Label arithmetic · NIH DSLD 338281
Swolverine Magnesium Bisglycinate: 200 mg of magnesium per capsule, 1–2 capsules a day
200 mg of magnesium per capsule takes 1,418–1,691 mg of glycinate; size 000 holds about 1,100 mg (model). Inside: salt weight, capsule size.
Estimated salt mass versus assumed capsule capacity: Swolverine Magnesium Bisglycinate implies 1,418–1,691 mg of magnesium glycinate per capsule from 200 mg elemental magnesium per serving, above the assumed 1,100 mg capacity of size 000 at powder density 0.8 g/mL, the top of the usual 0.6–0.8 range, calculated 2026-11-02. 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 338281, label dated 2025-09-25.
computed from the filed label
Chart data
| Displayed chart text |
|---|
| 545 mg |
| 730 mg |
| 1,100 mg |
| 1,418–1,691 mg of glycinate per capsule |
Data release 2026-08-10-f441aa9f · registry snapshot 2026-08-10 · latest price observation 2026-10-19 · chemistry 2026-10-17
Mass: 1,418–1,691 mg per capsule · Price: none matched · % DV: 48% vs 48%
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.
Estimated salt mass versus assumed capsule capacity
Estimated salt mass versus assumed capsule capacity: Swolverine Magnesium Bisglycinate implies 1,418–1,691 mg of magnesium glycinate in each capsule to deliver 200 mg of elemental magnesium, against 1,100 mg in the largest standard capsule (size 000) at powder density 0.8 g/mL, the top of the usual 0.6–0.8 range. Verdict: exceeds size 000, read at the most favourable hydration and the most units per serving.
computed with assumption| Measure | Value |
|---|---|
| Elemental magnesium per serving | 200 mg |
| Units per serving | 1 |
| Magnesium glycinate per serving | 1,418–1,691 mg |
| Magnesium glycinate per capsule | 1,418–1,691 mg |
| Capsule capacity 0 · 00 · 000 | 545 · 730 · 1,100 mg |
| Verdict | Exceeds size 000 |
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 338281 · label 2025-09-25; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
How much elemental magnesium is actually in this label's filed magnesium lines?
Swolverine Magnesium Bisglycinate files 1 magnesium line in NIH DSLD 338281; the selected primary line declares 200 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 |
|---|---|---|
| 200 mg | Salt not named in this row; magnesium glycinate is taken from the label text | Primary serving |
Source · NIH DSLD 338281 · label 2025-09-25; 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?
For this declaration to fit one size 000 capsule, at least 29% of the magnesium would have to come from a salt richer in magnesium, such as magnesium oxide (computed at powder density 0.8 g/mL, the top of the usual 0.6–0.8 range), 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% | full NIH DSLD record text |
Source · NIH DSLD 338281 · label 2025-09-25; 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; 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, Swolverine Magnesium Bisglycinate lasts 30–60 days: 60 servings against 1–2 servings a day in the filed directions.
computed| Measure | Value |
|---|---|
| Net contents as filed | 60 Capsule(s) |
| Serving size as filed | 1 Vegetable Capsule(s) |
| Servings per container | 60 |
| Servings per day in the directions | 1–2 |
| Days per bottle | 30–60 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 338281 · label 2025-09-25; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
What does "48% Daily Value" mean here, and does it recompute?
The label declares 48% Daily Value; 200 mg against the 420 mg reference in 21 CFR 101.9 recomputes to 48%, the same within one point.
computed| Group as filed | Declared | Reference | Recomputed |
|---|---|---|---|
| Adults and children 4 or more years of age | 48% | 420 mg | 48% |
Source · NIH DSLD 338281; 21 CFR 101.9 · label 2025-09-25 · release 2026-08-10-f441aa9f · CSV · method
Why does this label contain magnesium stearate, what shell is it, and who is it filed for?
Swolverine Magnesium Bisglycinate files 3 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, against 28 of 73 glycinate labels that list magnesium stearate.
measured| Entry | Filed ingredient or declaration |
|---|---|
| 1 | Hydroxypropyl Methylcellulose |
| 2 | Magnesium Stearate |
| 3 | Silicon Dioxide |
| Shell | vegetarian |
| Target group | Vegetarian |
| Target group | Adult (18 - 50 Years) |
| Target group | Gluten Free |
Source · NIH DSLD 338281 · label 2025-09-25; 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?
