Label arithmetic · NIH DSLD 337855
Thorne Calcium-Magnesium Malate: 100 mg of magnesium per capsule, 3 capsules a day, $16.13 a month
100 mg of magnesium per capsule; the label's 3 capsules a day cost $16.13 a month (Amazon, Nov 2). Inside: salt weight, capsule size, price rank.
Thorne Calcium-Magnesium Malate declares 100 mg of elemental magnesium per serving as malate, which needs 644–792 mg of magnesium malate in each capsule, against 730 mg in a size 00 capsule at powder density 0.8 g/mL, the top of the usual 0.6–0.8 range: it needs size 00 or larger. Observed at $0.1792 per 100 mg, rank 4 of 4 ranked malate offers; a percentile is given from 5 offers. NIH DSLD 337855, label dated 2025-09-25.
computed from the filed label
Chart data
| Displayed chart text |
|---|
| 545 mg |
| 730 mg |
| 1,100 mg |
| 644–792 mg of malate per capsule |
Data release 2026-08-10-f441aa9f · registry snapshot 2026-08-10 · latest price observation 2026-11-02 · chemistry 2026-10-17
Mass: 644–792 mg per capsule · Price: $0.1792 per 100 mg · % DV: 24% vs 24%
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 100 mg of malate actually fit in one capsule, or do I need more than one?
Estimated salt mass versus assumed capsule capacity: Thorne Calcium-Magnesium Malate implies 644–792 mg of magnesium malate in each capsule to deliver 100 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 00, read at the most favourable hydration and the most units per serving.
computed with assumption| Measure | Value |
|---|---|
| Elemental magnesium per serving | 100 mg |
| Units per serving | 1 |
| Magnesium malate per serving | 644–792 mg |
| Magnesium malate per capsule | 644–792 mg |
| Capsule capacity 0 · 00 · 000 | 545 · 730 · 1,100 mg |
| Verdict | Needs size 00 |
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 337855 · label 2025-09-25; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
How much elemental magnesium is actually in this label's filed magnesium lines?
Thorne Calcium-Magnesium Malate files 1 magnesium line in NIH DSLD 337855; the selected primary line declares 100 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 |
|---|---|---|
| 100 mg | Salt not named in this row; magnesium malate is taken from the label text | Primary serving |
Source · NIH DSLD 337855 · label 2025-09-25; 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 337855 · label 2025-09-25; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
Is this a good price for the elemental magnesium I'm actually getting?
Thorne Calcium-Magnesium Malate costs $0.1792 per 100 mg of elemental magnesium at the price observed 2026-11-02, rank 4 of 4 ranked malate offers; a percentile is given from 5 offers, against a same-salt median of $0.1052; prices observed 2026-10-26 to 2026-11-02. First observed 2026-10-05 at $43.00, latest 2026-11-02 at $43.00, 4 observations.
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, Thorne Calcium-Magnesium Malate lasts 80 days: 240 servings against 3 servings a day in the filed directions. $16.13 a month at the label's suggested use (3 capsules a day) and $22.58 at the 420 mg Daily Value reference (21 CFR 101.9); arithmetic on the label, not intake advice.
computed| Measure | Value |
|---|---|
| Net contents as filed | 240 Capsule(s) |
| Serving size as filed | 1 Capsule(s) |
| Servings per container | 240 |
| Servings per day in the directions | 3 |
| Days per bottle | 80 days |
| Cost a month at the label suggested use | $16.13 a month at the label's suggested use (3 capsules a day) |
| $ per 30 days at 420 mg Daily Value | $22.58 |
Source · NIH DSLD 337855 · label 2025-09-25; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
What does "24% Daily Value" mean here, and does it recompute?
The label declares 24% Daily Value; 100 mg against the 420 mg reference in 21 CFR 101.9 recomputes to 24%, the same within one point.
computed| Group as filed | Declared | Reference | Recomputed |
|---|---|---|---|
| Adults and children 4 or more years of age | 24% | 420 mg | 24% |
Source · NIH DSLD 337855; 21 CFR 101.9 · label 2025-09-25 · release 2026-08-10-f441aa9f · CSV · method
Why does this label contain these other ingredients, what shell is it, and who is it filed for?
Thorne Calcium-Magnesium Malate files 3 other ingredients and a vegetarian shell, and no magnesium stearate, against 12 of 20 malate labels that list magnesium stearate.
measured| Entry | Filed ingredient or declaration |
|---|---|
| 1 | Hypromellose |
| 2 | Medium Chain Triglyceride Oil |
| 3 | Calcium Laurate |
| Shell | vegetarian |
| Target group | Adult (18 - 50 Years) |
| Target group | Gluten Free |
Source · NIH DSLD 337855 · label 2025-09-25; 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?
Thorne has 0 FDA recall records matched by brand name in the enforcement data queried 2026-10-19. Thorne has FDA CAERS adverse event reports on record at brand level, as do 143 of 273 brands in this registry; openFDA states that “there is no certainty that the reported event (adverse event) was actually due to the product” and that reports “cannot be used to estimate the incidence of these events.”
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 337855 · label 2025-09-25; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
Which labels are closest to this one, with the same salt and dose?
2 labels use the same resolved malate within ±10% of this label's 100 mg per unit, compared side by side on price and capsule verdict.
computed| Label | Elemental per unit | Price | Verdict |
|---|---|---|---|
| BulkSupplements.com Magnesium Malate Capsules 400 mg | 100 mg | $19.96 · 2026-11-02 | Needs size 00 |
| NOW Magnesium Malate Caps | 95 mg | No price | Needs size 00 |
Source · NIH DSLD 337855 · label 2025-09-25; 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 337855 (label 2025-09-25, snapshot 2026-08-10), a price observed 2026-11-02 and the chemistry model of 2026-09-13. No data gap remains for the computed fields. The CSV carries the values shown here.
measured| Field | As filed |
|---|---|
| NIH DSLD label | NIH DSLD 337855 |
| Scanned label (PDF) | Label 337855 scan |
| Label date | 2025-09-25 |
| Date entered into DSLD | 2025-09-25 |
| Barcode (UPC) as filed | 6 93749 00671 8 |
| Label version · Image difference, same product | NIH DSLD 182054 |
| Label version · Image difference, same product | NIH DSLD 15874 |
| Label version · Image difference, same product | NIH DSLD 284201 |
18 additional rows
| Field | As filed |
|---|---|
| Label version · Image difference, same product | NIH DSLD 306265 |
| Label version · Image difference, same product | NIH DSLD 270767 |
| Label version · Image difference, same product | NIH DSLD 323100 |
| Label version · Image difference, same product | NIH DSLD 298061 |
| Manufactured in the USA using US & imported ingredients by | Thorne Research, Inc. |
| Claim category as filed | All Other |
| Claim category as filed | Structure/Function |
| Formulation re: Other | Foundational Muscle/Tendon Bone support |
| Suggested/Recommended/Usage/Directions | Suggested use: Take 1 capsule three times daily or as recommended by your health-care practitioner. |
| Precautions re: All Other | Tamper evident: Use only if bottle is sealed. |
| Storage | Store tightly sealed in a cool, dry place. |
| Precautions re: Pregnant or Nursing or Prescription Medications | If pregnant, consult your health-care practitioner before using this product. |
| Formulation re: Does NOT Contain | Gluten free |
| Seals/Symbols | NSF Contents Certified |
| FDA Disclaimer Statement | This statement has not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. |
| FDA Statement of Identity | Dietary Supplement |
| Physical state | Capsule |
| Registry snapshot | 2026-08-10 |
Source · NIH DSLD 337855 · label 2025-09-25; 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.