommended/Usage/Directions | Directions: Adults and children 13 and over take 1 capsule a day with meals. |
| Precautions re: All Other | Do not exceed recommended daily intake. Food supplements should not be used as a substitute for a varied and balanced diet and healthy lifestyle. |
| Physical state | Capsule |
| Registry snapshot | 2026-08-10 |
Source · NIH DSLD 275916 · label 2022-11-22; 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.