Label arithmetic · NIH DSLD 26912

Douglas Laboratories Magnesium Glycinate Forte

Douglas Laboratories Magnesium Glycinate Forte declares 100 mg of elemental magnesium as glycinate, which needs 355–423 mg of salt per unit and fits a standard size 0 capsule; NIH DSLD 26912, label dated 2013-10-25, calculation 2026-09-13.

FDA recall records for Douglas Laboratories: 1 · queried 2026-09-13; brand-string matches across products.

Mass budget · computed; capsule comparison · modelled

What the declared salt would weigh

Douglas Laboratories Magnesium Glycinate Forte declares 100 mg of elemental magnesium per serving in NIH DSLD 26912, requiring 709.22–845.31 mg of magnesium glycinate under the salt model calculated 2026-09-13.

Elemental-to-compound conversion for NIH DSLD 26912
StepValueEvidence
Declared elemental magnesium100 mg per servingobserved · label 2013-10-25
Resolved saltMagnesium glycinate · label-rowcomputed · name resolved from filed text
Reference formulaMg(C₂H₄NO₂)₂; 172.42 g/molcomputed · chemical reference
Elemental fraction11.83–14.1% by masscomputed
Why the fraction is a rangebisglycinate; chelate hydration varies by suppliermodelled · hydrate not specified
Compound mass per serving709.22–845.31 mg = 100 mg ÷ elemental fractioncomputed
Compound mass per discrete unit354.61–422.65 mgcomputed

At powder density 0.6–0.8 g/mL, 355 mg of powder fits a size 0 capsule (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

Douglas Laboratories Magnesium Glycinate Forte has 11 published fields below, traced to NIH DSLD 26912 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 identifier26912observed
Resolved saltMagnesium glycinatecomputed
Source of the resolved saltlabel-rowobserved
Elemental magnesium per serving (mg)100observed
Servings per container30observed
Elemental magnesium per container (mg)3000computed
Compound mass per discrete unit354.61–422.65 mgcomputed
Capsule fill verdictfits-0modelled
Required standard capsule size0modelled
Label date2013-10-25observed
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

Douglas Laboratories Magnesium Glycinate Forte retains 1 magnesium-related rows in NIH DSLD 26912, including 1 rows selected for the primary serving, from label 2013-10-25, examined 2026-09-13.

Filed amounts, salt names and serving order
Filed amountServing orderFiled salt / notesCalculation role
100 mg1glycinate

Magnesium (Form: from Magnesium Glycinate)

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

Douglas Laboratories Magnesium Glycinate Forte works out to 30 days per package at the label's own serving and filed frequency of 1 servings per day, according to label 2013-10-25, calculated 2026-09-13.

Arithmetic using the label's own serving, not intake advice
Net contents as filed60 Capsule(s)
Discrete units in the package60
Serving size as filed2 Capsule(s)
Units per serving2
Servings per package30
Daily servings in the label instructions1
Days per package at the label's own serving30 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.

Benchmark · 20 observed prices in glycinate

A same-salt reference for this package

At the median cost per 100 mg observed across 20 glycinate labels ($0.1264), a package of this size (3,000 mg elemental in Douglas Laboratories Magnesium Glycinate Forte) would correspond to $3.79, using observations from 2026-08-10 to 2026-09-11, calculated 2026-09-13. This is a benchmark, not a retailer quote.

Same-salt benchmark working
Salt and number of observationsMagnesium glycinate · n = 20
Median observed cost per 100 mg$0.1264
Filed elemental magnesium per package3,000 mg
Benchmark package equivalent$3.79 = median EC100 × package elemental mg ÷ 100
Evidence tierbenchmark · calculated 2026-09-13

The median is the middle sorted observation, or the average of the two middle observations for an even group. Each label contributes one observation. This value is neither an offer nor an estimate of a specific retailer's current price.

Percent daily value · observed and computed

The label's percent daily value, recomputed

Douglas Laboratories Magnesium Glycinate Forte files 1 magnesium percent-daily-value entries in NIH DSLD 26912; the check below applies the group-specific references in 21 CFR 101.9 to its 100 mg primary serving, calculated 2026-09-13.

Declared values and current-reference arithmetic
Group as filedDeclaredReferenceRecomputedDifference
Adults and children 4 or more years of age25%420 mg24%1 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

Douglas Laboratories Magnesium Glycinate Forte lists 3 other ingredients in NIH DSLD 26912, label dated 2013-10-25, examined 2026-09-13.

Other ingredients as filed
EntryIngredient
1Cellulose
2Gelatin
3Vegetable Stearate

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

Label declarations · observed

Target groups as filed

Douglas Laboratories Magnesium Glycinate Forte has 4 target-group entries in NIH DSLD 26912, label dated 2013-10-25, examined 2026-09-13.

Manufacturer-filed target groups
EntryFiled group
1Adult (18 - 50 Years)
2Gluten Free
3Dairy Free
4Sugar Free

Provenance · observed

Registry record, versions and scanned label

The registry holds 5 versions of this label for Douglas Laboratories Magnesium Glycinate Forte, according to the retained record examined 2026-09-13; the label date is 2013-10-25.

Source record for Douglas Laboratories Magnesium Glycinate Forte
NIH DSLD labelNIH DSLD 26912
Registry snapshot2026-08-10
Label date2013-10-25
Physical stateCapsule
Barcode as filed3 10539 01747 0
Versions held by the registry5; 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

Douglas Laboratories Magnesium Glycinate Forte 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 26912 (barcode 3 10539 01747 0) 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.