Label arithmetic · NIH DSLD 55106
KAL Magnesium Citrate 160 mg Powder
KAL Magnesium Citrate 160 mg Powder was observed at $21.99 on 2026-08-10, which is $0.10 per 100 mg of elemental magnesium; NIH DSLD 55106, label dated 2016-01-25, calculation 2026-09-13.
Mass budget · computed; capsule comparison · modelled
What the declared salt would weigh
KAL Magnesium Citrate 160 mg Powder declares 160 mg of elemental magnesium per serving in NIH DSLD 55106, requiring 990.1–1,415.93 mg of magnesium citrate under the salt model calculated 2026-09-13.
| Step | Value | Evidence |
|---|---|---|
| Declared elemental magnesium | 160 mg per serving | observed · label 2016-01-25 |
| Resolved salt | Magnesium citrate · label-row | computed · name resolved from filed text |
| Reference formula | Mg₃(C₆H₅O₇)₂; 451.11 g/mol | computed · chemical reference |
| Elemental fraction | 11.3–16.16% by mass | computed |
| Why the fraction is a range | trimagnesium dicitrate 16.2%; dibasic and hydrated forms as low as 11.3% | modelled · hydrate not specified |
| Compound mass per serving | 990.1–1,415.93 mg = 160 mg ÷ elemental fraction | computed |
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 Magnesium Citrate 160 mg Powder has 14 published fields below, traced to NIH DSLD 55106 and the 2026-08-10 registry snapshot, with calculations dated 2026-09-13.
| Field | Value | Evidence tier |
|---|---|---|
| NIH DSLD identifier | 55106 | observed |
| Resolved salt | Magnesium citrate | computed |
| Source of the resolved salt | label-row | observed |
| Elemental magnesium per serving (mg) | 160 | observed |
| Servings per container | 139 | observed |
| Elemental magnesium per container (mg) | 22240 | computed |
| Compound mass per discrete unit | Discrete unit mass not computable as of 2026-09-13 | computed |
| Capsule fill verdict | not-applicable | modelled |
| Required standard capsule size | Capsule size not applicable or unresolved as of 2026-09-13 | modelled |
| Label date | 2016-01-25 | observed |
| Retail match confidence | legacy-provisional | computed |
| Observed container price (USD) | 21.99 | observed |
| Price observation date | 2026-08-10 | observed |
| Cost per 100 mg elemental (USD) | 0.0989 | computed |
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 Magnesium Citrate 160 mg Powder retains 1 magnesium-related rows in NIH DSLD 55106, including 1 rows selected for the primary serving, from label 2016-01-25, examined 2026-09-13.
| Filed amount | Serving order | Filed salt / notes | Calculation role |
|---|---|---|---|
| 160 mg | 1 | citrate 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 Magnesium Citrate 160 mg Powder's $0.0989 per 100 mg of elemental magnesium is at percentile 47 among 19 citrate labels with observed prices, using confirmed gold-set matches observed 2026-08-10 to 2026-09-11, calculated 2026-09-13.
| Observed item price · Amazon | $21.99 on 2026-08-10 |
|---|---|
| Cost per 100 mg elemental | $0.0989 |
| Observed prices in citrate | 19 confirmed matches |
| Percentile | 47 |
| Match confidence | legacy-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 Magnesium Citrate 160 mg Powder works out to 139 days per package at the label's own serving and filed frequency of 1 servings per day, according to label 2016-01-25, calculated 2026-09-13.
| Net contents as filed | 8.32 oz.; 236 Gram(s) |
|---|---|
| Serving size as filed | 1.7 Gram(s) (1/2 heaping teaspoon) |
| Servings per package | 139 |
| Daily servings in the label instructions | 1 |
| Days per package at the label's own serving | 139 days |
| Price per serving | $0.1582 · computed from price observed 2026-08-10 |
| Price per day at the label's own serving | $0.1582 · 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 Magnesium Citrate 160 mg Powder files 2 magnesium percent-daily-value entries in NIH DSLD 55106; the check below applies the group-specific references in 21 CFR 101.9 to its 160 mg primary serving, calculated 2026-09-13.
| Group as filed | Declared | Reference | Recomputed | Difference |
|---|---|---|---|---|
| Adults and children 4 or more years of age | 40% | 420 mg | 38% | 2 percentage points |
| Children less than 4 years of age | 80% | Age group not resolved as of 2026-09-13 | Group reference not resolved as of 2026-09-13 | Comparison unavailable as of 2026-09-13 |
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 Magnesium Citrate 160 mg Powder lists 3 other ingredients in NIH DSLD 55106, label dated 2016-01-25, examined 2026-09-13.
| Entry | Ingredient |
|---|---|
| 1 | natural Orange flavor |
| 2 | Citric Acid |
| 3 | Stevia |
Capsule material: Not identified from the other-ingredient text as of 2026-09-13. The material classification follows the filed ingredient names; it is not a test of the shell.
Label declarations · observed
Target groups as filed
KAL Magnesium Citrate 160 mg Powder has 2 target-group entries in NIH DSLD 55106, label dated 2016-01-25, examined 2026-09-13.
| Entry | Filed group |
|---|---|
| 1 | Vegetarian |
| 2 | Children (All) |
Provenance · observed
Registry record, versions and scanned label
KAL Magnesium Citrate 160 mg Powder is identified by 1 NIH DSLD record, 55106, according to the retained record examined 2026-09-13; the label date is 2016-01-25.
| NIH DSLD label | NIH DSLD 55106 |
|---|---|
| Registry snapshot | 2026-08-10 |
| Label date | 2016-01-25 |
| Physical state | Powder |
| Barcode as filed | 0 21245 54360 2 |
| Calculation date | 2026-09-13 |
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.