Label arithmetic · NIH DSLD 205525
PureFormulas D-Ribose Powder Malic Acid + Magnesium: 40 mg of magnesium per 6.2 gram, 56 servings
40 mg of magnesium in each 6.2 gram, about 56 servings per 12 oz. Salt not resolved from the NIH record. Inside: label lines, ingredients.
PureFormulas D-Ribose Powder Malic Acid + Magnesium declares 40 mg of elemental magnesium per 6.2 gram(s) (1 scoop or 2 teaspoons); 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 205525, label dated 2019-08-23.
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: 10% vs 10%
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 powder is in one scoop?
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 | 40 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 205525 · label 2019-08-23; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
How much elemental magnesium is actually in this label's filed magnesium lines?
PureFormulas D-Ribose Powder Malic Acid + Magnesium files 1 magnesium line in NIH DSLD 205525; the selected primary line declares 40 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 |
|---|---|---|
| 40 mg | citrate · Magnesium (Form: from Magnesium Citrate) | Primary serving |
Source · NIH DSLD 205525 · label 2019-08-23; 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 |
|---|---|---|
| Magnesium citrate | 11.3–16.2% | named on label |
Source · NIH DSLD 205525 · label 2019-08-23; 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, PureFormulas D-Ribose Powder Malic Acid + Magnesium lasts 56 days: 56 servings against 1 serving a day in the filed directions.
computed| Measure | Value |
|---|---|
| Net contents as filed | 12 oz.; 340 Gram(s) |
| Serving size as filed | 6.2 Gram(s) (1 scoop or 2 teaspoons) |
| Servings per container | 56 |
| Servings per day in the directions | 1 |
| Days per bottle | 56 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 205525 · label 2019-08-23; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
What does "10% Daily Value" mean here, and does it recompute?
The label declares 10% Daily Value; 40 mg against the 420 mg reference in 21 CFR 101.9 recomputes to 10%, the same within one point.
computed| Group as filed | Declared | Reference | Recomputed |
|---|---|---|---|
| Adults and children 4 or more years of age | 10% | 420 mg | 10% |
Source · NIH DSLD 205525; 21 CFR 101.9 · label 2019-08-23 · 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?
PureFormulas D-Ribose Powder Malic Acid + Magnesium files 1 other ingredient.
measured| Entry | Filed ingredient or declaration |
|---|---|
| 1 | None |
| Target group | Adult (18 - 50 Years) |
| Target group | Gluten Free |
Source · NIH DSLD 205525 · label 2019-08-23; 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?
PureFormulas has 0 FDA recall records matched by brand name in the enforcement data queried 2026-10-19. PureFormulas 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 |
|---|---|---|---|
| No recall record as of 2026-10-19 |
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 205525 · label 2019-08-23; 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 205525 · label 2019-08-23; 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 205525 (label 2019-08-23, 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 PUF1019); 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 205525 |
| Label date | 2019-08-23 |
| Date entered into DSLD | 2019-08-23 |
| Barcode (UPC) as filed | PUF1019 |
| Label version · Package size difference, same product | NIH DSLD 27025 |
| Label version · Image difference, same product | NIH DSLD 27023 |
| Manufactured for | PureFormulas, Miami, FL |
| Claim category as filed | Nutrient |
18 additional rows
| Field | As filed |
|---|---|
| Claim category as filed | All Other |
| Claim category as filed | Structure/Function |
| Suggested/Recommended/Usage/Directions | Suggested usage: Adults take 1 scoop (2 teaspoons) daily with a meal or as directed by your healthcare professional. Dissolve powder in water, juice or other beverage and consume. |
| Formulation re: Does NOT Contain | Gluent-free, Non-GMO |
| Precautions re: All Other | Caution: Insulin-dependent diabetics and pregnant women should consult their healthcare professional before use. |
| Precautions re: Pregnant or Nursing or Prescription Medications | Caution: Insulin-dependent diabetics and pregnant women should consult their healthcare professional before use. |
| Brand IP Statement(s) re: (c), (TM), (SM) | Protected by U.S. patents 6,159,942; 6,534,480; 6,218,366; 6,339,716; 6,703,370 and other U.S. and foreign patents issued and pending 2008 Bioenergy, Inc. |
| Precautions re: Children | Keep out of reach of children. |
| Storage | For optimal storage conditions, store in a cool, dry place. (59(0)-77(0)F/15(0)-25(0)C) (35-65% relative humidity) |
| Precautions re: All Other | Tamper resistant package, do not use if outer seal is missing. |
| General Statements: All Other Content | Packaged by weight, not volume. Settling may occur. |
| General Statements: All Other Content | Live life pure. |
| Formula re: Contains | Malic Acid + Magnesium |
| FDA Statement of Identity | Dietary Supplement |
| Precautions re: All Other | Not for parenteral use |
| Storage | Store at room temperature Avoid excess heat and moisture |
| Physical state | Powder |
| Registry snapshot | 2026-08-10 |
Source · NIH DSLD 205525 · label 2019-08-23; 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.