Label arithmetic · NIH DSLD 31345
The Vitamin Shoppe Magnesium Potassium Aspartate: 100 mg of magnesium per serving, 1–3 tablets a day
100 mg of magnesium per serving. No US price matched (Nov 2). Inside: salt weight, %DV check.
The Vitamin Shoppe Magnesium Potassium Aspartate declares 100 mg of elemental magnesium per serving as aspartate, which means 639–1,335 mg of magnesium aspartate pressed into 1–3 tablets, compared with 1,100 mg in the largest standard capsule; capsule verdicts do not apply to a tablet. No US retail price matched as of 2026-11-02; 3 of the 25 aspartate labels in this registry have a matched price. NIH DSLD 31345, label dated 2014-03-25.
computed from the filed label
Chart data
| Displayed chart text |
|---|
| gluconate |
| 1,706 |
| orotate |
| 1,376 |
| L-threonate |
| 1,212 |
| taurate |
| 1,121 |
| lactate |
| 833 |
| glycerophosphate |
| 800 |
| glycinate |
| 709 |
| malate |
| 644 |
| aspartate |
| 639 |
| citrate |
| 619 |
| sulfate |
| 495 |
| chloride |
| 392 |
| carbonate |
| 347 |
| hydroxide |
| 240 |
| oxide |
| 166 |
Data release 2026-08-10-f441aa9f · registry snapshot 2026-08-10 · latest price observation 2026-10-19 · chemistry 2026-10-17
Mass: 213–445 mg per tablet · Price: none matched · % DV: 25% vs 24%
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 aspartate is pressed into one tablet?
The Vitamin Shoppe Magnesium Potassium Aspartate carries 639–1,335 mg of magnesium aspartate per serving for 100 mg of elemental magnesium, against 1,100 mg in the largest standard capsule; capsule capacities do not apply to this tablet or pill.
computed with assumption| Measure | Value |
|---|---|
| Elemental magnesium per serving | 100 mg |
| Units per serving | 1–3 |
| Magnesium aspartate per serving | 639–1,335 mg |
| Magnesium aspartate per tablet | 213–445 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 (1:1 magnesium aspartate 15.64%; bis(hydrogen aspartate) 8.42%, its dihydrate 7.49%; stoichiometry and hydration unresolved), so the compound mass is a range.
Source · NIH DSLD 31345 · label 2014-03-25; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
How much elemental magnesium is actually in this label's filed magnesium lines?
The Vitamin Shoppe Magnesium Potassium Aspartate files 1 magnesium line in NIH DSLD 31345; the selected primary line declares 100 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 |
|---|---|---|
| 100 mg | aspartate · Magnesium (Form: as Magnesium Aspartate) | Primary serving |
Source · NIH DSLD 31345 · label 2014-03-25; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
Does this label's aspartate claim hold up, or could the magnesium come from another source?
The label names one magnesium form, aspartate, 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 aspartate | 7.5–15.6% | filed magnesium line |
Source · NIH DSLD 31345 · label 2014-03-25; 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; 3 of 25 aspartate labels have one, against a median of none per 100 mg among 0 ranked aspartate offers.
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?
Days per bottle cannot be computed for The Vitamin Shoppe Magnesium Potassium Aspartate as of 2026-11-02: servings per container are not filed.
computed| Measure | Value |
|---|---|
| Net contents as filed | 300 Tablet(s) |
| Serving size as filed | 1–3 Tablet(s) |
| Servings per container | Not filed as of 2026-11-02 |
| Servings per day in the directions | 1 |
| Days per bottle | Not computable as of 2026-11-02 |
| $ 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 31345 · label 2014-03-25; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
What does "25% Daily Value" mean here, and does it recompute?
The label declares 25% Daily Value; 100 mg against the 420 mg reference in 21 CFR 101.9 recomputes to 24%, the same within one point.
computed| Group as filed | Declared | Reference | Recomputed |
|---|---|---|---|
| Adults and children 4 or more years of age | 25% | 420 mg | 24% |
Source · NIH DSLD 31345; 21 CFR 101.9 · label 2014-03-25 · release 2026-08-10-f441aa9f · CSV · method
Why does this label contain magnesium stearate, what shell is it, and who is it filed for?
