Label arithmetic · NIH DSLD 253226
KAL Magnesium Glycinate 400: 200 mg of magnesium per tablet, 2 tablets a day
200 mg of magnesium per tablet; the label's 2 tablets a day give 400 mg. No US price matched (Nov 2). Inside: salt weight, %DV check.
KAL Magnesium Glycinate 400 declares 400 mg of elemental magnesium per serving as glycinate, which means 2,837–3,381 mg of magnesium glycinate pressed into 2 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; 17 of the 73 glycinate labels in this registry have a matched price. NIH DSLD 253226, label dated 2021-07-27.
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: 1,418–1,691 mg per tablet · Price: none matched · % DV: 95% 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 is pressed into one tablet?
KAL Magnesium Glycinate 400 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 tablet or pill.
computed with assumption| Measure | Value |
|---|---|
| Elemental magnesium per serving | 400 mg |
| Units per serving | 2 |
| Magnesium glycinate per serving | 2,837–3,381 mg |
| Magnesium glycinate per tablet | 1,418–1,691 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 (bisglycinate; chelate hydration varies by supplier), so the compound mass is a range.
Source · NIH DSLD 253226 · label 2021-07-27; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
How much elemental magnesium is actually in this label's filed magnesium lines?
KAL Magnesium Glycinate 400 files 1 magnesium line in NIH DSLD 253226; 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 253226 · label 2021-07-27; 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 253226 · label 2021-07-27; 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, KAL Magnesium Glycinate 400 lasts 45 days: 45 servings against 1 serving a day in the filed directions.
computed| Measure | Value |
|---|---|
| Net contents as filed | 90 Tablet(s) |
| Serving size as filed | 2 Tablet(s) |
| Servings per container | 45 |
| Servings per day in the directions | 1 |
| Days per bottle | 45 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 253226 · label 2021-07-27; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
What does "95% Daily Value" mean here, and does it recompute?
The label declares 95% Daily Value; 400 mg against the 420 mg reference in 21 CFR 101.9 recomputes to 95%, the same within one point.
computed| Group as filed | Declared | Reference | Recomputed |
|---|---|---|---|
| Adults and children 4 or more years of age | 95% | 420 mg | 95% |
Source · NIH DSLD 253226; 21 CFR 101.9 · label 2021-07-27 · release 2026-08-10-f441aa9f · CSV · method
Why does this label contain magnesium stearate, what shell is it, and who is it filed for?
KAL Magnesium Glycinate 400 files 4 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 | Cellulose |
| 2 | Stearic Acid |
| 3 | Silica |
| 4 | Magnesium Stearate |
| Shell | vegetarian |
| Target group | Vegan |
| Target group | Vegetarian |
| Target group | Adult (18 - 50 Years) |
2 additional rows
| Entry | Filed ingredient or declaration |
|---|---|
| Target group | Gluten Free |
| Target group | Dairy Free |
Source · NIH DSLD 253226 · label 2021-07-27; 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?
KAL has 0 FDA recall records matched by brand name in the enforcement data queried 2026-10-19. KAL 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 |
|---|---|---|---|
| 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?
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 253226 · label 2021-07-27; 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 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 |
| NutriONN Magnesium Glycinate 1600 mg | 200 mg | No price | Exceeds size 000 |
Source · NIH DSLD 253226 · label 2021-07-27; 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 253226 (label 2021-07-27, 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 0 21245 81109 1). The CSV carries the values shown here.
measured| Field | As filed |
|---|---|
| NIH DSLD label | NIH DSLD 253226 |
| Label date | 2021-07-27 |
| Date entered into DSLD | 2021-07-27 |
| Barcode (UPC) as filed | 0 21245 81109 1 |
| Mfd. by | Nutraceutical Corp. |
| Manufacturer | KAL, Park City, UT, USA |
| Claim category as filed | Nutrient |
| Claim category as filed | All Other |
20 additional rows
| Field | As filed |
|---|---|
| Claim category as filed | Structure/Function |
| General Statements: All Other Content | KAL Innovative quality since 1932 |
| FDA Statement of Identity | Dietary Supplement |
| Suggested/Recommended/Usage/Directions | 2 Daily |
| Formula re: Contains | 400 mg Magnesium |
| General Statements: All Other Content | Clear Quality |
| Formulation re: Does NOT Contain | Soy Free Dairy Free |
| Formulation re: Vegetarian/Vegan | Vegan |
| Formulation re: Does NOT Contain | Free of Gluten & GMOs |
| Precautions re: All Other | Warning: Do not use if safety seal is broken or missing. |
| Precautions re: Children | Keep out of reach of children. |
| Precautions re: All Other | Keep your licensed health care practitioner informed when using this product. |
| Suggested/Recommended/Usage/Directions | Directions: Use only as directed. Take 2 tablets daily with a meal or glass of water. |
| Storage | Store in a cool, dry place. |
| Formula re: Contains | Discussion: KAL Magnesium Glycinate 400 tablets offer 400 mg Magnesium per serving in the preferred Glycinate form. |
| Formulation re: Other | Magnesium is involved in over 300 enzymatic reactions in the body and provides nutritive support for normal, healthy muscle function. |
| Formulation re: Other | ActivTab technology guarantees tablet disintegration within 30 minutes according to USP standards. |
| FDA Disclaimer Statement | These statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure or prevent any disease. |
| Physical state | Tablet or Pill |
| Registry snapshot | 2026-08-10 |
Source · NIH DSLD 253226 · label 2021-07-27; 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.