Brand · NIH DSLD snapshot 2026-08-10
DC magnesium supplements: 12 products in 4 forms, 133–500 mg of magnesium per serving
12 DC magnesium products in 4 forms, led by oxide (6); median 221 mg of magnesium per serving. Inside: each product's mg and price.
DC files 12 on-market magnesium labels in NIH DSLD using 2 salts, most often oxide (5 of 12); 0 of 2 audited capsule labels are above the assumed size 000 capacity at powder density 0.8 g/mL, against 8 of 137 across the registry. Median declared amount 221 mg per serving; 0 of 12 labels have a matched US price as of 2026-11-02. Snapshot 2026-08-10.
computed from filed labels
Chart data
| Displayed chart text |
|---|
| oxide |
| 5 |
| aspartate |
| 2 |
Data release 2026-08-10-f441aa9f · registry snapshot 2026-08-10 · latest price observation 2026-11-02 · chemistry 2026-10-17
Elemental: The magnesium itself; the rest of the compound weight is the partner molecule.
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.
Estimated salt mass versus assumed capsule capacity
0 of 2 audited capsule labels are above the assumed size 000 capacity at powder density 0.8 g/mL, against 8 of 137 across the registry. 2 fit size 0 or 00 and 0 need size 000, at powder density 0.8 g/mL, the top of the usual 0.6–0.8 range and the most favourable hydration.
computed with assumption
Chart data
| Displayed chart text |
|---|
| DC |
| fits 2 of 2 |
| needs 000 0 of 2 |
| exceeds 0 of 2 |
| all audited |
| fits 82 of 137 |
| needs 000 47 of 137 |
| exceeds 8 of 137 |
| Verdict | DC | All audited capsule labels |
|---|---|---|
| Fits size 0 or 00 | 2 of 2 | 82 of 137 |
| Needs size 000 | 0 of 2 | 47 of 137 |
| Exceeds size 000 | 0 of 2 | 8 of 137 |
Source · NIH DSLD labels; mass balance · recognized salt only; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
Which magnesium salts does DC use, and how much compound does each need?
DC files 2 salts, most often oxide (5 of 12) across 12 labels; for 100 mg of magnesium the lightest of them needs 166 mg of compound against 1,335 mg for the heaviest.
computed| Salt | Labels | Elemental fraction | Compound per 100 mg Mg |
|---|---|---|---|
| oxide | 5 | 60.3% | 166 mg |
| aspartate | 2 | 7.5–15.6% | 639–1,335 mg |
Source · NIH DSLD labels · snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
How do DC's prices compare within each salt?
No DC label has a matched US retail price in our price collection as of 2026-11-02, against 12 labels on file.
computed| Label | Salt | Per 100 mg | Same-salt median | Observed |
|---|---|---|---|---|
| No matched price as of 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
Does the FDA hold recall or adverse event records naming DC?
The FDA enforcement data queried 2026-10-19 holds 0 recall records naming DC, 0 of them about a magnesium product. CAERS holds adverse event reports naming the brand, as it does for 143 of 273 brands here; 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 record as of 2026-10-19 |
FDA record register and matching method
Source · openFDA enforcement and CAERS · queried 2026-10-19 · release 2026-08-10-f441aa9f · CSV · method
What else goes into DC's labels, and what do they declare?
12 of 12 DC labels list magnesium stearate, 2 use a gelatin shell and 10 a cellulose shell; 4 distinct filed declarations appear across them. Listed ingredients are filed names, not quantities.
measured| Filed entry | Labels |
|---|---|
| magnesium stearate | 12 of 12 |
| cellulose | 8 of 12 |
| silicon dioxide | 8 of 12 |
| stearic acid | 7 of 12 |
| citric acid | 4 of 12 |
| l-glycine | 4 of 12 |
| calcium carbonate | 3 of 12 |
| gelatin | 2 of 12 |
4 additional rows
| Filed entry | Labels |
|---|---|
| Adult (18 - 50 Years) | 12 of 12 |
| Gluten Free | 11 of 12 |
| Women (not pregnant or lactating) | 7 of 12 |
| Kosher | 2 of 12 |
Source · NIH DSLD labels · snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
Which DC labels are on file, and what does each declare?
DC has 12 on-market labels in the NIH DSLD snapshot 2026-08-10, with a median declared amount of 221 mg of elemental magnesium per serving; each row opens the label's own arithmetic.
measured| Label | Declared per serving | Salt | Capsule verdict |
|---|---|---|---|
| DC Magnesium | 133 mg | not resolved | not computable |
| DC Magnesium | 133 mg | not resolved | not computable |
| DC Magnesium | 133 mg | not resolved | not computable |
| DC Magnesium | 133 mg | not resolved | not computable |
| DC Magnesium & Potassium Aspartate | 200 mg | aspartate | needs 00 |
| DC Magnesium & Potassium Aspartate | 200 mg | aspartate | needs 00 |
| DC Magnesium 500 mg | 500 mg | oxide | not applicable |
| DC Magnesium 500 mg | 500 mg | not resolved | not computable |
4 additional rows
| Label | Declared per serving | Salt | Capsule verdict |
|---|---|---|---|
| DC Magnesium 500 mg | 500 mg | oxide | not applicable |
| DC Magnesium 500 mg | 500 mg | oxide | not applicable |
| DC Magnesium Oxide 400 mg | 241 mg | oxide | not applicable |
| DC Magnesium Oxide 400 mg | 241 mg | oxide | not applicable |
Source · NIH DSLD labels · snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
Does DC share a filed formulation with other brands?
1 filed formulation of DC also appears under other brands, matched by ingredients, shell, units and rounded amount; within one salt their observed prices differ by up to ×1.0.
computed| Formulation | Labels | Brands |
|---|---|---|
| 135 mg × 1 · l-glycine, silica, vegetable cellulose… | 3 | 2 |
Source · NIH DSLD labels · snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method