Same elemental magnesium · two salts · snapshot 2026-08-10
Magnesium orotate vs l-threonate: 2,751 vs 2,424 mg of compound for 200 mg of magnesium
Magnesium orotate is 7.3% elemental magnesium and magnesium l-threonate is 8.3%, so 200 mg of magnesium needs 2,751 mg of orotate against 2,424 mg of l-threonate: 4 vs 4 size 00 capsules at powder density 0.8 g/mL, the top of the usual 0.6–0.8 range. 0 of 3 capsule labels naming orotate alone are above the assumed size 000 capacity at powder density 0.8 g/mL, against 0 of 6 for l-threonate. Prices within each salt: orotate $0.7937 per 100 mg (a single ranked offer); l-threonate $1.1572 per 100 mg (a single ranked offer); observed 2026-10-26 to 2026-11-02.
computed from chemical formulas
Chart data
| Displayed chart text |
|---|
| 100 mg magnesium |
| l-threonate 1,212 · orotate 1,376 |
| 200 mg magnesium |
| l-threonate 2,424 · orotate 2,751 |
| 400 mg magnesium |
| l-threonate 4,848 · orotate 5,502 |
Data release 2026-08-10-f441aa9f · registry snapshot 2026-08-10 · latest price observation 2026-11-02 · chemistry 2026-10-17
How much orotate or l-threonate carries the same elemental magnesium?
At the same elemental amount, l-threonate (8.3% magnesium) always needs less compound than orotate (7.3%): for 400 mg of magnesium, 4,848 mg against 5,502 mg. That is the mass of powder per dose; how much of it is absorbed is what the studies below measured.
computed| Elemental magnesium | orotate compound | orotate size 00 | L-threonate compound | L-threonate size 00 |
|---|---|---|---|---|
| 100 mg | 1,376 mg | 2 | 1,212 mg | 2 |
| 200 mg | 2,751 mg | 4 | 2,424 mg | 4 |
| 400 mg | 5,502 mg | 8 | 4,848 mg | 7 |
Source · Chemical formulas and NIH DSLD labels · snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
Estimated salt mass versus assumed capsule capacity
0 of 3 capsule labels naming orotate alone are above the assumed size 000 capacity at powder density 0.8 g/mL, against 0 of 6 for l-threonate. Verdicts use the most favourable hydration and the most units per serving at powder density 0.8 g/mL, the top of the usual 0.6–0.8 range; the audited registry as a whole has 8 of 137 capsule labels above size 000.
computed with assumption
Chart data
| Displayed chart text |
|---|
| orotate |
| fits 3 of 3 |
| needs 000 0 of 3 |
| exceeds 0 of 3 |
| l-threonate |
| fits 6 of 6 |
| needs 000 0 of 6 |
| exceeds 0 of 6 |
| Salt | Audited capsule labels | Fits 0 or 00 | Needs 000 | Exceeds 000 |
|---|---|---|---|---|
| orotate | 3 | 3 | 0 | 0 |
| L-threonate | 6 | 6 | 0 | 0 |
Source · NIH DSLD labels; mass balance · recognized salt only; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
What does each cost per 100 mg of elemental magnesium, within its own salt?
Compared only with offers of the same salt: orotate $0.7937 per 100 mg (a single ranked offer); l-threonate $1.1572 per 100 mg (a single ranked offer). Prices observed 2026-10-26 to 2026-11-02; a ranking exists only inside one salt, because the compound mass per 100 mg of magnesium differs between salts.
computed| Salt | Ranked offers | Lowest per 100 mg | Median per 100 mg | Observed |
|---|---|---|---|---|
| orotate | 1 | $0.7937 | $0.7937 | 2026-11-02 |
| L-threonate | 1 | $1.1572 | $1.1572 | 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
Has any study measured orotate and l-threonate side by side?
No study in the PubMed-checked registry measured orotate and l-threonate side by side as of 2026-08-10; 0 involve orotate and 0 involve l-threonate separately.
measured| Year | Study | Salts measured | PubMed |
|---|
Source · PubMed-checked study registry · registry checked 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
How many labels name both orotate and l-threonate?
