Label arithmetic · NIH DSLD 23165
PureBulk.com Magnesium Glycinate: 400 mg of magnesium per serving
400 mg of magnesium per serving. Glycinate is 11.8–14.1% magnesium; no US price matched (Nov 2). Inside: salt per scoop, %DV check.
PureBulk.com Magnesium Glycinate declares 400 mg of elemental magnesium per serving as glycinate, which means 2,837–3,381 mg of magnesium glycinate powder in one serving, compared with 1,100 mg in the largest standard capsule; that is the weight of the salt alone, before any fillers or flavours in the scoop. No US retail price matched as of 2026-11-02; 17 of the 73 glycinate labels in this registry have a matched price. NIH DSLD 23165, label dated 2013-06-25.
computed from the filed label
Chart data
| Displayed chart text |
|---|
| gluconate |
| 6,826 |
| orotate |
| 5,502 |
| L-threonate |
| 4,848 |
| taurate |
| 4,484 |
| lactate |
| 3,331 |
| glycerophosphate |
| 3,200 |
| glycinate |
| 2,837 |
| malate |
| 2,574 |
| aspartate |
| 2,558 |
| citrate |
| 2,475 |
| sulfate |
| 1,981 |
| chloride |
| 1,567 |
| carbonate |
| 1,387 |
| hydroxide |
| 960 |
| oxide |
| 663 |
Data release 2026-08-10-f441aa9f · registry snapshot 2026-08-10 · latest price observation 2026-10-19 · chemistry 2026-10-17
Mass: 2,837–3,381 mg per serving · Price: none matched · % DV: 100% vs 95%
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 glycinate powder is in one scoop?
PureBulk.com Magnesium Glycinate carries 2,837–3,381 mg of magnesium glycinate per serving for 400 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 | 400 mg |
| Units per serving | Not a discrete unit as of 2026-11-02 |
| Magnesium glycinate per serving | 2,837–3,381 mg |
| Magnesium glycinate 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 |
The filed salt can have more than one hydration state (bisglycinate; chelate hydration varies by supplier), so the compound mass is a range.
Source · NIH DSLD 23165 · label 2013-06-25; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
How much elemental magnesium is actually in this label's filed magnesium lines?
PureBulk.com Magnesium Glycinate files 1 magnesium line in NIH DSLD 23165; the selected primary line declares 400 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 |
|---|---|---|
| 400 mg | glycinate · Magnesium (Form: as Magnesium Glycinate) | Primary serving |
Source · NIH DSLD 23165 · label 2013-06-25; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
Does this label's glycinate claim hold up, or could the magnesium come from another source?
The label names one magnesium form, glycinate, resolved from the filed magnesium line; 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 glycinate | 11.8–14.1% | filed magnesium line |
Source · NIH DSLD 23165 · label 2013-06-25; 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; 17 of 73 glycinate labels have one, against a median of $0.1889 per 100 mg among 17 ranked glycinate offers.
computed
Chart data
| Displayed chart text |
|---|
| n=17 |
| P25 $0.1338 |
| P75 $0.2216 |
| median $0.1889 |
| Rank | Label | Per 100 mg | Observed |
|---|---|---|---|
| 1 | Amazon Elements Chelated Magnesium 270 mg | $0.0666 | 2026-11-02 |
| 2 | Solgar Chelated Magnesium | $0.0930 | 2026-11-02 |
| 3 | tnvitamins Magnesium Glycinate 300 mg | $0.0962 | 2026-11-02 |
| 4 | New Chapter Magnesium + Ashwagandha | $0.1229 | 2026-11-02 |
| 5 | Windmill Magnesium Glycinate 200 mg | $0.1338 | 2026-11-02 |
| Median | 17 ranked glycinate offers | $0.1889 | 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, PureBulk.com Magnesium Glycinate lasts 156 days: 156 servings against 1 serving a day in the filed directions.
computed| Measure | Value |
|---|---|
| Net contents as filed | 250 g; 8.82 oz. |
| Serving size as filed | 800–1600 mg |
| Servings per container | 156 |
| Servings per day in the directions | 1 |
| Days per bottle | 156 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 23165 · label 2013-06-25; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
What does "100% Daily Value" mean here, and does it recompute?
The label declares 100% Daily Value; 400 mg against the 420 mg reference in 21 CFR 101.9 recomputes to 95%, a difference of 5 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 |
| 95 · 100 |
| Declared vs |
| recomputed % DV |
| Group as filed | Declared | Reference | Recomputed |
|---|---|---|---|
| Adults and children 4 or more years of age | 100% | 420 mg | 95% |
Source · NIH DSLD 23165; 21 CFR 101.9 · label 2013-06-25 · 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?
PureBulk.com Magnesium Glycinate files 1 other ingredient, and no magnesium stearate, against 28 of 73 glycinate labels that list magnesium stearate.
measured| Entry | Filed ingredient or declaration |
|---|---|
| 1 | None |
| Target group | Adult (18 - 50 Years) |
| Target group | Gluten Free |
| Target group | Dairy Free |
Source · NIH DSLD 23165 · label 2013-06-25; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
What has research measured about glycinate, and about side effects?
6 studies in the PubMed-checked registry measured outcomes involving glycinate; 2 mention gastrointestinal or adverse outcomes. They measured the salt, not this label.
measured| Year | Study | PubMed |
|---|---|---|
| 2024 | Comparative Clinical Study on Magnesium Absorption and Side Effects After Oral Intake of Microencapsulated Magnesium (MAGSHAPE™ Microcapsules) Versus Other Magnesium Sources. | 39770988 |
| 2024 | The bioaccessibility and tolerability of marine-derived sources of magnesium and calcium. | 38608850 |
| 2020 | Dose-Dependent Absorption Profile of Different Magnesium Compounds | 30761462 |
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?
PureBulk.com has 0 FDA recall records matched by brand name in the enforcement data queried 2026-10-19. PureBulk.com 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 23165 · label 2013-06-25; 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 23165 · label 2013-06-25; 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 23165 (label 2013-06-25, snapshot 2026-08-10) and the chemistry model of 2026-09-13. 1 gap remain: No US retail price matched as of 2026-11-02; no barcode is filed. The CSV carries the values shown here.
measured| Field | As filed |
|---|---|
| NIH DSLD label | NIH DSLD 23165 |
| Label date | 2013-06-25 |
| Date entered into DSLD | 2013-06-25 |
| Barcode (UPC) as filed | Not filed as of 2026-11-02 |
| Manufacturer | PureBulk.com, Roseburg, OR, USA |
| Claim category as filed | All Other |
| Claim category as filed | Structure/Function |
| Storage | Storage: Keep dry, cool & dark |
9 additional rows
| Field | As filed |
|---|---|
| Formulation re: Does NOT Contain | Free of: soy, dairy, yeast, gluten, corn and additives. |
| Suggested/Recommended/Usage/Directions | Directions: As a dietary supplement, take 800 mg (1/4 tsp) to 1600 mg (1/2 tsp) daily with a meal, or as directed by physician. |
| General Statements: All Other Content | US Standard Measuring Spoons Spoon Size (level) milligrams 1/4 teaspoon 779 1/2 teaspoon 1560 1 teaspoon 3120 |
| Precautions re: Pregnant or Nursing or Prescription Medications | Warning: This product is not intended for use by those with a serious medical condition or pregnant or lactating women. |
| Precautions re: All Other | Consult your physician before use. |
| Precautions re: Children | Keep out of reach of children. |
| 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. |
| Physical state | Powder |
| Registry snapshot | 2026-08-10 |
Source · NIH DSLD 23165 · label 2013-06-25; 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.