Brand · NIH DSLD snapshot 2026-08-10
Rainbow Light magnesium supplements: 2 products, 321 mg of magnesium per serving
2 Rainbow Light magnesium products: Magnesium Calcium+, 321 mg per tablet, and Magnesium Calcium+, 321 mg per tablet. Prices inside.
Rainbow Light files 2 on-market magnesium labels in NIH DSLD using no salt named in the filed records; no capsule label names one salt and one amount that can be checked against capsule sizes. Median declared amount 321 mg per serving; 0 of 2 labels have a matched US price as of 2026-11-02. 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 Rainbow Light 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 | Rainbow Light | 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 Rainbow Light's prices compare within each salt?
No Rainbow Light label has a matched US retail price in our price collection as of 2026-11-02, against 2 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 Rainbow Light?
The FDA enforcement data queried 2026-10-19 holds 0 recall records naming Rainbow Light, 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 Rainbow Light's labels, and what do they declare?
0 of 2 Rainbow Light labels list magnesium stearate, 0 use a gelatin shell and 2 a cellulose shell; 5 distinct filed declarations appear across them. Listed ingredients are filed names, not quantities.
measured| Filed entry | Labels |
|---|---|
| croscarmellose sodium | 2 of 2 |
| microcrystalline cellulose | 2 of 2 |
| stearic acid | 2 of 2 |
| Vegetarian | 2 of 2 |
| Adult (18 - 50 Years) | 2 of 2 |
| Gluten Free | 2 of 2 |
| Dairy Free | 2 of 2 |
| Sugar Free | 2 of 2 |
Source · NIH DSLD labels · snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
Which Rainbow Light labels are on file, and what does each declare?
Rainbow Light has 2 on-market labels in the NIH DSLD snapshot 2026-08-10, with a median declared amount of 321 mg of elemental magnesium per serving; each row opens the label's own arithmetic.
measured| Label | Declared per serving | Salt | Capsule verdict |
|---|---|---|---|
| Rainbow Light Magnesium Calcium+ | 321 mg | not resolved | not computable |
| Rainbow Light Magnesium Calcium+ | 321 mg | not resolved | not computable |
Source · NIH DSLD labels · snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method