Form table · observed 2026-08-10
Magnesium oxide
Verified median EC100 is $0.1051. Candidate matches awaiting review are kept in a separate section.
DSLD labels114
Verified median EC100$0.1051
Screened observed range$0.0060–$1.1405
The observed range includes 14 screened retail matches, including rows pending verification. It is descriptive, not a cross-form ranking.
Verified rows 4
| BIOVEA | Calcium-MagnesiumNIH DSLD · Label 248974 | 500 mg | 83 | $14.99Per container · Price observed 2026-09-07, Amazon | $0.036141.50 total elemental g/container | Verified |
| Carlson | Magnesium Gels 400 mgNIH DSLD · Label 216334 | 400 mg | 100 | $25.42Per container · Price observed 2026-09-07, Amazon | $0.063640.00 total elemental g/container | Verified |
| AvalonX Powered by MDLogic | Magnesium 8NIH DSLD · Label 299138 | 500 mg | 30 | $21.99Per container · Price observed 2026-09-07, Amazon | $0.146615.00 total elemental g/container | Verified |
| Douglas Laboratories | Magnesix Magnesium And B-6NIH DSLD · Label 26807 | 50 mg | 100 | $11.50Per container · Price observed 2026-09-07, Amazon | $0.23005.00 total elemental g/container | Verified |
Pending verification 10
These candidate retail-to-label matches remain separate from verified rows and are not included in verified medians.
| BulkSupplements.com | Magnesium Oxide PowderNIH DSLD · Label 329720 | 500 mg | 599 | $17.97Per container · Price observed 2026-09-11, Amazon | $0.0060299.50 total elemental g/container | Pending verification |
| Basic Vitamins | Magnesium 250 mgNIH DSLD · Label 250165 | 250 mg | 100 | $5.39Per container · Price observed 2026-09-07, Amazon | $0.021625.00 total elemental g/container | Pending verification |
| Wonder Labs | Magnesium Oxide 400NIH DSLD · Label 261002 | 482.6 mg | 125 | $21.49Per container · Price observed 2026-09-11, Amazon | $0.035660.33 total elemental g/container | Pending verification |
| Wonder Labs | Magnesium Oxide 400NIH DSLD · Label 262919 | 482.6 mg | 125 | $21.49Per container · Price observed 2026-09-11, Amazon | $0.035660.33 total elemental g/container | Pending verification |
| Wonder Labs | Magnesium Oxide 400NIH DSLD · Label 316129 | 482.6 mg | 125 | $21.49Per container · Price observed 2026-09-11, Amazon | $0.035660.33 total elemental g/container | Pending verification |
| Solgar | Magnesium with Vitamin B6NIH DSLD · Label 218431 | 400 mg | 83 | $16.76Per container · Price observed 2026-08-10, Amazon | $0.050533.20 total elemental g/container | Pending verification |
| DC | Magnesium 500 mgNIH DSLD · Label 267037 | 500 mg | 60 | $23.99Per container · Price observed 2026-08-10, Amazon | $0.080030.00 total elemental g/container | Pending verification |
| DC | Magnesium Oxide 400 mgNIH DSLD · Label 267034 | 241.3 mg | 120 | $24.99Per container · Price observed 2026-08-10, Amazon | $0.086328.96 total elemental g/container | Pending verification |
| Solgar | Magnesium with Vitamin B6NIH DSLD · Label 218430 | 400 mg | 33 | $16.76Per container · Price observed 2026-08-10, Amazon | $0.127013.20 total elemental g/container | Pending verification |
| Nature's Way | Alpha Betic Cinnamon with Magnesium & BiotinNIH DSLD · Label 213757 | 200 mg | 30 | $68.43Per container · Price observed 2026-09-07, Amazon | $1.14056.00 total elemental g/container | Pending verification |
Compare oxide with other salts
13 published comparisons include magnesium oxide 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 oxide vs magnesium citrate: 11.3–16.16% magnesium by mass; 619–885 mg compound per 100 mg elemental magnesium.
- Magnesium oxide vs magnesium glycinate: 11.83–14.1% magnesium by mass; 709–845 mg compound per 100 mg elemental magnesium.
- Magnesium oxide vs magnesium malate: 13.2–15.54% magnesium by mass; 644–758 mg compound per 100 mg elemental magnesium.
- Magnesium oxide vs magnesium aspartate: 8.42% magnesium by mass; 1,188 mg compound per 100 mg elemental magnesium.
- Magnesium oxide vs magnesium carbonate: 24.78–28.83% magnesium by mass; 347–404 mg compound per 100 mg elemental magnesium.
- Magnesium oxide vs magnesium gluconate: 5.86% magnesium by mass; 1,706 mg compound per 100 mg elemental magnesium.
- Magnesium oxide vs magnesium chloride: 11.96–25.53% magnesium by mass; 392–836 mg compound per 100 mg elemental magnesium.
- Magnesium oxide vs magnesium taurate: 8.85% magnesium by mass; 1,130 mg compound per 100 mg elemental magnesium.
- Magnesium oxide vs magnesium hydroxide: 41.68% magnesium by mass; 240 mg compound per 100 mg elemental magnesium.
- Magnesium oxide vs magnesium l-threonate: 8.25% magnesium by mass; 1,212 mg compound per 100 mg elemental magnesium.
- Magnesium oxide vs magnesium orotate: 7.27% magnesium by mass; 1,376 mg compound per 100 mg elemental magnesium.
- Magnesium oxide vs magnesium lactate: 12.01% magnesium by mass; 833 mg compound per 100 mg elemental magnesium.
- Magnesium oxide vs magnesium sulfate: 9.86–20.19% magnesium by mass; 495–1,014 mg compound per 100 mg elemental magnesium.
Excipients most common in oxide labels
5 published excipient facets below have the highest frequencies among 124 labels mentioning magnesium oxide in the NIH DSLD records, counted 2026-09-13; each label enters an ingredient count once.
- magnesium stearate: 65 of 124 labels.
- silicon dioxide: 61 of 124 labels.
- cellulose: 54 of 124 labels.
- microcrystalline cellulose: 42 of 124 labels.
- stearic acid: 30 of 124 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.