The Vitamin Shoppe Magnesium Potassium Aspartate files 9 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 15 of 25 aspartate labels that list magnesium stearate.
measured| Entry | Filed ingredient or declaration |
|---|---|
| 1 | Dicalcium Phosphate |
| 2 | Stearic Acid |
| 3 | Croscarmellose Sodium |
| 4 | Magnesium Stearate |
| 5 | Silicon Dioxide |
| 6 | purified Water |
| 7 | Hydroxypropyl Methylcellulose |
| 8 | Polyethylene Glycol |
6 additional rows
| Entry | Filed ingredient or declaration |
|---|---|
| 9 | Titanium Dioxide |
| Shell | vegetarian |
| Target group | Adult (18 - 50 Years) |
| Target group | Gluten Free |
| Target group | Dairy Free |
| Target group | Sugar Free |
Source · NIH DSLD 31345 · label 2014-03-25; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
What has research measured about aspartate, and about side effects?
2 studies in the PubMed-checked registry measured outcomes involving aspartate; none reports a gastrointestinal outcome as of 2026-11-02. They measured the salt, not this label.
measured| Year | Study | PubMed |
|---|---|---|
| 2005 | Study of magnesium bioavailability from ten organic and inorganic Mg salts in Mg-depleted rats using a stable isotope approach | 16548135 |
| 2001 | Bioavailability of US commercial magnesium preparations | 11794633 |
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?
The Vitamin Shoppe has 1 FDA recall record matched by brand name in the enforcement data queried 2026-10-19. The Vitamin Shoppe 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-1143-2020 | 2020-08-12 | Sample analysis revealed product is sub-potent for Vitamin D | 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 31345 · label 2014-03-25; 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 31345 · label 2014-03-25; 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 31345 (label 2014-03-25, snapshot 2026-08-10) and the chemistry model of 2026-09-13. 2 gaps remain: No US retail price matched as of 2026-11-02 (barcode 7 66536 01283 1); Servings per container are not filed as of 2026-11-02. The CSV carries the values shown here.
measured| Field | As filed |
|---|---|
| NIH DSLD label | NIH DSLD 31345 |
| Label date | 2014-03-25 |
| Date entered into DSLD | 2014-03-25 |
| Barcode (UPC) as filed | 7 66536 01283 1 |
| Label version · Package size difference, same product | NIH DSLD 31344 |
| Label version · Package size difference, same product | NIH DSLD 84700 |
| Distributed by | Vitamin Shoppe, Inc., Secaucus, NJ |
| Claim category as filed | Nutrient |
21 additional rows
| Field | As filed |
|---|---|
| Claim category as filed | All Other |
| Claim category as filed | Structure/Function |
| General Statements: All Other Content | mineral |
| FDA Statement of Identity | dietary supplement |
| Formula re: Contains | well absorbed form of chelated potassium and magnesium |
| Formulation re: Does NOT Contain | gluten free dairy free soy free nut free |
| General Statements: All Other Content | {tablet} actual size |
| Formulation re: Does NOT Contain | Does not contain: Yeast, Corn, Wheat, Gluten, Sugar, Salt, Soy, Starch, Dairy, Citrus, Fish, Animal Derivatives, Preservatives, Artificial Colors or Flavors. |
| 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. |
| Suggested/Recommended/Usage/Directions | DIRECTIONS: As a dietary supplement, take one (1) to three (3) tablets daily, preferably one with each meal. |
| Precautions re: Pregnant or Nursing or Prescription Medications | WARNING: Consult your healthcare provider prior to use if you are pregnant, nursing, taking any medication or have any medical conditions. |
| Storage | STORE IN A COOL, DRY PLACE. |
| Precautions re: Children | KEEP OUT OF REACH OF CHILDREN. |
| Precautions re: All Other | TAMPER EVIDENT Do not use if outer seal is broken or missing. |
| General Statements: All Other Content | {QRC} learn more at vsquality.net |
| General Statements: All Other Content | Visit www.vitaminshoppe.com or call 1-800-223-1216 for more information and to reorder. |
| General: Product/Version Code | Item No. VS-1283 1043626 BO 1 |
| General Statements: All Other Content | energy production |
| Seals/Symbols | V SUITABLE FOR MOST VEGETARIANS |
| Physical state | Tablet or Pill |
| Registry snapshot | 2026-08-10 |
Source · NIH DSLD 31345 · label 2014-03-25; 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.