Brand · NIH DSLD snapshot 2026-08-10
Doctor's Best magnesium supplements: 1 product, 200 mg of magnesium per serving
1 Doctor's Best magnesium product, median 200 mg of magnesium per serving. Inside: each product's mg and price.
Doctor's Best files one on-market magnesium label in NIH DSLD, Doctor's Best CoQ10 L-Carnitine Magnesium, declaring 200 mg of elemental magnesium per serving; no capsule verdict is computable. Snapshot 2026-08-10.
computed from filed labelsData 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
No Doctor's Best capsule label has a single resolved salt and one declared amount as of 2026-08-10, so no capsule verdict is counted.
computed with assumption| Verdict | Doctor's Best | All audited capsule labels |
|---|---|---|
| Fits size 0 or 00 | no audited capsule label | 82 of 137 |
| Needs size 000 | no audited capsule label | 47 of 137 |
| Exceeds size 000 | no audited capsule label | 8 of 137 |
Source · NIH DSLD labels; mass balance · recognized salt only; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
How do Doctor's Best's prices compare within each salt?
1 of 1 Doctor's Best labels has a matched US price as of 2026-11-02; each is compared with the median of its own salt, never across salts, per 100 mg of declared elemental magnesium.
computed| Label | Salt | Per 100 mg | Same-salt median | Observed |
|---|---|---|---|---|
| Doctor's Best CoQ10 L-Carnitine Magnesium | glycinate | $0.3998 | $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
Does the FDA hold recall or adverse event records naming Doctor's Best?
The FDA enforcement data queried 2026-10-19 holds 0 recall records naming Doctor's Best, 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 Doctor's Best's labels, and what do they declare?
1 of 1 Doctor's Best labels list magnesium stearate, 0 use a gelatin shell and 1 a cellulose shell; 4 distinct filed declarations appear across them. Listed ingredients are filed names, not quantities.
measured| Filed entry | Labels |
|---|---|
| magnesium stearate | 1 of 1 |
| microcrystalline cellulose | 1 of 1 |
| silicon dioxide | 1 of 1 |
| Vegan | 1 of 1 |
| Vegetarian | 1 of 1 |
| Adult (18 - 50 Years) | 1 of 1 |
| Gluten Free | 1 of 1 |
Source · NIH DSLD labels · snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
Which Doctor's Best labels are on file, and what does each declare?
Doctor's Best has 1 on-market label in the NIH DSLD snapshot 2026-08-10, with a median declared amount of 200 mg of elemental magnesium per serving; each row opens the label's own arithmetic.
measured| Label | Declared per serving | Salt | Capsule verdict |
|---|---|---|---|
| Doctor's Best CoQ10 L-Carnitine Magnesium | 200 mg | not resolved | not computable |
Source · NIH DSLD labels · snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method