Label arithmetic · NIH DSLD 288306
Pharmax Magnesium Malate: 125 mg of magnesium per capsule, 1–4 capsules a day
125 mg of magnesium per capsule; the label's 1–4 capsules a day give 125–500 mg. No US price matched (Nov 2). Inside: salt weight, capsule size.
Pharmax Magnesium Malate declares 125 mg of elemental magnesium per serving as malate, which needs 804–990 mg of magnesium malate in each capsule, against 1,100 mg in the largest standard capsule (size 000) at powder density 0.8 g/mL, the top of the usual 0.6–0.8 range: it fits only that size. No US retail price matched as of 2026-11-02; 2 of the 20 malate labels in this registry have a matched price. NIH DSLD 288306, label dated 2023-06-22.
computed from the filed label
Chart data
| Displayed chart text |
|---|
| 545 mg |
| 730 mg |
| 1,100 mg |
| 804–990 mg of malate per capsule |
Data release 2026-08-10-f441aa9f · registry snapshot 2026-08-10 · latest price observation 2026-10-19 · chemistry 2026-10-17
Mass: 804–990 mg per capsule · Price: none matched · % DV: 30% vs 30%
Elemental: The magnesium itself; the rest of the compound weight is the partner molecule.
Compound: The whole salt, such as magnesium glycinate, that must physically fit in the capsule.
Size 000: The largest standard capsule, about 1,100 mg of powder at 0.8 g/mL, the top of the usual 0.6–0.8 range; size 00 holds about 730 mg and size 0 about 545 mg.
Recompute with your price
Enter the price you paid; the declared amount and servings of this label are prefilled, so the result is the cost per 100 mg of elemental magnesium for your bottle.
Same-salt comparison appears here.
Will 125 mg of malate actually fit in one capsule, or do I need more than one?
Estimated salt mass versus assumed capsule capacity: Pharmax Magnesium Malate implies 804–990 mg of magnesium malate in each capsule to deliver 125 mg of elemental magnesium, against 1,100 mg in the largest standard capsule (size 000) at powder density 0.8 g/mL, the top of the usual 0.6–0.8 range. Verdict: needs size 000, read at the most favourable hydration and the most units per serving.
computed with assumption| Measure | Value |
|---|---|
| Elemental magnesium per serving | 125 mg |
| Units per serving | 1 |
| Magnesium malate per serving | 804–990 mg |
| Magnesium malate per capsule | 804–990 mg |
| Capsule capacity 0 · 00 · 000 | 545 · 730 · 1,100 mg |
| Verdict | Needs size 000 |
The filed salt can have more than one hydration state (anhydrous 15.54% or dihydrate 12.63% (192.41 g/mol)), so the compound mass is a range.
Source · NIH DSLD 288306 · label 2023-06-22; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
How much elemental magnesium is actually in this label's filed magnesium lines?
Pharmax Magnesium Malate files 1 magnesium line in NIH DSLD 288306; the selected primary line declares 125 mg of elemental magnesium per serving, against 0 other rows excluded from the primary amount. A salt named under another nutrient does not turn that nutrient's quantity into elemental magnesium.
measured| Filed amount | Salt or note as filed | Role |
|---|---|---|
| 125 mg | Salt not named in this row; magnesium malate is taken from the label text | Primary serving |
Source · NIH DSLD 288306 · label 2023-06-22; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
Does this label's malate claim hold up, or could the magnesium come from another source?
The label names one magnesium form, malate, resolved from the full NIH DSLD record text; at that salt the declaration is within the assumed size 000 capacity at powder density 0.8 g/mL, compared with oxide, the salt richest in magnesium at 60.3%.
computed with assumption| Form named on the label | Elemental fraction | Source |
|---|---|---|
| Magnesium malate | 12.6–15.5% | full NIH DSLD record text |
Source · NIH DSLD 288306 · label 2023-06-22; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
Is this a good price for the elemental magnesium I'm actually getting?
No US retail price is matched to this label as of 2026-11-02; 2 of 20 malate labels have one, against a median of $0.1052 per 100 mg among 4 ranked malate offers.
computed
Chart data
| Displayed chart text |
|---|
| n=4, band unstable |
| P25 $0.0739 |
| P75 $0.1402 |
| median $0.1052 |
| Rank | Label | Per 100 mg | Observed |
|---|---|---|---|
| 1 | Seeking Health Magnesium Malate 500 mg | $0.0460 | 2026-11-02 |
| 2 | BulkSupplements.com Magnesium Malate Capsules 400 mg | $0.0832 | 2026-11-02 |
| 3 | Trace Minerals Research Stress-X Magnesium Powder Lemon Lime | $0.1272 | 2026-11-02 |
| 4 | Thorne Calcium-Magnesium Malate | $0.1792 | 2026-11-02 |
| Median | 4 ranked malate offers | $0.1052 | 2026-11-02 |
Source · Amazon via licensed data provider; NIH DSLD · unique ASIN × date; prices observed 2026-10-26 to 2026-11-02 · release 2026-08-10-f441aa9f · CSV · method
How many days will this bottle last at the label's own serving, and what does a day cost?
