Magnesium L-Threonate
A magnesium salt (Magtein) that raises brain magnesium in rodents, sold for memory and sleep. Human evidence is limited to small trials.
Dietary supplement.
Look it up on Wikipedia1 listing across 1 independently tested vendor, ranked by price per milligram after coupon codes anyone can use. Vendors you can only order from by message are hidden.
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Daily price tracking started October 7, 2026; a price-history chart appears here once a few days have been collected.
| Vendor | Trust | Listing | Vials | Price | Per mg | |
|---|---|---|---|---|---|---|
Modern Aminos Affiliate #125 by metascore · US |
Metascore 75 medium confidenceFinnrick 79%PepIndex 81/100Bought vials 100% of label · 5 testsTitrateLab · PeptideBase · Peptide CriticNo report for thisOnline checkout |
Magnesium L-Threonate $30 off through this site's link (new customers) |
1 × 500 mg | $28.00 $30 off through this site's link (new customers) |
$0.056 | Buy |
Mixing a 500 mg vial
What each common amount of bacteriostatic water gives you on a U-100 insulin syringe. Pick a vial size above to change it.
| Water | Strength | Per 10 units (0.1 mL) | Per unit |
|---|---|---|---|
| 1 mL | 500 mg/mL | 50,000 mcg | 5,000 mcg |
| 2 mL | 250 mg/mL | 25,000 mcg | 2,500 mcg |
| 3 mL | 166.667 mg/mL | 16,666.7 mcg | 1,666.67 mcg |
| 5 mL | 100 mg/mL | 10,000 mcg | 1,000 mcg |
Discussions elsewhere
Experiences and questions about Magnesium L-Threonate on other sites. Treat anecdotes with care.
Magnesium L-Threonate: questions people ask
What is Magnesium L-Threonate?
Mineral supplement. A magnesium salt (Magtein) that raises brain magnesium in rodents, sold for memory and sleep. Human evidence is limited to small trials.
How much does Magnesium L-Threonate cost?
The cheapest Magnesium L-Threonate from an independently tested vendor is $0.056 per mg (Modern Aminos, Magnesium L-Threonate, $28.00). Across 1 listings from 1 vendors the median is $0.056 per mg.
Where can I buy Magnesium L-Threonate?
1 vendors tested by Finnrick sell Magnesium L-Threonate. The cheapest per mg right now: Modern Aminos ($0.056). 0 of them publish a lab report (COA) for Magnesium L-Threonate; compare lab scores and reports in the table above before buying.
Is Magnesium L-Threonate FDA approved?
Dietary supplement.