No label names both orotate and l-threonate as of 2026-08-10, against 8 labels naming orotate and 9 naming l-threonate.
measured| Label | Declared elemental per serving | NIH DSLD |
|---|---|---|
| No label as of 2026-08-10 |
Source · Chemical formulas and NIH DSLD labels · snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
What does every dose from 25 to 1,000 mg of magnesium need in each salt?
The table converts 40 elemental amounts, 25 to 1,000 mg in 25 mg steps, into compound mass and size 00 capsules for both salts, against 730 mg per size 00 capsule at powder density 0.8 g/mL, the top of the usual 0.6–0.8 range. The first eight rows are shown; the rest open below.
computed| Elemental magnesium | orotate compound | orotate size 00 | L-threonate compound | L-threonate size 00 |
|---|---|---|---|---|
| 25 mg | 344 mg | 1 | 303 mg | 1 |
| 50 mg | 688 mg | 1 | 606 mg | 1 |
| 75 mg | 1,032 mg | 2 | 909 mg | 2 |
| 100 mg | 1,376 mg | 2 | 1,212 mg | 2 |
| 125 mg | 1,719 mg | 3 | 1,515 mg | 3 |
| 150 mg | 2,063 mg | 3 | 1,818 mg | 3 |
| 175 mg | 2,407 mg | 4 | 2,121 mg | 3 |
| 200 mg | 2,751 mg | 4 | 2,424 mg | 4 |
32 additional rows
| Elemental magnesium | orotate compound | orotate size 00 | L-threonate compound | L-threonate size 00 |
|---|---|---|---|---|
| 225 mg | 3,095 mg | 5 | 2,727 mg | 4 |
| 250 mg | 3,439 mg | 5 | 3,030 mg | 5 |
| 275 mg | 3,783 mg | 6 | 3,333 mg | 5 |
| 300 mg | 4,127 mg | 6 | 3,636 mg | 5 |
| 325 mg | 4,470 mg | 7 | 3,939 mg | 6 |
| 350 mg | 4,814 mg | 7 | 4,242 mg | 6 |
| 375 mg | 5,158 mg | 8 | 4,545 mg | 7 |
| 400 mg | 5,502 mg | 8 | 4,848 mg | 7 |
| 425 mg | 5,846 mg | 9 | 5,152 mg | 8 |
| 450 mg | 6,190 mg | 9 | 5,455 mg | 8 |
| 475 mg | 6,534 mg | 9 | 5,758 mg | 8 |
| 500 mg | 6,878 mg | 10 | 6,061 mg | 9 |
| 525 mg | 7,221 mg | 10 | 6,364 mg | 9 |
| 550 mg | 7,565 mg | 11 | 6,667 mg | 10 |
| 575 mg | 7,909 mg | 11 | 6,970 mg | 10 |
| 600 mg | 8,253 mg | 12 | 7,273 mg | 10 |
| 625 mg | 8,597 mg | 12 | 7,576 mg | 11 |
| 650 mg | 8,941 mg | 13 | 7,879 mg | 11 |
| 675 mg | 9,285 mg | 13 | 8,182 mg | 12 |
| 700 mg | 9,629 mg | 14 | 8,485 mg | 12 |
| 725 mg | 9,972 mg | 14 | 8,788 mg | 13 |
| 750 mg | 10,316 mg | 15 | 9,091 mg | 13 |
| 775 mg | 10,660 mg | 15 | 9,394 mg | 13 |
| 800 mg | 11,004 mg | 16 | 9,697 mg | 14 |
| 825 mg | 11,348 mg | 16 | 10,000 mg | 14 |
| 850 mg | 11,692 mg | 17 | 10,303 mg | 15 |
| 875 mg | 12,036 mg | 17 | 10,606 mg | 15 |
| 900 mg | 12,380 mg | 17 | 10,909 mg | 15 |
| 925 mg | 12,724 mg | 18 | 11,212 mg | 16 |
| 950 mg | 13,067 mg | 18 | 11,515 mg | 16 |
| 975 mg | 13,411 mg | 19 | 11,818 mg | 17 |
| 1,000 mg | 13,755 mg | 19 | 12,121 mg | 17 |
Source · Chemical formulas and NIH DSLD labels · snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method