Label arithmetic · NIH DSLD 295977
Source Naturals Magnesium Serene Tangerine & Fruit Medley
Source Naturals Magnesium Serene Tangerine & Fruit Medley declares 800 mg of elemental magnesium per 4.2–8.4 Gram(s) (1 to 2 rounded teaspoons); the magnesium salt is not named in the filed record, no US retail price has been matched; NIH DSLD 295977, label dated 2023-08-23, calculation 2026-09-13.
FDA recall records for Source Naturals: 6 · queried 2026-09-13; brand-string matches across products.
Label facts and derived measurements
The numbers for this label
Source Naturals Magnesium Serene Tangerine & Fruit Medley has 11 published fields below, traced to NIH DSLD 295977 and the 2026-08-10 registry snapshot, with calculations dated 2026-09-13.
| Field | Value | Evidence tier |
|---|---|---|
| NIH DSLD identifier | 295977 | observed |
| Resolved salt | Single salt unresolved as of 2026-09-13 | computed |
| Source of the resolved salt | Single salt unresolved as of 2026-09-13 | observed |
| Elemental magnesium per serving (mg) | 800 | observed |
| Servings per container | 59 | observed |
| Elemental magnesium per container (mg) | 47200 | computed |
| Compound mass per discrete unit | Discrete unit mass not computable as of 2026-09-13 | computed |
| Capsule fill verdict | Mass budget unavailable as of 2026-09-13 | modelled |
| Required standard capsule size | Capsule size not applicable or unresolved as of 2026-09-13 | modelled |
| Label date | 2023-08-23 | observed |
| Retail match confidence | unmatched | computed |
Observed means a value transcribed from a label or price observation. Computed means arithmetic or normalization of those inputs. Modelled means the result depends on a stated physical assumption, including capsule capacity. Evidence tiers and their limits.
Source transcription · observed
Magnesium lines as filed
Source Naturals Magnesium Serene Tangerine & Fruit Medley retains 1 magnesium-related rows in NIH DSLD 295977, including 1 rows selected for the primary serving, from label 2023-08-23, examined 2026-09-13.
| Filed amount | Serving order | Filed salt / notes | Calculation role |
|---|---|---|---|
| 800 mg | 1 | Salt not identified in this row as of 2026-09-13 | Selected primary serving |
The elemental amount comes from the selected magnesium line. A salt named under another nutrient does not make that nutrient's quantity an elemental magnesium value. Distinct unresolved primary amounts remain ambiguous; they are not added together.
Package arithmetic · observed inputs, computed totals
What the package works out to
Source Naturals Magnesium Serene Tangerine & Fruit Medley files 59 servings per package, with no complete daily-frequency range for computing days, according to label 2023-08-23, calculated 2026-09-13.
| Net contents as filed | 17.6 Ounce(s); 500 Gram(s) |
|---|---|
| Serving size as filed | 4.2–8.4 Gram(s) (1 to 2 rounded teaspoons) |
| Servings per package | 59 |
| Daily servings in the label instructions | Complete daily-frequency range not filed as of 2026-09-13 |
| Days per package at the label's own serving | Days not computable from filed frequency and serving count as of 2026-09-13 |
Days = filed servings per container ÷ filed servings per day. If the label gives a frequency range, the largest frequency gives the shortest duration. Cost per serving = observed item price ÷ filed servings; cost per label-day multiplies this by the filed frequency. This follows the label's own instructions; it is package arithmetic, not intake advice.
Percent daily value · observed and computed
The label's percent daily value, recomputed
Source Naturals Magnesium Serene Tangerine & Fruit Medley files 1 magnesium percent-daily-value entries in NIH DSLD 295977; the check below applies the group-specific references in 21 CFR 101.9 to its 800 mg primary serving, calculated 2026-09-13.
| Group as filed | Declared | Reference | Recomputed | Difference |
|---|---|---|---|---|
| Adults and children 4 or more years of age | 200% | 420 mg | 190% | 10 percentage points |
Percent daily value = declared elemental mg ÷ the group's reference mg × 100, rounded to an integer. The adult and age-four-plus reference is 420 mg. Historical labels can use earlier references; a difference does not establish a filing error. Full-record entries may cover multiple serving sizes, so this table identifies the primary-serving basis explicitly. Group references and interpretation.
Composition · observed
Other ingredients in the filed record
Source Naturals Magnesium Serene Tangerine & Fruit Medley lists 7 other ingredients in NIH DSLD 295977, label dated 2023-08-23, examined 2026-09-13.
| Entry | Ingredient |
|---|---|
| 1 | Citric Acid |
| 2 | natural Tangerine flavor |
| 3 | Sodium Bicarbonate |
| 4 | Sodium Carbonate |
| 5 | Strawberry |
| 6 | natural Peach flavor |
| 7 | Stevia leaf concentrate |
Capsule material: Not identified from the other-ingredient text as of 2026-09-13. The material classification follows the filed ingredient names; it is not a test of the shell.
Label declarations · observed
Target groups as filed
Source Naturals Magnesium Serene Tangerine & Fruit Medley has 5 target-group entries in NIH DSLD 295977, label dated 2023-08-23, examined 2026-09-13.
| Entry | Filed group |
|---|---|
| 1 | Vegetarian |
| 2 | Adult (18 - 50 Years) |
| 3 | Gluten Free |
| 4 | Dairy Free |
| 5 | Sugar Free |
Provenance · observed
Registry record, versions and scanned label
Source Naturals Magnesium Serene Tangerine & Fruit Medley is identified by 1 NIH DSLD record, 295977, according to the retained record examined 2026-09-13; the label date is 2023-08-23.
| NIH DSLD label | NIH DSLD 295977 |
|---|---|
| Registry snapshot | 2026-08-10 |
| Label date | 2023-08-23 |
| Physical state | Liquid |
| Barcode as filed | 0 21078 02209 1 |
| Source scan | Scanned label (NIH DSLD) |
| Calculation date | 2026-09-13 |
The barcode is retained as an identifier, not as proof of a retail match. A registry version count records the number held; it does not reveal what changed. The label date, registry snapshot and price-observation date describe different events.
Gaps in this record
What is not available for this label
Source Naturals Magnesium Serene Tangerine & Fruit Medley has 2 unresolved data gaps in the retained NIH DSLD and price records as of 2026-09-13.
| Entry | Known gap |
|---|---|
| 1 | No confirmed US retail price matched to NIH DSLD 295977 (barcode 0 21078 02209 1) as of 2026-09-13. |
| 2 | A single salt with a defined elemental fraction is unresolved; compound mass cannot be computed as of 2026-09-13. |
An unmatched retail price describes our matching coverage. It does not establish that a product is unavailable. The elemental cost calculator can apply the same EC100 formula to a price you supply.