Label arithmetic · NIH DSLD 308657

Swanson Magnesium Lactate 84 mg

Swanson Magnesium Lactate 84 mg declares 84 mg of elemental magnesium as lactate, which needs 699 mg of salt per unit — a size 00 capsule or larger; NIH DSLD 308657, label dated 2024-03-22, calculation 2026-09-13.

FDA recall records for Swanson: 6 · queried 2026-09-13; brand-string matches across products.

Mass budget · computed; capsule comparison · modelled

What the declared salt would weigh

Swanson Magnesium Lactate 84 mg declares 84 mg of elemental magnesium per serving in NIH DSLD 308657, requiring 699.42 mg of magnesium lactate under the salt model calculated 2026-09-13.

Elemental-to-compound conversion for NIH DSLD 308657
StepValueEvidence
Declared elemental magnesium84 mg per servingobserved · label 2024-03-22
Resolved saltMagnesium lactate · full-recordcomputed · name resolved from filed text
Reference formulaMg(C₃H₅O₃)₂; 202.45 g/molcomputed · chemical reference
Elemental fraction12.01% by masscomputed
Compound mass per serving699.42 mg = 84 mg ÷ elemental fractioncomputed
Compound mass per discrete unit699.42 mgcomputed

At powder density 0.6–0.8 g/mL, 699 mg of powder requires at least a size 00 capsule (a size 0 holds about 545 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

Swanson Magnesium Lactate 84 mg has 11 published fields below, traced to NIH DSLD 308657 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 identifier308657observed
Resolved saltMagnesium lactatecomputed
Source of the resolved saltfull-recordobserved
Elemental magnesium per serving (mg)84observed
Servings per container120observed
Elemental magnesium per container (mg)10080computed
Compound mass per discrete unit699.42 mgcomputed
Capsule fill verdictneeds-00modelled
Required standard capsule size00modelled
Label date2024-03-22observed
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

Swanson Magnesium Lactate 84 mg retains 1 magnesium-related rows in NIH DSLD 308657, including 1 rows selected for the primary serving, from label 2024-03-22, examined 2026-09-13.

Filed amounts, salt names and serving order
Filed amountServing orderFiled salt / notesCalculation role
84 mg1Salt not identified in this row as of 2026-09-13Selected 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

Swanson Magnesium Lactate 84 mg works out to 60 days per package at the label's own serving and filed frequency of 2 servings per day, according to label 2024-03-22, 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 package120
Daily servings in the label instructions2
Days per package at the label's own serving60 days

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

Swanson Magnesium Lactate 84 mg files 1 magnesium percent-daily-value entries in NIH DSLD 308657; the check below applies the group-specific references in 21 CFR 101.9 to its 84 mg primary serving, calculated 2026-09-13.

Declared values and current-reference arithmetic
Group as filedDeclaredReferenceRecomputedDifference
Adults and children 4 or more years of age20%420 mg20%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

Swanson Magnesium Lactate 84 mg lists 4 other ingredients in NIH DSLD 308657, label dated 2024-03-22, examined 2026-09-13.

Other ingredients as filed
EntryIngredient
1Gelatin
2Magnesium Stearate
3Microcrystalline Cellulose
4Medium Chain Triglyceride Oil

Capsule material: gelatin. The material classification follows the filed ingredient names; it is not a test of the shell.

This label lists magnesium stearate, whose reference elemental fraction is 4.1% by mass. No stearate quantity is available in this record as of 2026-09-13, so its magnesium contribution cannot be quantified or added to the Supplement Facts magnesium total.

Label declarations · observed

Target groups as filed

Swanson Magnesium Lactate 84 mg has 1 target-group entries in NIH DSLD 308657, label dated 2024-03-22, 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 2 versions of this label for Swanson Magnesium Lactate 84 mg, according to the retained record examined 2026-09-13; the label date is 2024-03-22.

Source record for Swanson Magnesium Lactate 84 mg
NIH DSLD labelNIH DSLD 308657
Registry snapshot2026-08-10
Label date2024-03-22
Physical stateCapsule
Barcode as filed0 87614 11525 2
Versions held by the registry2; version details are not available in this enrichment record as of 2026-09-13
Source scanScanned label (NIH DSLD)
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

Swanson Magnesium Lactate 84 mg has 1 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 308657 (barcode 0 87614 11525 2) 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.