Filed label facet · NIH DSLD snapshot 2026-08-10
L-leucine: 20 of 716 magnesium labels (2.8%)
20 of 716 on-market magnesium labels (2.8%) file l-leucine in the NIH DSLD snapshot 2026-08-10; the largest group among them names no single magnesium salt (12 of 20). 1 of 8 of their capsule labels are above the assumed size 000 capacity at powder density 0.8 g/mL, against 8 of 137 across the registry. 1 have a matched US price as of 2026-11-02.
computed from filed labels
Chart data
| Displayed chart text |
|---|
| these labels |
| fits 4 of 8 |
| needs 000 3 of 8 |
| exceeds 1 of 8 |
| all audited |
| fits 82 of 137 |
| needs 000 47 of 137 |
| exceeds 8 of 137 |
Data release 2026-08-10-f441aa9f · registry snapshot 2026-08-10 · latest price observation 2026-11-02 · chemistry 2026-10-17
Elemental: The magnesium itself; the rest of the compound weight is the partner molecule.
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.
Which magnesium salts do labels with l-leucine use?
12 of 20 labels with l-leucine resolve to no single salt, the most common group; 5 salt groups appear in total, against 15 defined salts in the chemistry model.
measured
Chart data
| Displayed chart text |
|---|
| unresolved |
| 12 |
| citrate |
| 5 |
| aspartate |
| 1 |
| glycinate |
| L-threonate |
| Salt group | Labels |
|---|---|
| Single salt unresolved as of 2026-10-17 | 12 of 20 |
| Magnesium citrate | 5 of 20 |
| Magnesium aspartate | 1 of 20 |
| Magnesium glycinate | 1 of 20 |
| Magnesium L-threonate | 1 of 20 |
Source · NIH DSLD labels · snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
Do the capsule labels with l-leucine fit their declared salt?
1 of 8 audited capsule labels with l-leucine are above the assumed size 000 capacity at powder density 0.8 g/mL, against 8 of 137 across the registry, at powder density 0.8 g/mL, the top of the usual 0.6–0.8 range and the most favourable hydration.
computed with assumption| Verdict | These labels | All audited capsule labels |
|---|---|---|
| Fits size 0 or 00 | 4 of 8 | 82 of 137 |
| Needs size 000 | 3 of 8 | 47 of 137 |
| Exceeds size 000 | 1 of 8 | 8 of 137 |
Source · NIH DSLD labels; mass balance · recognized salt only; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
What do labels with l-leucine cost per 100 mg of elemental magnesium, within each salt?
1 of 20 labels with l-leucine have a matched US price as of 2026-11-02; each is shown against the median of its own salt, per 100 mg of declared elemental magnesium.
computed| Label | Salt | Per 100 mg | Same-salt median |
|---|---|---|---|
| Kirkman Magnesium Glycinate Bio-Max Series | glycinate | $0.4750 | $0.1889 |
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
Which labels file l-leucine?
20 on-market labels in the NIH DSLD snapshot 2026-08-10 file l-leucine, across 2 physical states; each row opens the label's own arithmetic.
measured| Label | Brand | Declared per serving | Physical state |
|---|---|---|---|
| Adaptogen Research Magnesium Citrate | Adaptogen Research | 150 mg | Capsule |
| Allergy Research Group Magnesium Ascorbate | Allergy Research Group | 70 mg | Capsule |
| Enzymedica Magnesium Motion | Enzymedica | Not one amount | Capsule |
| Enzymedica Magnesium Motion | Enzymedica | Not one amount | Capsule |
| Kirkman Magnesium Glycinate | Kirkman | 100 mg | Capsule |
| Kirkman Magnesium Glycinate Bio-Max Series | Kirkman | 100 mg | Capsule |
| Metabolic Maintenance Potassium/Magnesium Aspartate | Metabolic Maintenance | 99 mg | Capsule |
| Metabolic Maintenance Potassium/Magnesium Citrate | Metabolic Maintenance | 125 mg | Capsule |
12 additional rows
| Label | Brand | Declared per serving | Physical state |
|---|---|---|---|
| Moss Nutrition Magnesium Citrate | Moss Nutrition | 120 mg | Capsule |
| Moss Nutrition Magnesium Citrate | Moss Nutrition | 120 mg | Capsule |
| NuMedica Magnesium Citrate Extra Strength 200 mg | NuMedica | 200 mg | Capsule |
| NutriCology Magnesium Ascorbate | NutriCology | 70 mg | Capsule |
| Seeking Health Active Magnesium | Seeking Health | 100 mg | Tablet or Pill |
| Seeking Health Magnesium Plus | Seeking Health | 125 mg | Capsule |
| Seeking Health Optimal Magnesium 150 mg | Seeking Health | 150 mg | Capsule |
| The Vitamin Shoppe Magnesium Threonate | The Vitamin Shoppe | 144 mg | Capsule |
| UMZU Daily Magnesium | UMZU | 420 mg | Capsule |
| Vinco Magnesium Malate | Vinco | 137 mg | Capsule |
| Weyland Brain Nutrition Lithium Orotate 5 +Tri-Magnesium Complex +Vitamin E | Weyland Brain Nutrition | 100 mg | Capsule |
| Weyland Brain Nutrition Tri-Magnesium Complex +Vitamin E | Weyland Brain Nutrition | 100 mg | Capsule |
Source · NIH DSLD labels · snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
What else is filed alongside l-leucine?
hypromellose is the most frequent companion, on 9 of 20 labels with l-leucine; the table lists the 8 most frequent published ingredient facets on the same labels.
measured
Chart data
| Displayed chart text |
|---|
| hypromellose |
| 9 |
| cellulose |
| 5 |
| microcrystalline cellulose |
| silicon dioxide |
| water |
| ascorbyl palmitate |
| 3 |
| vegetarian capsule |
| citric acid |
| 1 |
| microcrystalline |
| Also filed | Labels |
|---|---|
| hypromellose | 9 of 20 |
| cellulose | 5 of 20 |
| microcrystalline cellulose | 5 of 20 |
| silicon dioxide | 5 of 20 |
| water | 5 of 20 |
| ascorbyl palmitate | 3 of 20 |
| vegetarian capsule | 3 of 20 |
| citric acid | 1 of 20 |
Source · NIH DSLD labels · snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
How is "l-leucine" counted, and which filed spellings feed it?
Each NIH DSLD label enters once, whatever its spelling; case and repeated spaces are normalized and known synonyms merged, using the snapshot 2026-08-10 and normalization dated 2026-10-17.
measured| Filed spelling |
|---|
| L-Leucine |
Source · NIH DSLD labels · 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.