Label arithmetic · NIH DSLD 329720
BulkSupplements.com Magnesium Oxide Powder: 500 mg of magnesium per 835 mg, 599 servings
500 mg of magnesium in each 835 mg, about 599 servings per 500 Gram. Oxide is 60.3% magnesium. Inside: salt per scoop, %DV check.
BulkSupplements.com Magnesium Oxide Powder was observed at $17.97 on 2026-09-11; a cost per 100 mg of elemental magnesium is not computed for it because pack weight differs: the offer lists 250 g, the label 500 g. The observation stays visible and enters no ranking. NIH DSLD 329720, label dated 2025-05-21.
as filed
Chart data
| Displayed chart text |
|---|
| gluconate |
| 8,532 |
| orotate |
| 6,878 |
| L-threonate |
| 6,061 |
| taurate |
| 5,605 |
| lactate |
| 4,163 |
| glycerophosphate |
| 4,000 |
| glycinate |
| 3,546 |
| malate |
| 3,218 |
| aspartate |
| 3,197 |
| citrate |
| 3,094 |
| sulfate |
| 2,476 |
| chloride |
| 1,958 |
| carbonate |
| 1,734 |
| hydroxide |
| 1,200 |
| oxide |
| 829 |
Data release 2026-08-10-f441aa9f · registry snapshot 2026-08-10 · this offer's price observed 2026-09-11 · latest price observation 2026-11-02 · chemistry 2026-10-17
Mass: 829 mg per serving · Price: on review · % DV: 119% vs 119%
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 oxide powder is in one scoop?
BulkSupplements.com Magnesium Oxide Powder carries 829 mg of magnesium oxide per serving for 500 mg of elemental magnesium, against 1,100 mg in the largest standard capsule; capsule capacities do not apply to this powder.
computed with assumption| Measure | Value |
|---|---|
| Elemental magnesium per serving | 500 mg |
| Units per serving | Not a discrete unit as of 2026-11-02 |
| Magnesium oxide per serving | 829 mg |
| Magnesium oxide per serving | Not computable as of 2026-11-02 |
| Capsule capacity 0 · 00 · 000 | 545 · 730 · 1,100 mg |
| Verdict | Capsule sizes do not apply |
Source · NIH DSLD 329720 · label 2025-05-21; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
How much elemental magnesium is actually in this label's filed magnesium lines?
BulkSupplements.com Magnesium Oxide Powder files 1 magnesium line in NIH DSLD 329720; the selected primary line declares 500 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 |
|---|---|---|
| 500 mg | Salt not named in this row; magnesium oxide is taken from the label text | Primary serving |
Source · NIH DSLD 329720 · label 2025-05-21; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
Does this label's oxide claim hold up, or could the magnesium come from another source?
The label names one magnesium form, oxide, resolved from the full NIH DSLD record text; capsule capacities do not apply to this form, compared with oxide, the salt richest in magnesium at 60.3%.
computed with assumption| Form named on the label | Elemental fraction | Source |
|---|---|---|
| Magnesium oxide | 60.3% | full NIH DSLD record text |
Source · NIH DSLD 329720 · label 2025-05-21; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
Is this a good price for the elemental magnesium I'm actually getting?
BulkSupplements.com Magnesium Oxide Powder was observed at $17.97 on 2026-09-11, but no cost per 100 mg is computed because pack weight differs: the offer lists 250 g, the label 500 g; against 5 ranked oxide offers with a median of $0.0293.
computed
Chart data
| Displayed chart text |
|---|
| n=5 |
| P25 $0.0258 |
| P75 $0.0356 |
| median $0.0293 |
| Rank | Label | Per 100 mg | Observed |
|---|---|---|---|
| 1 | Nutricost Magnesium Oxide | $0.0148 | 2026-11-02 |
| 2 | tnvitamins Magnesium Oxide 420 mg | $0.0258 | 2026-11-02 |
| 3 | Douglas Laboratories Magnesium Oxide | $0.0293 | 2026-11-02 |
| 4 | Wonder Labs Magnesium Oxide 400 | $0.0356 | 2026-11-02 |
| 5 | Carlson Magnesium Gels 400 mg | $0.0636 | 2026-11-02 |
| On review | BulkSupplements.com Magnesium Oxide Powder (this label) | Not computed | 2026-09-11 |
| Median | 5 ranked oxide offers | $0.0293 | 2026-11-02 |
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, BulkSupplements.com Magnesium Oxide Powder lasts 599 days: 599 servings against 1 serving a day in the filed directions.
computed| Measure | Value |
|---|---|
| Net contents as filed | 500 Gram(s); 17.6 Ounce(s) |
| Serving size as filed | 835 mg (about 1/3 tsp) |
| Servings per container | 599 |
| Servings per day in the directions | 1 |
| Days per bottle | 599 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 329720 · label 2025-05-21; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
What does "119% Daily Value" mean here, and does it recompute?