Swolverine has 0 FDA recall records matched by brand name in the enforcement data queried 2026-10-19. Swolverine 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 338281 · label 2025-09-25; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
Which labels are closest to this one, with the same salt and dose?
6 labels use the same resolved glycinate within ±10% of this label's 200 mg per unit, compared side by side on price and capsule verdict.
computed| Label | Elemental per unit | Price | Verdict |
|---|---|---|---|
| The Vitamin Shoppe Magnesium Glycinate 400 mg (DSLD 204459) | 200 mg | $19.99 · 2026-11-02 | Capsule sizes do not apply |
| The Vitamin Shoppe Magnesium Glycinate 400 mg (DSLD 208724) | 200 mg | $34.99 · 2026-11-02 | Capsule sizes do not apply |
| KAL Magnesium Glycinate 400 (DSLD 253226) | 200 mg | No price | Capsule sizes do not apply |
| KAL Magnesium Glycinate 400 (DSLD 255079) | 200 mg | No price | Capsule sizes do not apply |
| KAL Magnesium Glycinate 400 (DSLD 255081) | 200 mg | No price | Capsule sizes do not apply |
| KAL Magnesium Glycinate 400 (DSLD 255082) | 200 mg | No price | Capsule sizes do not apply |
Source · NIH DSLD 338281 · label 2025-09-25; 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 338281 (label 2025-09-25, 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 (barcode 8 50037 32779 9). The CSV carries the values shown here.
measured| Field | As filed |
|---|---|
| NIH DSLD label | NIH DSLD 338281 |
| Scanned label (PDF) | Label 338281 scan |
| Label date | 2025-09-25 |
| Date entered into DSLD | 2025-09-25 |
| Barcode (UPC) as filed | 8 50037 32779 9 |
| Manufactured for | Swolverine, Reno, NV |
| Claim category as filed | Nutrient |
| Claim category as filed | All Other |
22 additional rows
| Field | As filed |
|---|---|
| Claim category as filed | Structure/Function |
| General Statements: All Other Content | We supplement the fit to become the fittest |
| Formula re: Contains | Swolverine's Magnesium Bisglycinate is a premium, high-absorption magnesium supplement designed to support muscle recovery, reduce cramps, and promote relaxation. Formulated with TRAACS Magnesium Bisglycinate from Albion, this chelated form of magnesium is more bioavailable and easier on the stomach than other forms, ensuring optimal absorption without digestive discomfort. Whether you're an athlete pushing your limits or simply looking to support overall wellness, Magnesium Bisglycinate helps keep your body performing at its best. |
| Suggested/Recommended/Usage/Directions | Suggested use 1 capsule taken 1 to 2 times daily preferably with meals or as directed by a healthcare professional. |
| Precautions re: All Other | Caution Do not exceed recommended dose. |
| Precautions re: Pregnant or Nursing or Prescription Medications | Pregnant or nursing mothers, children under 18 and individuals with a known medical condition should consult a physician before using this or an dietary supplement. |
| Precautions re: Children | Pregnant or nursing mothers, children under 18 and individuals with a known medical condition should consult a physician before using this or an dietary supplement. Keep out of reach of children. |
| Precautions re: Allergies | This product is manufactured and packaged in a facility which may also process milk, soy, wheat, egg, peanuts, tree nuts, fish and crustacean shellfish. |
| Precautions re: All Other | Do not use if safety seal is damaged or missing. |
| Storage | Store in a cool, dry place. |
| 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 | Follow us on Twitter Pinterest Instagram Facebook |
| Formula re: Contains | Made with TRAACS magnesium from Albion |
| Formulation re: Other | Supports Vitality Energy Recovery |
| FDA Statement of Identity | Dietary Supplement |
| Brand IP Statement(s) re: (c), (TM), (SM) | Albion and the Albion Gold Medallion design are registered trademarks of Balchem Corporation or its subsidiaries. |
| Formula re: Contains | Albion Minerals |
| Formulation re: Vegetarian/Vegan | V (vegetarian) |
| Formulation re: Does NOT Contain | Non GMO GF (gluten free) (No) S |
| Formulation re: Other | Sourced from a GMP certified facility. Formulated in USA. |
| Physical state | Capsule |
| Registry snapshot | 2026-08-10 |
Source · NIH DSLD 338281 · label 2025-09-25; 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.