Label arithmetic · NIH DSLD 241839

Double Wood Supplements Magnesium Malate 1500 mg

Double Wood Supplements Magnesium Malate 1500 mg declares 1500 mg of elemental magnesium per serving as malate, which would require 3,218–3,788 mg of the salt in each unit — more than the 1,100 mg a size 000 capsule holds; NIH DSLD 241839, label dated 2021-01-22, calculation 2026-09-13.

Mass budget · computed; capsule comparison · modelled

What the declared salt would weigh

Double Wood Supplements Magnesium Malate 1500 mg declares 1500 mg of elemental magnesium per serving in NIH DSLD 241839, requiring 9,652.51–11,363.64 mg of magnesium malate under the salt model calculated 2026-09-13.

Elemental-to-compound conversion for NIH DSLD 241839
StepValueEvidence
Declared elemental magnesium1500 mg per servingobserved · label 2021-01-22
Resolved saltMagnesium malate · label-rowcomputed · name resolved from filed text
Reference formulaMgC₄H₄O₅; 156.38 g/molcomputed · chemical reference
Elemental fraction13.2–15.54% by masscomputed
Why the fraction is a rangeanhydrous or dihydratemodelled · hydrate not specified
Compound mass per serving9,652.51–11,363.64 mg = 1500 mg ÷ elemental fractioncomputed
Compound mass per discrete unit3,217.5–3,787.88 mgcomputed

At powder density 0.6–0.8 g/mL, 3,218 mg of powder exceeds every standard capsule size — the largest, 000, holds about 1,100 mg.

If the declared salt were the sole source of magnesium here, each capsule would need 3,218 mg of powder, which no standard capsule holds. So the label does not establish malate as the only source. A blend with a denser salt or a non-standard capsule could reconcile it. This is a statement about the label's arithmetic, not about what is in the bottle.

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

Double Wood Supplements Magnesium Malate 1500 mg has 11 published fields below, traced to NIH DSLD 241839 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 identifier241839observed
Resolved saltMagnesium malatecomputed
Source of the resolved saltlabel-rowobserved
Elemental magnesium per serving (mg)1500observed
Servings per container140observed
Elemental magnesium per container (mg)210000computed
Compound mass per discrete unit3,217.5–3,787.88 mgcomputed
Capsule fill verdictexceeds-allmodelled
Required standard capsule sizeNo standard size fits as of 2026-09-13modelled
Label date2021-01-22observed
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

Double Wood Supplements Magnesium Malate 1500 mg retains 1 magnesium-related rows in NIH DSLD 241839, including 1 rows selected for the primary serving, from label 2021-01-22, examined 2026-09-13.

Filed amounts, salt names and serving order
Filed amountServing orderFiled salt / notesCalculation role
1500 mg1malate

Magnesium Malate Note: providing

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. This filed amount exceeds 1,000 mg per serving and is excluded from the existing form-level amount medians.

Package arithmetic · observed inputs, computed totals

What the package works out to

Double Wood Supplements Magnesium Malate 1500 mg works out to 46.67–140 days per package at the label's own serving and filed frequency of 1–3 servings per day, according to label 2021-01-22, calculated 2026-09-13.

Arithmetic using the label's own serving, not intake advice
Net contents as filed420 Capsule(s)
Discrete units in the package420
Serving size as filed3 Capsule(s)
Units per serving3
Servings per package140
Daily servings in the label instructions1–3
Days per package at the label's own serving46.67–140 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 · 9 observed prices in malate

A same-salt reference for this package

At the median cost per 100 mg observed across 9 malate labels ($0.1142), a package of this size (210,000 mg elemental in Double Wood Supplements Magnesium Malate 1500 mg) would correspond to $239.82, 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 malate · n = 9
Median observed cost per 100 mg$0.1142
Filed elemental magnesium per package210,000 mg
Benchmark package equivalent$239.82 = 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.

Composition · observed

Other ingredients in the filed record

Double Wood Supplements Magnesium Malate 1500 mg lists 2 other ingredients in NIH DSLD 241839, label dated 2021-01-22, examined 2026-09-13.

Other ingredients as filed
EntryIngredient
1Hypromellose
2Microcrystalline Cellulose

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

Double Wood Supplements Magnesium Malate 1500 mg has 3 target-group entries in NIH DSLD 241839, label dated 2021-01-22, examined 2026-09-13.

Manufacturer-filed target groups
EntryFiled group
1Adult (18 - 50 Years)
2Women (not pregnant or lactating)
3Gluten Free

Provenance · observed

Registry record, versions and scanned label

Double Wood Supplements Magnesium Malate 1500 mg is identified by 1 NIH DSLD record, 241839, according to the retained record examined 2026-09-13; the label date is 2021-01-22.

Source record for Double Wood Supplements Magnesium Malate 1500 mg
NIH DSLD labelNIH DSLD 241839
Registry snapshot2026-08-10
Label date2021-01-22
Physical stateCapsule
Barcode as filed8 59793 00751 8
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

Double Wood Supplements Magnesium Malate 1500 mg 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 241839 (barcode 8 59793 00751 8) as of 2026-09-13.
2A magnesium percent daily value is not present in the filed record 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.