The label declares 119% Daily Value; 500 mg against the 420 mg reference in 21 CFR 101.9 recomputes to 119%, the same within one point.
computed| Group as filed | Declared | Reference | Recomputed |
|---|---|---|---|
| Adults and children 4 or more years of age | 119% | 420 mg | 119% |
Source · NIH DSLD 329720; 21 CFR 101.9 · label 2025-05-21 · 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?
Other ingredients are not present in the filed record for BulkSupplements.com Magnesium Oxide Powder as of 2026-11-02.
measured| 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 329720 · label 2025-05-21; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
What has research measured about oxide, and about side effects?
12 studies in the PubMed-checked registry measured outcomes involving oxide; 2 mention gastrointestinal or adverse outcomes. They measured the salt, not this label.
measured| Year | Study | PubMed |
|---|---|---|
| 2026 | Randomized, open-label study of the short-term pharmacokinetics of oral magnesium oxide in healthy volunteers. | 42091979 |
| 2024 | Comparative Clinical Study on Magnesium Absorption and Side Effects After Oral Intake of Microencapsulated Magnesium (MAGSHAPE™ Microcapsules) Versus Other Magnesium Sources. | 39770988 |
| 2022 | Effects of short-term magnesium supplementation on ionized, total magnesium and other relevant electrolytes levels. | 35041150 |
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?
BulkSupplements.com has 2 FDA recall records matched by brand name in the enforcement data queried 2026-10-19. BulkSupplements.com 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-1827-2018 | 2018-08-22 | FDA inspection found two lots of supplements that did not declare shellfish as an ingredient on the product label; shellfish is properly declared on website. | Terminated |
| H-0619-2025 | 2025-09-24 | Finished product possibly contaminated with pathogenic Staphylococcus aureus. | 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 329720 · label 2025-05-21; 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 329720 · label 2025-05-21; 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 329720 (label 2025-05-21, snapshot 2026-08-10), a price observed 2026-09-11 and the chemistry model of 2026-09-13. 1 gap remain: Other ingredients are not present in the filed record as of 2026-11-02. The CSV carries the values shown here.
measured| Field | As filed |
|---|---|
| NIH DSLD label | NIH DSLD 329720 |
| Scanned label (PDF) | Label 329720 scan |
| Label date | 2025-05-21 |
| Date entered into DSLD | 2025-05-21 |
| Barcode (UPC) as filed | X00155LNE7 |
| Label version · Image difference, same product | NIH DSLD 310806 |
| Label version · Image difference, same product | NIH DSLD 253907 |
| Distributed exclusively by | BulkSupplements.com, Henderson, NV, US |
15 additional rows
| Field | As filed |
|---|---|
| Claim category as filed | Nutrient |
| Claim category as filed | All Other |
| Claim category as filed | Structure/Function |
| Brand IP Statement(s) re: (c), (TM), (SM) | BulkSupplements.com Clean & pure bulk supplements |
| Formula re: Contains | Magnesium Oxide Powder 835 mg per serving |
| FDA Disclaimer Statement | Warning: This product is not intended to diagnose, treat, cure, or prevent any disease. |
| Precautions re: All Other | Always consult your physician before taking any dietary supplement. |
| Precautions re: Children | Keep out of reach of children. |
| Formulation re: Does NOT Contain | Free of: Sugar, soy, dairy, yeast, gluten, additives |
| Suggested/Recommended/Usage/Directions | Suggested Use: As a dietary supplement, take 835 mg (about 1/3 tsp) once daily with water, or as directed by a physician. |
| General Statements: All Other Content | Use an accurate milligram scale. |
| Storage | Contents are sold by weight, not volume. Settling may occur. Store in a dry, cool, dark place. |
| General Statements: All Other Content | New |
| Physical state | Powder |
| Registry snapshot | 2026-08-10 |
Source · NIH DSLD 329720 · label 2025-05-21; 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.