Form · as filed on labels
Magnesium taurate
Magnesium taurate is 8.85% elemental magnesium by mass (Mg(C₂H₆NO₃S)₂, molar mass 274.58). Every 100 mg of elemental magnesium from it needs 1,130 mg of the compound, calculated 2026-09-13. 2 on-market labels name this form. Median filed amount is 262.5 mg elemental magnesium per serving across 2 computed labels. Small group: fewer than three computed labels, so the median is a single reading, not a distribution.
Chemistry · fixed
How much taurate carries how much magnesium
A US Supplement Facts panel declares the element, not the salt. Magnesium taurate has a molar mass of 274.58 against magnesium's 24.305, so 8.85% of its mass is magnesium.
| Elemental magnesium | taurate required | Size 00 capsules that much powder fills |
|---|---|---|
| 100 mg | 1,130 mg | 2 |
| 200 mg | 2,260 mg | 4 |
| 400 mg | 4,520 mg | 7 |
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
0 of 1 capsule labels naming this form exceed every standard capsule
| Fits a size 0 or 00 capsule | 1 |
|---|---|
| Requires the largest standard size, 000 | 0 |
| Exceeds every standard capsule | 0 |
Counted only for capsule labels naming this salt alone. Full method and the corpus-wide figure: label mass-budget audit.
Published measurements · peer-reviewed sources
1 published study has measured how this form is absorbed
Absorption is a separate question from mass, and a contested one. Below is what each study did, on whom, and what it measured — with the original linked. See the full literature page for why results conflict.
These entries report what each study measured and on whom. They are not advice, not a ranking, and not a claim about any product on this site. Every reference links to its PubMed record so the original can be read in full.
Timeline (Bioavailability) of Magnesium Compounds in Hours: Which Magnesium Compound Works Best?
- Design
- Single-dose administration of 400 mg/70 kg magnesium as one of five compounds (magnesium sulfate, magnesium oxide, magnesium acetyl taurate, magnesium citrate, magnesium malate) to Sprague Dawley rats, with a control group, followed by time-dependent tissue and serum sampling.
- What it measured
- Time-dependent magnesium absorption profile (area under the curve) in serum; magnesium tissue penetration and concentration, including brain tissue; behavioral indicators (e.g., anxiety-related behavior) recorded in the animals.
- Limits
- Animal model (Sprague Dawley rats), not humans — extrapolation of pharmacokinetic and behavioral findings to people is not established; single dose only, no chronic-dosing data; per-compound group sample size is not stated in the abstract; behavioral endpoints were measured only in rodents. The tested acetyl taurate is distinct from the unmodified taurate in the chemistry table.
Median and range use the 2 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 2
| Douglas Laboratories | Magnesium Taurate 400NIH DSLD · Label 232184 · Tablet or Pill | taurate | 400 mg | 30 | 12.00 g | Not tracked yet |
| The Vitamin Shoppe | Magnesium TaurateNIH DSLD · Label 180812 · Capsule | taurate | 125 mg | 90 | 11.25 g | Not tracked yet |
See all forms, brands, or the priced form matrix.
Compare taurate with other salts
13 published comparisons include magnesium taurate 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 taurate vs magnesium citrate: 11.3–16.16% magnesium by mass; 619–885 mg compound per 100 mg elemental magnesium.
- Magnesium taurate vs magnesium glycinate: 11.83–14.1% magnesium by mass; 709–845 mg compound per 100 mg elemental magnesium.
- Magnesium taurate vs magnesium oxide: 60.32% magnesium by mass; 166 mg compound per 100 mg elemental magnesium.
- Magnesium taurate vs magnesium malate: 13.2–15.54% magnesium by mass; 644–758 mg compound per 100 mg elemental magnesium.
- Magnesium taurate vs magnesium aspartate: 8.42% magnesium by mass; 1,188 mg compound per 100 mg elemental magnesium.
- Magnesium taurate vs magnesium carbonate: 24.78–28.83% magnesium by mass; 347–404 mg compound per 100 mg elemental magnesium.
- Magnesium taurate vs magnesium gluconate: 5.86% magnesium by mass; 1,706 mg compound per 100 mg elemental magnesium.
- Magnesium taurate vs magnesium chloride: 11.96–25.53% magnesium by mass; 392–836 mg compound per 100 mg elemental magnesium.
- Magnesium taurate vs magnesium hydroxide: 41.68% magnesium by mass; 240 mg compound per 100 mg elemental magnesium.
- Magnesium taurate vs magnesium l-threonate: 8.25% magnesium by mass; 1,212 mg compound per 100 mg elemental magnesium.
- Magnesium taurate vs magnesium orotate: 7.27% magnesium by mass; 1,376 mg compound per 100 mg elemental magnesium.
- Magnesium taurate vs magnesium lactate: 12.01% magnesium by mass; 833 mg compound per 100 mg elemental magnesium.
- Magnesium taurate vs magnesium sulfate: 9.86–20.19% magnesium by mass; 495–1,014 mg compound per 100 mg elemental magnesium.
Excipients most common in taurate labels
5 published excipient facets below have the highest frequencies among 12 labels mentioning magnesium taurate in the NIH DSLD records, counted 2026-09-13; each label enters an ingredient count once.
- cellulose: 6 of 12 labels.
- silicon dioxide: 6 of 12 labels.
- croscarmellose sodium: 4 of 12 labels.
- hypromellose: 4 of 12 labels.
- microcrystalline cellulose: 4 of 12 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.