Label arithmetic · NIH DSLD 318160
Puritan's Pride Magnesium 250 mg: 250 mg of magnesium per 1 caplet, 100 servings
250 mg of magnesium in each 1 caplet, about 100 servings per 100 Coated Caplet. Salt not resolved from the NIH record. Inside: label lines, ingredients.
Puritan's Pride Magnesium 250 mg declares 250 mg of elemental magnesium per 1 caplet(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 318160, label dated 2024-09-25.
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: 60% vs 60%
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 | 250 mg |
| Units per serving | 1 |
| 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 318160 · label 2024-09-25; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
How much elemental magnesium is actually in this label's filed magnesium lines?
Puritan's Pride Magnesium 250 mg files 1 magnesium line in NIH DSLD 318160; the selected primary line declares 250 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 |
|---|---|---|
| 250 mg | Salt not named in this row as of 2026-11-02 | Primary serving |
Source · NIH DSLD 318160 · label 2024-09-25; 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 318160 · label 2024-09-25; 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, 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, Puritan's Pride Magnesium 250 mg lasts 50–100 days: 100 servings against 1–2 servings a day in the filed directions.
computed| Measure | Value |
|---|---|
| Net contents as filed | 100 Coated Caplet(s) |
| Serving size as filed | 1 Caplet(s) |
| Servings per container | 100 |
| Servings per day in the directions | 1–2 |
| Days per bottle | 50–100 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 318160 · label 2024-09-25; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
What does "60% Daily Value" mean here, and does it recompute?
The label declares 60% Daily Value; 250 mg against the 420 mg reference in 21 CFR 101.9 recomputes to 60%, the same within one point.
computed| Group as filed | Declared | Reference | Recomputed |
|---|---|---|---|
| Adults and children 4 or more years of age | 60% | 420 mg | 60% |
Source · NIH DSLD 318160; 21 CFR 101.9 · label 2024-09-25 · release 2026-08-10-f441aa9f · CSV · method
Why does this label contain magnesium stearate, what shell is it, and who is it filed for?
Puritan's Pride Magnesium 250 mg files 5 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 | Cellulose |
| 2 | Carnauba Wax |
| 3 | Silica |
| 4 | Glycerin |
| 5 | Magnesium Stearate |
| Shell | vegetarian |
| 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 318160 · label 2024-09-25; 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?
Puritan's Pride has 1 FDA recall record matched by brand name in the enforcement data queried 2026-10-19. Puritan's Pride 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-1835-2018 | 2018-08-29 | High level of microcystin observed in the product. | 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?
Same filed formulation as 1 other labels of this brand; no other brand files it as of 2026-11-02.
computed| Label | Brand | Price per 100 mg |
|---|---|---|
| No cross-brand match as of 2026-11-02 |
Source · NIH DSLD 318160 · label 2024-09-25; 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 318160 · label 2024-09-25; 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 318160 (label 2024-09-25, 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 74312 15830 8); 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 318160 |
| Scanned label (PDF) | Label 318160 scan |
| Label date | 2024-09-25 |
| Date entered into DSLD | 2024-09-25 |
| Barcode (UPC) as filed | 0 74312 15830 8 |
| Label version · Image difference, same product | NIH DSLD 242408 |
| Label version · Image difference, same product | NIH DSLD 62003 |
| Label version · Image difference, same product | NIH DSLD 73790 |
28 additional rows
| Field | As filed |
|---|---|
| Label version · Image difference, same product | NIH DSLD 87523 |
| Label version · Package size difference, same product | NIH DSLD 242408 |
| Label version · Package size difference, same product | NIH DSLD 73829 |
| Label version · Package size difference, same product | NIH DSLD 285042 |
| Label version · Package size difference, same product | NIH DSLD 62003 |
| Label version · Package size difference, same product | NIH DSLD 73790 |
| Label version · Package size difference, same product | NIH DSLD 87523 |
| Label version · Package size difference, same product | NIH DSLD 318295 |
| Carefully Manufactured by | Puritan's Pride, Inc., Ronkonkoma, NY, U.S.A. |
| Claim category as filed | Nutrient |
| Claim category as filed | All Other |
| Claim category as filed | Structure/Function |
| General Statements: All Other Content | Puritan's Pride supplements are produced from the finest raw materials under stringent quality control standards. State-of-the-art manufacturing and packaging facilities ensure you the highest quality nutritional supplements money can buy. When it comes to your health... choose the best. |
| Precautions re: Pregnant or Nursing or Prescription Medications | Warning: If you are pregnant, nursing, taking any medications or have any medical condition, consult your doctor before use. |
| Precautions re: All Other | Discontinue use and consult your doctor if any adverse reactions occur. Do not use if seal under cap is broken or missing. |
| Precautions re: Children | Keep out of reach of children. |
| Storage | Store at room temperature. |
| 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. |
| Brand IP Statement(s) re: (c), (TM), (SM) | Copyright 2022 Puritan's Pride, Inc. |
| Formulation re: Other | Different color Same product |
| Formulation re: Vegetarian/Vegan | Vegetarian |
| FDA Statement of Identity | Dietary Supplement |
| Suggested/Recommended/Usage/Directions | Directions: For adults, take one (1) caplet up to two times daily, preferably with meals. |
| Formula re: Contains | Magnesium plays an essential role in maintaining proper bone mineralization. Magnesium is also involved in muscle contractions and nerve impulses. |
| Formulation re: Other | Contains ingredients that may results in a variation of color and appearance over time. |
| Formulation re: Does NOT Contain | No artificial color, flavor or sweetener, no sugar, no starch, no milk, no lactose, no soy, no gluten, no wheat, no yeast, no fish. Sodium free. |
| Physical state | Other (e.g. tea bag) |
| Registry snapshot | 2026-08-10 |
Source · NIH DSLD 318160 · label 2024-09-25; 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.