Magnesium glycinate
65
labels across all brands · median 300 mg/serving
Brand · NIH DSLD
Kirkman magnesium labels
Kirkman files 4 on-market magnesium labels using 3 different salts, with a median of 130 mg elemental magnesium per serving.
Labels (n)4
Median elemental mg/serving130 mg
Priced in gold set0
Mass budget · computed
What Kirkman'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 | 3 |
|---|---|
| Fit a size 0 or 00 capsule | 2 |
| Require the largest standard size, 000 | 1 |
| Exceed every standard capsule | 0 |
Method and the corpus-wide figure: label mass-budget audit.
Salt portfolio · as filed
Which magnesium salts Kirkman uses
| Salt | Labels | Elemental fraction | Compound needed per 100 mg |
|---|---|---|---|
| glycinate | 2 | 11.83–14.1% | 709–845 mg |
| citrate | 1 | 11.3–16.16% | 619–885 mg |
| malate | 1 | 13.2–15.54% | 644–758 mg |
Composition across the portfolio · as filed
What Kirkman puts in the capsule besides magnesium
- 1 of 4 label lists magnesium stearate. Stearate is 4.1% magnesium by mass and that magnesium is not on the Supplement Facts line; the amount of stearate is not declared, so it cannot be quantified.
- 3 labels use a cellulose-based shell.
Label declarations · as filed
What Kirkman claims on its labels
Filed declarations across this brand's labels: 5 distinct filed entries across 4 NIH DSLD labels, counted 2026-09-13; these are manufacturer statements.
- Adult (18 - 50 Years) — on 4 of 4 labels
- Gluten Free — on 4 of 4 labels
- Dairy Free — on 4 of 4 labels
- No Allergies — on 1 of 4 labels
- Sugar Free — on 1 of 4 labels
What is not known · as of 2026-09-13
Gaps in the record for Kirkman
- 4 of 4 labels have no US retail listing matched as of 2026-09-13. That is a matching gap on our side, not evidence of unavailability.
Labels 4
| Magnesium Citrate Soluble PowderNIH DSLD · Label 333049 · Powder | form not mapped yet | 200 mg | 90 | 18.00 g | Not tracked yet |
| Magnesium GlycinateNIH DSLD · Label 296957 · Capsule | form not mapped yet | 100 mg | 90 | 9.00 g | Not tracked yet |
| Magnesium Glycinate Bio-Max SeriesNIH DSLD · Label 24654 · Capsule | glycinate | 100 mg | 100 | 10.00 g | Not tracked yet |
| Magnesium MalateNIH DSLD · Label 297224 · Capsule | form not mapped yet | 160 mg | 120 | 19.20 g | Not tracked yet |
Forms filed
Compare within a form
See all brands, all labels, or the priced form tables.
Filed composition facets
6 published excipient facets occur across 4 labels from Kirkman in the NIH DSLD records, counted 2026-09-13.
- citric acid: 2 of 4 labels.
- hypromellose: 2 of 4 labels.
- l-leucine: 2 of 4 labels.
- water: 2 of 4 labels.
- magnesium stearate: 1 of 4 labels.
- xylitol: 1 of 4 labels.
FDA recall records for this firm
The FDA enforcement database holds 13 recall records naming Kirkman (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 |
|---|---|---|---|---|---|
| 2024-05-15 | Class III | Kirkman brand 5-MTHF Methyltetrahydrofolate 1mg capsule dietary supplement, Folate 1667mcg DFE, 5000mcg Folic Acid, 120 capsules per package, UPC 8 12325 02354 7. Manufactured exclusively by: Kirkman, Lake Oswego, OR 9703, Recalling firm: HTO Nevada Inc DBA Kirkman. Description does not name a magnesium product. | Labeling error. The 5-MTHF 1mg label incorrectly declares 5000mcg Folic Acid instead 1000mcg Folic Acid per serving in the Supplement Facts, but correctly declares Folate 1667mcg DFE. The front label correctly declares product as 5-MTHF Methyltetrahydrofolate 1mg (or 1000mcg). | Terminated | F-1222-2024 |
| 2014-01-08 | Class II | Phenol Assist, Kirkman brand, Item # 0835-090 Recalling firm: Kirkman Group Inc.. Description does not name a magnesium product. | Firm is recalling dietary supplements containing a raw material which may contain >0.3 ppb chloramphenicol | Terminated | F-1352-2014 |
| 2014-01-08 | Class II | EnZym-Complete/DPP-IV II with Isogest, Kirkman brand. Item numbers: 0851A-090, 0851A-180, 0931-090, 0931-180, 5851A-090, 5931-090. Recalling firm: Kirkman Group Inc.. Description does not name a magnesium product. | Firm is recalling dietary supplements containing a raw material which may contain >0.3 ppb chloramphenicol | Terminated | F-1349-2014 |
