Label arithmetic · NIH DSLD 184671
Pure Encapsulations Magnesium (Citrate/Malate)
Pure Encapsulations Magnesium (Citrate/Malate) was observed at $20.50 on 2026-09-07, which is $0.19 per 100 mg of elemental magnesium; NIH DSLD 184671, label dated 2019-01-07, calculation 2026-09-13.
FDA recall records for Pure Encapsulations: 2 · queried 2026-09-13; brand-string matches across products.
Label facts and derived measurements
The numbers for this label
Pure Encapsulations Magnesium (Citrate/Malate) has 14 published fields below, traced to NIH DSLD 184671 and the 2026-08-10 registry snapshot, with calculations dated 2026-09-13.
| Field | Value | Evidence tier |
|---|---|---|
| NIH DSLD identifier | 184671 | 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) | 120 | observed |
| Servings per container | 90 | observed |
| Elemental magnesium per container (mg) | 10800 | 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 | 2019-01-07 | observed |
| Retail match confidence | legacy-verified | computed |
| Observed container price (USD) | 20.5 | observed |
| Price observation date | 2026-09-07 | observed |
| Cost per 100 mg elemental (USD) | 0.1898 | 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
Pure Encapsulations Magnesium (Citrate/Malate) retains 1 magnesium-related rows in NIH DSLD 184671, including 1 rows selected for the primary serving, from label 2019-01-07, examined 2026-09-13.
| Filed amount | Serving order | Filed salt / notes | Calculation role |
|---|---|---|---|
| 120 mg | 1 | citrate, malate Magnesium (Form: as Magnesium Citrate, Magnesium Malate) | 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.
Within one salt · computed from observed prices
Cost per 100 mg within citrate
Pure Encapsulations Magnesium (Citrate/Malate)'s $0.1898 per 100 mg of elemental magnesium is at percentile 95 among 19 citrate labels with observed prices, using confirmed gold-set matches observed 2026-08-10 to 2026-09-11, calculated 2026-09-13.
| Observed item price · Amazon | $20.50 on 2026-09-07 |
|---|---|
| Cost per 100 mg elemental | $0.1898 |
| Observed prices in citrate | 19 confirmed matches |
| Percentile | 95 |
| Match confidence | legacy-verified |
Percentile = 100 × the number of prices at or below this EC100 ÷ the number of observed prices in this salt, rounded to an integer. Ties receive the same percentile. The comparison includes this label; a high percentile means higher observed cost. Price is the dated item observation, excluding tax, shipping, coupons and subscriptions.
Package arithmetic · observed inputs, computed totals
What the package works out to
Pure Encapsulations Magnesium (Citrate/Malate) works out to 90 days per package at the label's own serving and filed frequency of 1 servings per day, according to label 2019-01-07, calculated 2026-09-13.
| Net contents as filed | 90 Capsule(s) |
|---|---|
| Discrete units in the package | 90 |
| Serving size as filed | 1–4 Capsule(s) |
| Units per serving | 1–4 |
| Servings per package | 90 |
| Daily servings in the label instructions | 1 |
| Days per package at the label's own serving | 90 days |
| Price per serving | $0.2278 · computed from price observed 2026-09-07 |
| Price per day at the label's own serving | $0.2278 · computed from price observed 2026-09-07 |
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
Pure Encapsulations Magnesium (Citrate/Malate) files 1 magnesium percent-daily-value entries in NIH DSLD 184671; the check below applies the group-specific references in 21 CFR 101.9 to its 120 mg primary serving, calculated 2026-09-13.
| Group as filed | Declared | Reference | Recomputed | Difference |
|---|---|---|---|---|
| Adults and children 4 or more years of age | 29% | 420 mg | 29% | 0 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
Pure Encapsulations Magnesium (Citrate/Malate) lists 2 other ingredients in NIH DSLD 184671, label dated 2019-01-07, examined 2026-09-13.
| Entry | Ingredient |
|---|---|
| 1 | Vegetarian Capsule |
| 2 | Ascorbyl Palmitate |
Capsule material: vegetarian. The material classification follows the filed ingredient names; it is not a test of the shell.
Label declarations · observed
Target groups as filed
Pure Encapsulations Magnesium (Citrate/Malate) has 2 target-group entries in NIH DSLD 184671, label dated 2019-01-07, examined 2026-09-13.
| Entry | Filed group |
|---|---|
| 1 | Adult (18 - 50 Years) |
| 2 | Gluten Free |
Provenance · observed
Registry record, versions and scanned label
The registry holds 10 versions of this label for Pure Encapsulations Magnesium (Citrate/Malate), according to the retained record examined 2026-09-13; the label date is 2019-01-07.
| NIH DSLD label | NIH DSLD 184671 |
|---|---|
| Registry snapshot | 2026-08-10 |
| Label date | 2019-01-07 |
| Physical state | Capsule |
| Barcode as filed | 7 66298 00435 8 |
| Versions held by the registry | 10; version details are not available in this enrichment record as of 2026-09-13 |
| 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
Pure Encapsulations Magnesium (Citrate/Malate) has 1 unresolved data gaps in the retained NIH DSLD and price records as of 2026-09-13.
| Entry | Known gap |
|---|---|
| 1 | 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.