Label arithmetic · NIH DSLD 25020

Metabolic Maintenance Magnesium Citrate

Metabolic Maintenance Magnesium Citrate declares 167 mg of elemental magnesium as citrate, which needs 1,033–1,478 mg of salt per unit — a size 000 capsule or larger; NIH DSLD 25020, label dated 2013-08-23, calculation 2026-09-13.

Mass budget · computed; capsule comparison · modelled

What the declared salt would weigh

Metabolic Maintenance Magnesium Citrate declares 167 mg of elemental magnesium per serving in NIH DSLD 25020, requiring 1,033.42–1,477.88 mg of magnesium citrate under the salt model calculated 2026-09-13.

Elemental-to-compound conversion for NIH DSLD 25020
StepValueEvidence
Declared elemental magnesium167 mg per servingobserved · label 2013-08-23
Resolved saltMagnesium citrate · label-rowcomputed · name resolved from filed text
Reference formulaMg₃(C₆H₅O₇)₂; 451.11 g/molcomputed · chemical reference
Elemental fraction11.3–16.16% by masscomputed
Why the fraction is a rangetrimagnesium dicitrate 16.2%; dibasic and hydrated forms as low as 11.3%modelled · hydrate not specified
Compound mass per serving1,033.42–1,477.88 mg = 167 mg ÷ elemental fractioncomputed
Compound mass per discrete unit1,033.42–1,477.88 mgcomputed

At powder density 0.6–0.8 g/mL, 1,033 mg of powder requires the largest standard size, 000 (holds about 1,100 mg).

The verdict uses the most favourable reading for the product — the smallest compound mass the label allows. It excludes the shell and other ingredients; their unreported masses are not added as guesses.

Size 0 holds about 545 mg, size 00 about 730 mg, and size 000 about 1,100 mg at powder density 0.6–0.8 g/mL. These are model inputs, not measurements of this product's capsule. Read the mass-budget method.

Label facts and derived measurements

The numbers for this label

Metabolic Maintenance Magnesium Citrate has 11 published fields below, traced to NIH DSLD 25020 and the 2026-08-10 registry snapshot, with calculations dated 2026-09-13.

Values published in this page's Product metadata
FieldValueEvidence tier
NIH DSLD identifier25020observed
Resolved saltMagnesium citratecomputed
Source of the resolved saltlabel-rowobserved
Elemental magnesium per serving (mg)167observed
Servings per containerServings not filed as of 2026-09-13observed
Elemental magnesium per container (mg)Container magnesium not computable as of 2026-09-13computed
Compound mass per discrete unit1,033.42–1,477.88 mgcomputed
Capsule fill verdictneeds-000modelled
Required standard capsule size000modelled
Label date2013-08-23observed
Retail match confidenceunmatchedcomputed

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

Metabolic Maintenance Magnesium Citrate retains 1 magnesium-related rows in NIH DSLD 25020, including 1 rows selected for the primary serving, from label 2013-08-23, examined 2026-09-13.

Filed amounts, salt names and serving order
Filed amountServing orderFiled salt / notesCalculation role
167 mg1citrate

Magnesium (Form: as Magnesium Citrate)

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

Metabolic Maintenance Magnesium Citrate has no filed serving count for package arithmetic in NIH DSLD 25020, according to label 2013-08-23, calculated 2026-09-13.

Arithmetic using the label's own serving, not intake advice
Net contents as filed120 Capsule(s)
Discrete units in the package120
Serving size as filed1 Capsule(s)
Units per serving1
Servings per packageServings not filed as of 2026-09-13
Daily servings in the label instructions1
Days per package at the label's own servingDays 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

Metabolic Maintenance Magnesium Citrate files 1 magnesium percent-daily-value entries in NIH DSLD 25020; the check below applies the group-specific references in 21 CFR 101.9 to its 167 mg primary serving, calculated 2026-09-13.

Declared values and current-reference arithmetic
Group as filedDeclaredReferenceRecomputedDifference
Adults and children 4 or more years of age42%420 mg40%2 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

Metabolic Maintenance Magnesium Citrate lists 1 other ingredients in NIH DSLD 25020, label dated 2013-08-23, examined 2026-09-13.

Other ingredients as filed
EntryIngredient
1vegetarian capsule

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

Metabolic Maintenance Magnesium Citrate has 1 target-group entries in NIH DSLD 25020, label dated 2013-08-23, examined 2026-09-13.

Manufacturer-filed target groups
EntryFiled group
1Adult (18 - 50 Years)

Provenance · observed

Registry record, versions and scanned label

The registry holds 1 versions of this label for Metabolic Maintenance Magnesium Citrate, according to the retained record examined 2026-09-13; the label date is 2013-08-23.

Source record for Metabolic Maintenance Magnesium Citrate
NIH DSLD labelNIH DSLD 25020
Registry snapshot2026-08-10
Label date2013-08-23
Physical stateCapsule
Barcode as filed8 38287 00428 8
Versions held by the registry1; version details are not available in this enrichment record as of 2026-09-13
Calculation date2026-09-13

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

Metabolic Maintenance Magnesium Citrate has 2 unresolved data gaps in the retained NIH DSLD and price records as of 2026-09-13.

Dated missing-data statements
EntryKnown gap
1No confirmed US retail price matched to NIH DSLD 25020 (barcode 8 38287 00428 8) as of 2026-09-13.
2Servings per container are not filed; container magnesium and package duration 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.