A form of magnesium
Magnesium L-threonate supplements
72 magnesium products in the NIH label database list magnesium as magnesium L-threonate (under 1% of the 15,088 magnesium products); their median is 144 mg of magnesium per serving, against 86 mg across all magnesium products; the 41 whose only supplement ingredient is magnesium list a median of 144 mg (DSLD version 9.4.0, January 2026).
How does magnesium L-threonate compare with the other forms?
The median amount of magnesium per serving in products naming each form; the count in brackets. The amount is the magnesium the label gives, as printed (the Supplement Facts row normally states the element; a row named as the compound usually gives the compound's weight and is left out of these figures).
Median magnesium per serving by form
Source: Supplement Facts rows and their forms, NIH ODS Dietary Supplement Label Database version 9.4.0, current labels.
- Products
- 7264 on the market
- Median magnesium per serving
- 144 mgall magnesium products: 86 mg
- Share of magnesium products
- under 1%72 of 15,088
Is the amount the magnesium or the whole magnesium L-threonate?
A Supplement Facts row normally states the magnesium itself (a row like "Magnesium (as magnesium L-threonate)"); a row named as the compound (a row like "Magnesium L-threonate") usually states the compound's weight, which includes what the magnesium is bound to and is larger than the magnesium it supplies. The front of a bottle may print either. Of the 72 products here, 72 give the magnesium in its own row (3 of them an amount far outside what other labels list, or one their own %DV disagrees with).
The adult Tolerable Upper Intake Level for magnesium is 350 mg a day; it covers magnesium from supplements and medicines only, not food or water. At the most servings their labels direct, 11 of the 69 magnesium L-threonate products with a plausible amount (15.9%) give more than that.
Source: Supplement Facts rows of each product's current label, NIH ODS Dietary Supplement Label Database version 9.4.0; upper limit: Institute of Medicine Dietary Reference Intakes (2011) (what counts as plausible).
What else do these products contain?
| Ingredient | Share of these products | Median here | Median, all products |
|---|---|---|---|
| Vitamin B12 | 13% | 1,000 mcg | 36 mcg |
| Vitamin C | 11% | 85 mg | 100 mg |
| Vitamin D | 11% | 26.25 mcg | 15 mcg |
| Niacin | 10% | 30 mg | 20 mg |
| Theanine | 10% | 200 mg | 100 mg |
| Vitamin B6 | 10% | 10 mg | 6 mg |
| Zinc | 8% | 2.2 mg | 11 mg |
| 5-HTP | 8% | 100 mg | 100 mg |
| Potassium | 7% | 177.5 mg | 99 mg |
| Pantothenic Acid (Vitamin B5) | 7% | 11 mg | 12 mg |
Which products are they?
60 of the 72 (on-market products first, the newest label first), ordered by the amount of magnesium per serving, largest first; an amount that looks like a slip or a compound's weight comes last, marked.
- CannaCalm Sleep Support Natural Orange FlavorDr. Mercola420 mg
- Easy Night'sSimply Natures Pure302 mg
- OptiMag NeuroXYMOGEN200 mg
- OptiMag Neuro Natural Mixed Berry FlavorXYMOGEN200 mg
- CereMag Mixed BerryOrtho Molecular Products200 mg
- MagEnhanceIntelligent Labs200 mg
- Easy Mag PlusWoodstock Vitamins200 mg
- Brain MagX Wild BlueberryPure TheraPro Rx200 mg
- Neuro-Mag Concepts UnflavoredNHC Natural Healthy Concepts200 mg
- MagTechNS Natural Stacks200 mg
- Easy Mag Plus Natural Mixed BerryWoodstock Vitamins200 mg
- Neuro-Mag Concepts Lemon-LimeNHC Natural Healthy Concepts200 mg
- MigraVoidNuMedica160 mg
- Magnesium AdvancedDr. Mercola145 mg
- MagteinNOW144 mg
- Magtein Magnesium L-ThreonateBluebonnet144 mg
- Liposomal MagnesiumCodeage144 mg
- Neuro-Mag Magnesium L-ThreonateLife Extension144 mg
- Magnesium L-Threonate 2000 mgSports Research144 mg
- Magtein Magnesium L-ThreonateProtocol For Life Balance144 mg
- Magnesium ThreonateMomentous144 mg
- Mag LT 2000 mgSports Research144 mg
- Mag ThreonateOrtho Molecular Products144 mg
- Brain AwakeningRedd Remedies144 mg
- MagteinMoss Nutrition144 mg
- Magtein Magnesium L-Threonate 667 mgSource Naturals144 mg
- Magnesium L-ThreonateDr. Mercola144 mg
- Magtein Magnesium L-TreonateLuckyVitamin144 mg
- MagteinBricker Labs144 mg
- Magnesium L-ThreonateTeraputics Pure Life144 mg
- Magtein Magnesium L-Threonate PowderNootropics Depot144 mg
- Magnesium ThreonateThe Vitamin Shoppe144 mg
- Magnesium L-Threonate with Vitamins C & D3Nature Made130 mg
- MentalSupportHerbs SRA120 mg
- Wellness Essentials Brain HealthMetagenics115 mg
- MagFocus Natural Lemon Lime FlavorSuzy Cohen100 mg
- Lithium Orotate 5 +Tri-Magnesium Complex +Vitamin EWeyland Brain Nutrition100 mg
- Tri-Magnesium Complex +Vitamin EWeyland Brain Nutrition100 mg
- Mag L-ThreonateMetagenics98 mg
- Magnesium L-Threonate Vanilla CreamCymbiotika94 mg
- SerotoninHelpHerbs SRA80 mg
- MITO//PLEX The OriginalPruvit Ventures75 mg
- 3-in-1 Magtein Apigenin Theanine Complexeleva NUTRITION74 mg
- Magnesium NightcapAvalonX Powered by MDLogic73.4 mg
- Brain HealthQunol72 mg
- Magtein Brain Health SupportAmandean72 mg
- Night OwlAmbrosia72 mg
- Mind-MaxNature's Sunshine70 mg
- Mental AlertnessWoodstock Vitamins70 mg
- CogniquilXYMOGEN70 mg
- MagnesiumWholly Liquid50 mg
- Magnesium L-ThreonateSwanson48 mg
- Cogni-ZoneProgressive Professional from Progressive Laboratories48 mg
- NutriNeuroHerbs SRA46 mg
- Limitless MindLean Factor12.6 mg
- EmpowHERLean Factor9.5 mg
- Peak MaleLean Factor8.3 mg
- Magtein Magnesium L-Threonate 2000 mgSuperSmart2,000 mg (possible slip)
- Magnesium L-Threonate 2000 mgDouble Wood Supplements2,000 mg (possible slip)
- ProtoSorb MagnesiumProtocol For Life Balance2,144 mg (possible slip)
Source: NIH ODS Dietary Supplement Label Database version 9.4.0; the form each label names for its row. Daily Values: the FDA's Daily Value page.
Which brands make them?
XYMOGEN (4), Dr. Mercola (3), Woodstock Vitamins (3), Lean Factor (3), Herbs SRA (3), Metagenics (2), NHC Natural Healthy Concepts (2), Life Extension (2), Weyland Brain Nutrition (2), Bluebonnet (2).