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    Ingredient guide · Ingredient reference

    Is Magtein the same as magnesium L-threonate? Brand, form and amount

    Magtein is a branded magnesium L-threonate ingredient. Magnesium L-threonate names the compound, while Magtein identifies a particular commercial ingredient. Neither name alone describes every ingredient or the elemental magnesium amount in a finished supplement.

    Read the evidence ↓

    Supplement Science Insights Editorial Team

    Published September 23, 2026

    One name is a brand and the other is a form

    The ingredient supplier identifies Magtein as magnesium L-threonate. The terms therefore overlap when describing that ingredient, but the general chemical name is not itself proof of a product’s supplier or authenticity. A finished supplement can combine the ingredient with other substances. [1][2]

    Compound weight is not elemental magnesium weight

    The inspected Solgar label declares 72 mg magnesium from 1,000 mg Magtein magnesium L-threonate per serving. These are two descriptions of the same ingredient contribution, not two magnesium doses to add together. The larger number includes the rest of the compound. ODS explains that the Supplement Facts magnesium amount represents elemental magnesium. [2][3]

    Compare the full serving rather than a front-label number

    The same label also lists a separate PhytoMemory blend. Thus, a branded ingredient name does not make all finished formulas identical. Check serving size, elemental magnesium, other active ingredients and directions on the actual package; this example is not a recommendation of the product. [2]

    Identity does not settle a brain-health claim

    A supplier’s description establishes how it names its ingredient, not an independent conclusion that it prevents dementia or outperforms all magnesium forms for every user. This identity guide does not appraise the ingredient’s clinical trials. Routine magnesium safety still matters, including kidney function, medicine interactions and intake from other nonfood sources. [1][3]

    Use the elemental line for a hypothetical intake comparison

    Imagine comparing a bottle displaying a large compound amount with one displaying a smaller magnesium amount. First find each serving’s elemental magnesium line. Only then can their nutrient contributions be compared; equal compound weights across different salts need not mean equal magnesium. [3][2]

    Hypothetical example — read a hypothetical label comparison
    Label itemInterpretation
    MagteinBranded ingredient identity
    Magnesium L-threonateCompound form
    Magnesium in Supplement FactsElemental nutrient contribution
    Is Magtein the same as magnesium L-threonate? Brand, form and amount — original article outline diagram
    Original editorial diagram of this article’s sections; no product photograph or clinical finding is depicted.

    Sources for this article

    1. About Us - Magtein.com
      Source consulted: 2026-09-21. This is a reference resource, not a claim that we conducted the studies or tested a product.
    2. Magtein® Magnesium L-Threonate | Solgar®
      Source consulted: 2026-09-21. This is a reference resource, not a claim that we conducted the studies or tested a product.
    3. Magnesium - Health Professional Fact Sheet
      Source consulted: 2026-09-21. This is a reference resource, not a claim that we conducted the studies or tested a product.