Form · as filed on labels
Magnesium orotate
Magnesium orotate is 7.27% elemental magnesium by mass (Mg(C₅H₃N₂O₄)₂, molar mass 334.49). Every 100 mg of elemental magnesium from it needs 1,376 mg of the compound, calculated 2026-09-13. 4 on-market labels name this form. Median filed amount is 212.5 mg elemental magnesium per serving across 4 computed labels. 2 of these labels blend this form with other forms.
Chemistry · fixed
How much orotate carries how much magnesium
A US Supplement Facts panel declares the element, not the salt. Magnesium orotate has a molar mass of 334.49 against magnesium's 24.305, so 7.27% of its mass is magnesium.
| Elemental magnesium | orotate required | Size 00 capsules that much powder fills |
|---|---|---|
| 100 mg | 1,376 mg | 2 |
| 200 mg | 2,751 mg | 4 |
| 400 mg | 5,502 mg | 8 |
A size 00 capsule holds about 730 mg of powder at powder density 0.6–0.8 g/mL; a size 000 about 1,100 mg.
Mass budget across this form · computed
1 of 1 capsule labels naming this form exceed every standard capsule
| Fits a size 0 or 00 capsule | 0 |
|---|---|
| Requires the largest standard size, 000 | 0 |
| Exceeds every standard capsule | 1 |
Counted only for capsule labels naming this salt alone. Full method and the corpus-wide figure: label mass-budget audit.
Median and range use the 4 labels with one determinable amount per serving, excluding any above 1,000 mg as filed. 0 of these labels carry an observed price in the gold set. This form has no priced EC100 table yet.
Labels filing this form 4
| Dr. Sinatra | Magnesium Broad-Spectrum ComplexNIH DSLD · Label 286044 · Capsule | citrate, glycinate, orotate | 200 mg | 60 | 12.00 g | Not tracked yet |
| LifeLink | Magnesium Orotate 775NIH DSLD · Label 11812 · Tablet or Pill | orotate | 56 mg | Not filed | — | Not tracked yet |
| Solaray | Magnesium Asporotate 400 mgNIH DSLD · Label 338471 · Capsule | orotate | 400 mg | 60 | 24.00 g | Not tracked yet |
| VitaMonk | Quad-MagnesiumNIH DSLD · Label 242165 · Capsule | glycinate, malate, orotate | 225 mg | 30 | 6.75 g | Not tracked yet |
See all forms, brands, or the priced form matrix.
Compare orotate with other salts
13 published comparisons include magnesium orotate as of 2026-09-13; each row gives the other salt's magnesium fraction and compound mass for 100 mg elemental magnesium from the chemistry model.
- Magnesium orotate vs magnesium citrate: 11.3–16.16% magnesium by mass; 619–885 mg compound per 100 mg elemental magnesium.
- Magnesium orotate vs magnesium glycinate: 11.83–14.1% magnesium by mass; 709–845 mg compound per 100 mg elemental magnesium.
- Magnesium orotate vs magnesium oxide: 60.32% magnesium by mass; 166 mg compound per 100 mg elemental magnesium.
- Magnesium orotate vs magnesium malate: 13.2–15.54% magnesium by mass; 644–758 mg compound per 100 mg elemental magnesium.
- Magnesium orotate vs magnesium aspartate: 8.42% magnesium by mass; 1,188 mg compound per 100 mg elemental magnesium.
- Magnesium orotate vs magnesium carbonate: 24.78–28.83% magnesium by mass; 347–404 mg compound per 100 mg elemental magnesium.
- Magnesium orotate vs magnesium gluconate: 5.86% magnesium by mass; 1,706 mg compound per 100 mg elemental magnesium.
- Magnesium orotate vs magnesium chloride: 11.96–25.53% magnesium by mass; 392–836 mg compound per 100 mg elemental magnesium.
- Magnesium orotate vs magnesium taurate: 8.85% magnesium by mass; 1,130 mg compound per 100 mg elemental magnesium.
- Magnesium orotate vs magnesium hydroxide: 41.68% magnesium by mass; 240 mg compound per 100 mg elemental magnesium.
- Magnesium orotate vs magnesium l-threonate: 8.25% magnesium by mass; 1,212 mg compound per 100 mg elemental magnesium.
- Magnesium orotate vs magnesium lactate: 12.01% magnesium by mass; 833 mg compound per 100 mg elemental magnesium.
- Magnesium orotate vs magnesium sulfate: 9.86–20.19% magnesium by mass; 495–1,014 mg compound per 100 mg elemental magnesium.
Excipients most common in orotate labels
5 published excipient facets below have the highest frequencies among 8 labels mentioning magnesium orotate in the NIH DSLD records, counted 2026-09-13; each label enters an ingredient count once.
- magnesium stearate: 5 of 8 labels.
- cellulose: 3 of 8 labels.
- silicon dioxide: 3 of 8 labels.
- gelatin: 2 of 8 labels.
- hypromellose: 2 of 8 labels.
The metric
What EC100 measures
EC100 = container price ÷ (elemental mg per serving × servings per container ÷ 100)
It normalizes the declared elemental amount to a 100 mg unit. It does not score ingredients, quality, or outcomes.