Label arithmetic · NIH DSLD 253228

KAL Malic Acid 1500 mg with Magnesium

KAL Malic Acid 1500 mg with Magnesium was observed at $21.95 on 2026-08-10, which is $0.15 per 100 mg of elemental magnesium; NIH DSLD 253228, label dated 2021-09-24, calculation 2026-09-13.

Mass budget · computed; capsule comparison · modelled

What the declared salt would weigh

KAL Malic Acid 1500 mg with Magnesium declares 500 mg of elemental magnesium per serving in NIH DSLD 253228, requiring 3,094.06–4,424.78 mg of magnesium citrate under the salt model calculated 2026-09-13.

Elemental-to-compound conversion for NIH DSLD 253228
StepValueEvidence
Declared elemental magnesium500 mg per servingobserved · label 2021-09-24
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 serving3,094.06–4,424.78 mg = 500 mg ÷ elemental fractioncomputed
Compound mass per discrete unit773.51–1,106.19 mgcomputed

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

KAL Malic Acid 1500 mg with Magnesium has 14 published fields below, traced to NIH DSLD 253228 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 identifier253228observed
Resolved saltMagnesium citratecomputed
Source of the resolved saltlabel-rowobserved
Elemental magnesium per serving (mg)500observed
Servings per container30observed
Elemental magnesium per container (mg)15000computed
Compound mass per discrete unit773.51–1,106.19 mgcomputed
Capsule fill verdictnot-applicablemodelled
Required standard capsule sizeCapsule size not applicable or unresolved as of 2026-09-13modelled
Label date2021-09-24observed
Retail match confidencelegacy-provisionalcomputed
Observed container price (USD)21.95observed
Price observation date2026-08-10observed
Cost per 100 mg elemental (USD)0.1463computed

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

KAL Malic Acid 1500 mg with Magnesium retains 1 magnesium-related rows in NIH DSLD 253228, including 1 rows selected for the primary serving, from label 2021-09-24, examined 2026-09-13.

Filed amounts, salt names and serving order
Filed amountServing orderFiled salt / notesCalculation role
500 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.

Within one salt · computed from observed prices

Cost per 100 mg within citrate

KAL Malic Acid 1500 mg with Magnesium's $0.1463 per 100 mg of elemental magnesium is at percentile 84 among 19 citrate labels with observed prices, using confirmed gold-set matches observed 2026-08-10 to 2026-09-11, calculated 2026-09-13.

Price and comparison within citrate
Observed item price · Amazon$21.95 on 2026-08-10
Cost per 100 mg elemental$0.1463
Observed prices in citrate19 confirmed matches
Percentile84
Match confidencelegacy-provisional

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

KAL Malic Acid 1500 mg with Magnesium works out to 30 days per package at the label's own serving and filed frequency of 1 servings per day, according to label 2021-09-24, calculated 2026-09-13.

Arithmetic using the label's own serving, not intake advice
Net contents as filed120 Tablet(s)
Discrete units in the package120
Serving size as filed4 Tablet(s)
Units per serving4
Servings per package30
Daily servings in the label instructions1
Days per package at the label's own serving30 days
Price per serving$0.7317 · computed from price observed 2026-08-10
Price per day at the label's own serving$0.7317 · computed from price observed 2026-08-10

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

KAL Malic Acid 1500 mg with Magnesium files 1 magnesium percent-daily-value entries in NIH DSLD 253228; the check below applies the group-specific references in 21 CFR 101.9 to its 500 mg primary serving, calculated 2026-09-13.

Declared values and current-reference arithmetic
Group as filedDeclaredReferenceRecomputedDifference
Adults and children 4 or more years of age125%420 mg119%6 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

KAL Malic Acid 1500 mg with Magnesium lists 3 other ingredients in NIH DSLD 253228, label dated 2021-09-24, examined 2026-09-13.

Other ingredients as filed
EntryIngredient
1Cellulose
2Stearic Acid
3Silica

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

KAL Malic Acid 1500 mg with Magnesium has 1 target-group entries in NIH DSLD 253228, label dated 2021-09-24, examined 2026-09-13.

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

Provenance · observed

Registry record, versions and scanned label

KAL Malic Acid 1500 mg with Magnesium is identified by 1 NIH DSLD record, 253228, according to the retained record examined 2026-09-13; the label date is 2021-09-24.

Source record for KAL Malic Acid 1500 mg with Magnesium
NIH DSLD labelNIH DSLD 253228
Registry snapshot2026-08-10
Label date2021-09-24
Physical stateTablet or Pill
Barcode as filed0 21245 74590 7
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.