At the label's own serving, Pharmax Magnesium Malate lasts 30–120 days: 120 servings against 1–4 servings a day in the filed directions.
computed| Measure | Value |
|---|---|
| Net contents as filed | 120 Vegetarian Capsule(s) |
| Serving size as filed | 1 Capsule(s) |
| Servings per container | 120 |
| Servings per day in the directions | 1–4 |
| Days per bottle | 30–120 days |
| $ per 30 days at one label serving a day | No ranked price as of 2026-11-02 |
| $ per 30 days at 420 mg Daily Value | No ranked price as of 2026-11-02 |
Source · NIH DSLD 288306 · label 2023-06-22; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
What does "30% Daily Value" mean here, and does it recompute?
The label declares 30% Daily Value; 125 mg against the 420 mg reference in 21 CFR 101.9 recomputes to 30%, the same within one point.
computed| Group as filed | Declared | Reference | Recomputed |
|---|---|---|---|
| Adults and children 4 or more years of age | 30% | 420 mg | 30% |
Source · NIH DSLD 288306; 21 CFR 101.9 · label 2023-06-22 · release 2026-08-10-f441aa9f · CSV · method
Why does this label contain magnesium stearate, what shell is it, and who is it filed for?
Pharmax Magnesium Malate files 3 other ingredients, including magnesium stearate (reference fraction 4.1% magnesium; no quantity filed, so it is not added to the total) and a vegetarian shell, against 12 of 20 malate labels that list magnesium stearate.
measured| Entry | Filed ingredient or declaration |
|---|---|
| 1 | Hypromellose |
| 2 | Silica |
| 3 | Magnesium Stearate |
| Shell | vegetarian |
| Target group | Children 4 or More Years of Age |
| Target group | Adult (18 - 50 Years) |
Source · NIH DSLD 288306 · label 2023-06-22; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
What has research measured about malate, and about side effects?
3 studies in the PubMed-checked registry measured outcomes involving malate; none reports a gastrointestinal outcome as of 2026-11-02. They measured the salt, not this label.
measured| Year | Study | PubMed |
|---|---|---|
| 2020 | Dose-Dependent Absorption Profile of Different Magnesium Compounds | 30761462 |
| 2019 | Timeline (Bioavailability) of Magnesium Compounds in Hours: Which Magnesium Compound Works Best? | 29679349 |
| 2018 | Scottsdale Magnesium Study: Absorption, Cellular Uptake, and Clinical Effectiveness of a Timed-Release Magnesium Supplement in a Standard Adult Clinical Population. | 29425476 |
Source · PubMed-checked study registry · registry checked 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
Has this brand had FDA recalls or adverse event reports?
Pharmax has 0 FDA recall records matched by brand name in the enforcement data queried 2026-10-19. Pharmax has no FDA CAERS adverse event report on record at brand level as of 2026-10-19 (143 of 273 brands in this registry have at least one CAERS report).
measured| Recall | Date | Reason | Status |
|---|---|---|---|
| No recall record as of 2026-10-19 |
Source · openFDA enforcement and CAERS · queried 2026-10-19 · release 2026-08-10-f441aa9f · CSV · method
Is this the same formula as another brand's, and how do their prices differ?
No other brand files the same formulation (ingredients, shell, units and rounded amount) as of 2026-11-02.
computed| Label | Brand | Price per 100 mg |
|---|---|---|
| No cross-brand match as of 2026-11-02 |
Source · NIH DSLD 288306 · label 2023-06-22; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
Which labels are closest to this one, with the same salt and dose?
No other label files the same resolved salt within ±10% of this label's dose per unit as of 2026-11-02.
computed| Label | Elemental per unit | Price | Verdict |
|---|---|---|---|
| No neighbour as of 2026-11-02 |
Source · NIH DSLD 288306 · label 2023-06-22; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
Where does this record come from, what is missing, and how do I cite or correct it?
Every value on this page traces to NIH DSLD 288306 (label 2023-06-22, snapshot 2026-08-10) and the chemistry model of 2026-09-13. 1 gap remain: No US retail price matched as of 2026-11-02 (barcode 8 83196 20770 1). The CSV carries the values shown here.
measured| Field | As filed |
|---|---|
| NIH DSLD label | NIH DSLD 288306 |
| Scanned label (PDF) | Label 288306 scan |
| Label date | 2023-06-22 |
| Date entered into DSLD | 2023-06-22 |
| Barcode (UPC) as filed | 8 83196 20770 1 |
| Label version · Image difference, same product | NIH DSLD 55701 |
| Made in the UK for | Seroyal USA, Pittsburgh, PA, USA |
| Claim category as filed | All Other |
9 additional rows
| Field | As filed |
|---|---|
| Suggested/Recommended/Usage/Directions | Recommended intake: Adults: One capsule taken 2-4 times daily with meals or as professionally directed. Adolescents: (9-18 years): One capsule taken 1-2 times daily with meals or as professionally directed. |
| Precautions re: Pregnant or Nursing or Prescription Medications | Warning: If you are pregnant or lactating, have any health condition or are taking any medication, consult your health professional before use. |
| Precautions re: All Other | Some people may experience diarrhea. Use only if safety seal is intact. |
| Storage | Store in a cool, dry place. |
| General Statements: All Other Content | Contents may not fill package in order to accommodate required labeling. Please rely on stated quantity. |
| Precautions re: Children | Keep out of the reach of children. |
| FDA Statement of Identity | Dietary Supplement |
| Physical state | Capsule |
| Registry snapshot | 2026-08-10 |
Source · NIH DSLD 288306 · label 2023-06-22; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
6 brand pages linked below contain magnesium labels from the NIH DSLD registry snapshot dated 2026-08-10.