Label arithmetic · NIH DSLD 243072
GNC Magnesium 250 mg Strawberry Natural Flavor: 250 mg of magnesium per serving, 1–2 servings a day
250 mg of magnesium per serving. Citrate is 11.3–16.2% magnesium; no US price matched (Nov 2). Inside: label lines, ingredients.
GNC Magnesium 250 mg Strawberry Natural Flavor declares 250 mg of elemental magnesium per serving as citrate, which means 1,547–2,212 mg of magnesium citrate compound in one 1–2 soft chew(s), compared with 1,100 mg in the largest standard capsule; capsule verdicts do not apply to this other (e.g. tea bag). No US retail price matched as of 2026-11-02; 17 of the 135 citrate labels in this registry have a matched price. NIH DSLD 243072, label dated 2021-01-22.
computed from the filed label
Chart data
| Displayed chart text |
|---|
| gluconate |
| 4,266 |
| orotate |
| 3,439 |
| L-threonate |
| 3,030 |
| taurate |
| 2,803 |
| lactate |
| 2,082 |
| glycerophosphate |
| 2,000 |
| glycinate |
| 1,773 |
| malate |
| 1,609 |
| aspartate |
| 1,598 |
| citrate |
| 1,547 |
| sulfate |
| 1,238 |
| chloride |
| 979 |
| carbonate |
| 867 |
| hydroxide |
| 600 |
| oxide |
| 414 |
Data release 2026-08-10-f441aa9f · registry snapshot 2026-08-10 · latest price observation 2026-10-19 · chemistry 2026-10-17
Mass: 774–1,106 mg per serving · 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 citrate compound is in one serving?
GNC Magnesium 250 mg Strawberry Natural Flavor carries 1,547–2,212 mg of magnesium citrate per serving for 250 mg of elemental magnesium, against 1,100 mg in the largest standard capsule; capsule capacities do not apply to this other (e.g. tea bag).
computed with assumption| Measure | Value |
|---|---|
| Elemental magnesium per serving | 250 mg |
| Units per serving | 1–2 |
| Magnesium citrate per serving | 1,547–2,212 mg |
| Magnesium citrate per serving | 774–1,106 mg |
| 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 (trimagnesium dicitrate 16.2%; dibasic and hydrated forms as low as 11.3%), so the compound mass is a range.
Source · NIH DSLD 243072 · label 2021-01-22; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
How much elemental magnesium is actually in this label's filed magnesium lines?
GNC Magnesium 250 mg Strawberry Natural Flavor files 1 magnesium line in NIH DSLD 243072; 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 | citrate · Magnesium (Form: as Magnesium Citrate) | Primary serving |
Source · NIH DSLD 243072 · label 2021-01-22; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
Does this label's citrate claim hold up, or could the magnesium come from another source?
The label names one magnesium form, citrate, 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 citrate | 11.3–16.2% | filed magnesium line |
Source · NIH DSLD 243072 · label 2021-01-22; 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; 17 of 135 citrate labels have one, against a median of $0.1159 per 100 mg among 12 ranked citrate offers.
computed
Chart data
| Displayed chart text |
|---|
| n=12 |
| P25 $0.0843 |
| P75 $0.1469 |
| median $0.1159 |
| Rank | Label | Per 100 mg | Observed |
|---|---|---|---|
| 1 | Best Naturals Magnesium Citrate 200 mg | $0.0344 | 2026-11-02 |
| 2 | Solgar Magnesium Citrate | $0.0607 | 2026-11-02 |
| 3 | LES Labs Magnesium Citrate | $0.0777 | 2026-11-02 |
| 4 | Bluebonnet Magnesium Citrate | $0.0865 | 2026-11-02 |
| 5 | Solaray Magnesium Citrate 400 mg | $0.0868 | 2026-11-02 |
| Median | 12 ranked citrate offers | $0.1159 | 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, GNC Magnesium 250 mg Strawberry Natural Flavor lasts 30 days: 30 servings against 1 serving a day in the filed directions.
computed| Measure | Value |
|---|---|
| Net contents as filed | 60 Delicious Soft Chew(s) |
| Serving size as filed | 1–2 Soft Chew(s) |
| Servings per container | 30 |
| Servings per day in the directions | 1 |
| Days per bottle | 30 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 243072 · label 2021-01-22; 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 243072; 21 CFR 101.9 · label 2021-01-22 · 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?