| 2014-01-08 | Class II | Enzym-Complete/DPP-IV, Kirkman brand. Item numbers 0234-060, 0234-120, 0234-200, 5234-200 Recalling firm: Kirkman Group Inc.. Description does not name a magnesium product. | Firm is recalling dietary supplements containing a raw material which may contain >0.3 ppb chloramphenicol | Terminated | F-1350-2014 |
| 2014-01-08 | Class II | Biofilm Defense, Kirkman brand, Item # 0881-060 and 5881-060 Biofilm Defense, Pure Compounding brand, Item # 1881-060. Recalling firm: Kirkman Group Inc.. Description does not name a magnesium product. | Firm is recalling dietary supplements containing a raw material which may contain >0.3 ppb chloramphenicol | Terminated | F-1353-2014 |
| 2014-01-08 | Class II | Maximum Spectrum EnZym-Complete/DPP-IV Fruit Free w/Isogest, Kirkman brand, Item # 0869A-120 and 0932-120. Recalling firm: Kirkman Group Inc.. Description does not name a magnesium product. | Firm is recalling dietary supplements containing a raw material which may contain >0.3 ppb chloramphenicol | Terminated | F-1351-2014 |
| 2014-01-08 | Class II | Chewable EnZym-Complete/DPPIV with Isogest, Kirkman brand. Item # 0934-090. Recalling firm: Kirkman Group Inc.. Description does not name a magnesium product. | Firm is recalling dietary supplements containing a raw material which may contain >0.3 ppb chloramphenicol | Terminated | F-1347-2014 |
| 2013-12-25 | Class II | Dietary Supplement Formula ID B859; Packaged in the following configuration: B859 Kirkman Enz Comp DPP-IV, packaged in unlabeled, 90-count bottles (SKU 54112); Recalling firm: National Enzyme Co. Description does not name a magnesium product. | Firm is recalling dietary supplements containing a raw material which may contain >0.3 ppb chloramphenicol | Terminated | F-0790-2014 |
| 2013-12-25 | Class II | 8532 Kirkman MaxEnzComp w/DP packaged in unlabeled 120-capsule bottles (SKU 53854) Recalling firm: National Enzyme Co. Description does not name a magnesium product. | Firm is recalling dietary supplements containing a raw material which may contain >0.3 ppb chloramphenicol | Terminated | F-0757-2014 |
| 2013-12-25 | Class II | 9326 Kirkman Bacterial Bio 6, packaged in unlabeled 60-capsule bottles (SKU 53666); Recalling firm: National Enzyme Co. Description does not name a magnesium product. | Firm is recalling dietary supplements containing a raw material which may contain >0.3 ppb chloramphenicol | Terminated | F-0762-2014 |
| 2013-12-25 | Class II | Dietary Supplement packaged in the following configurations: (1) KIRKMAN, Enzym-Complete / DPP-IV, Broad Spectrum Digestion Formula with Dipeptidyl Peptidase IV Analog, packaged in 60-capsule bottles (SKU 52587), 120-capsule bottles (SKU 52588), and 200-capsule bottles (SKU 53853). Manufactured exclusively for KIRKMAN, Lake Oswego, OR; (2) KIRKMAN, EnZym-Complete / DPP-IV, GF/CF Enzyme Dietary Supplement, packaged in 200-capsule bottles (SKU 54956). Manufactured exclusively for KIRKMAN, Lake Oswego, OR; Recalling firm: National Enzyme Co. Description does not name a magnesium product. | Firm is recalling dietary supplements containing a raw material which may contain >0.3 ppb chloramphenicol | Terminated | F-0747-2014 |
| 2013-12-25 | Class II | B911 Kirkman Max Spectrum E, packaged unlabeled, 90-capsule bottles (SKU 54255); Recalling firm: National Enzyme Co. Description does not name a magnesium product. | Firm is recalling dietary supplements containing a raw material which may contain >0.3 ppb chloramphenicol | Terminated | F-0792-2014 |
| 2013-12-25 | Class II | Dietary Supplement packaged in the following configurations: (1) KIRKMAN Phenol Assist, packaged in 90-capsule bottles (SKU 52640). Manufactured exclusively for Kirkman, Lake Oswego, OR.; (2) 6379 Kirk Phenol Assist UNL, packaged in 90-capsule unlabeled bottles (SKU 53855) Recalling firm: National Enzyme Co. Description does not name a magnesium product. | Firm is recalling dietary supplements containing a raw material which may contain >0.3 ppb chloramphenicol | Terminated | F-0751-2014 |
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 2 reports naming Kirkman 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.