Magnesium L-threonate
4
labels across all brands · median 144 mg/serving
Brand · NIH DSLD
Dr. Mercola magnesium labels
Dr. Mercola files 2 on-market magnesium labels using one salt, L-threonate, with a median of 145 mg elemental magnesium per serving.
Labels (n)2
Median elemental mg/serving145 mg
Priced in gold set1
Mass budget · computed
What Dr. Mercola's declared salts weigh
A Supplement Facts panel declares the element; the salt carrying it is heavier. Dividing each label's declared magnesium by its salt's elemental fraction gives the powder mass the serving must contain — and whether that fits a capsule.
| Capsule labels audited | 1 |
|---|---|
| Fit a size 0 or 00 capsule | 1 |
| Require the largest standard size, 000 | 0 |
| Exceed every standard capsule | 0 |
Method and the corpus-wide figure: label mass-budget audit.
Salt portfolio · as filed
Which magnesium salts Dr. Mercola uses
| Salt | Labels | Elemental fraction | Compound needed per 100 mg |
|---|---|---|---|
| L-threonate | 2 | 8.25% | 1,212 mg |
Composition across the portfolio · as filed
What Dr. Mercola puts in the capsule besides magnesium
- 2 labels use a cellulose-based shell.
Label declarations · as filed
What Dr. Mercola claims on its labels
Filed declarations across this brand's labels: 1 distinct filed entries across 2 NIH DSLD labels, counted 2026-09-13; these are manufacturer statements.
- Adult (18 - 50 Years) — on 2 of 2 labels
What is not known · as of 2026-09-13
Gaps in the record for Dr. Mercola
- 1 of 2 label has no US retail listing matched as of 2026-09-13. That is a matching gap on our side, not evidence of unavailability.
Labels 2
| Magnesium AdvancedNIH DSLD · Label 327131 · Capsule | threonate | 145 mg | 30 | 4.35 g | Pending verification |
| Magnesium AdvancedNIH DSLD · Label 327132 · Capsule | form not mapped yet | Not determinable | 90 | — | Not tracked yet |
Forms filed
Compare within a form
See all brands, all labels, or the priced form tables.
Filed composition facets
4 published excipient facets occur across 2 labels from Dr. Mercola in the NIH DSLD records, counted 2026-09-13.
- ascorbyl palmitate: 2 of 2 labels.
- hydroxypropyl cellulose: 2 of 2 labels.
- hypromellose: 2 of 2 labels.
- microcrystalline cellulose: 2 of 2 labels.
FDA recall records for this firm
The FDA enforcement database holds 2 recall records naming Dr. Mercola (queried 2026-09-13); 0 of them concern a magnesium product.
These are exact brand-string matches in the recalling-firm field or product description, including other products. A name match does not establish that two similarly named firms are the same legal entity. The recalling firm and recalled product are shown in each row.
| Report date | Class | Product described by FDA | Reason for recall | Status | openFDA record |
|---|---|---|---|---|---|
| 2014-06-04 | Class II | Organic Cocoa Cassava bars, 1.59 oz (45 g), individually packaged in foil pouches and sold under the Dr. Mercola brand. Sold at retail locations in display cases containing 12 bars per display case. 12 display cases are packaged in each master case. Recalling firm: Mercola Group. Description does not name a magnesium product. | This voluntary recall has been initiated because the Dr. Mercola Organic Cocoa Cassava bars may contain undeclared milk protein. | Terminated | F-1979-2014 |
| 2012-08-08 | Class III | Dr. Mercola Miracle Whey Protein Powder, dietary supplement, packaged in 1-lb. bottles and packed 6/1 lb-bottles per case. Distributed by Mercola Health Resources, LLC, Aurora, IL. Recalling firm: Defense Nutrition. Description does not name a magnesium product. | The products contain undeclared soy lecithin | Terminated | F-1815-2012 |
FDA assigns 3 recall classes by the assessed hazard, using the FDA classification definitions, checked 2026-09-13:
- Class I: Exposure to or use of the violating product carries a reasonable probability of serious harm to health or death.
- Class II: Exposure or use may produce temporary or medically reversible harm; the probability of serious harm is remote.
- Class III: Adverse health consequences from exposure or use are unlikely.
The FDA adverse event reporting system (CAERS) holds 28 reports naming Dr. Mercola as of 2026-09-13. This is a count of submitted reports across all the firm's products; it is not an incidence rate and implies no causation.
The metric
What EC100 measures
EC100 = container price ÷ (elemental mg per serving × servings per container ÷ 100)
It normalizes the declared elemental amount to a 100 mg unit. It does not score ingredients, quality, or outcomes.