GNC Magnesium 250 mg Strawberry Natural Flavor files 12 other ingredients and a gelatin shell, and no magnesium stearate, against 43 of 135 citrate labels that list magnesium stearate.
measured| Entry | Filed ingredient or declaration |
|---|---|
| 1 | Maltitol syrup |
| 2 | Isomalt |
| 3 | Natural flavors |
| 4 | Maltodextrin |
| 5 | Gelatin |
| 6 | Palm Oil |
| 7 | Soy Lecithin |
| 8 | Citric Acid |
8 additional rows
| Entry | Filed ingredient or declaration |
|---|---|
| 9 | Malic Acid |
| 10 | Glycerin |
| 11 | Sucralose |
| 12 | FD&C Red #40 |
| Shell | gelatin |
| Target group | Adult (18 - 50 Years) |
| Target group | Gluten Free |
| Target group | Sugar Free |
Source · NIH DSLD 243072 · label 2021-01-22; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
What has research measured about citrate, and about side effects?
10 studies in the PubMed-checked registry measured outcomes involving citrate; 1 mention gastrointestinal or adverse outcomes. They measured the salt, not this label.
measured| Year | Study | PubMed |
|---|---|---|
| 2025 | Comparing the Bioavailability of Two Seawater-Derived Magnesium Preparations. | 40955524 |
| 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?
GNC has 3 FDA recall records matched by brand name in the enforcement data queried 2026-10-19. GNC 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-0626-2017 | 2016-12-14 | Undeclared Allergen: Milk. | Terminated |
| F-1734-2022 | 2022-09-21 | The firm was notified by a customer that the bottle contains green and white capsules instead of the usual white round tablets. They contacted their manufacturer to investigate the issue and the manufacture stated that there was a problem at the filling line. Bottles labeled as Vitamin B6 actually contained Pycnogenol. | Terminated |
| F-0928-2025 | 2025-06-11 | Undeclared Fish allergen (parvalbumin). | 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 243072 · label 2021-01-22; 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 243072 · label 2021-01-22; 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 243072 (label 2021-01-22, 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 243072 |
| Label date | 2021-01-22 |
| Date entered into DSLD | 2021-01-22 |
| Barcode (UPC) as filed | Not filed as of 2026-11-02 |
| Label version · Image difference, same product | NIH DSLD 75191 |
| Distributed by | General Nutrition Corporation, Pittsburgh, PA, USA |
| Claim category as filed | Nutrient |
| Claim category as filed | All Other |
17 additional rows
| Field | As filed |
|---|---|
| Claim category as filed | Structure/Function |
| Formula re: Contains | Made with a highly absorbable form of magnesium |
| Formulation re: Other | Essential for strong bones & teeth Necessary for muscle & nerve function |
| Formula re: Contains | Strawberry Natural flavor 250 mg per 2 chews |
| FDA Statement of Identity | Dietary Supplement |
| General Statements: All Other Content | 30 servings |
| Suggested/Recommended/Usage/Directions | Directions: As a dietary supplement, enjoy one to two soft chews daily. |
| Precautions re: Allergies | Contains: Soybeans. |
| Formulation re: Does NOT Contain | No sugar, gluten free. |
| Precautions re: Children | Keep out of reach of children. |
| Storage | Store in a cool, dry place. |
| Formula re: Contains | Magnesium Soft Chews are a convenient alternative to pills and a great addition to your daily nutrition and health regimen. Just two soft chews provide 250 mg of magnesium, an essential mineral. Our Magnesium Soft Chews are made with magnesium citrate, a form of magnesium that is absorbed more easily by the body so you get the maximum benefits. Magnesium helps build strong bones and maintain healthy teeth. It's also involved in heart, skeletal muscle, nerve and cell function, and it's required by the body for energy production. |
| Formulation re: Other | These delicious soft chews are gluten and sugar free. Plus, they're individually wrapped, making them easy to take on the go. |
| 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. |
| General Statements: All Other Content | Our quality commitment to you Since 1935, our mission as the industry leader has been to provide you with the highest-quality nutritional supplements. We continue to stand behind this mission. If you're not 100% satisfied with your purchase, return the unused portion of the product with your receipt within 30 days and we'll either refund your money or find a replacement product that is right for you. |
| Physical state | Other (e.g. tea bag) |
| Registry snapshot | 2026-08-10 |
Source · NIH DSLD 243072 · label 2021-01-22; 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.