SUPPLEMENT SCIENCEInsights
Search

Search Insights

Try choline, nano-curcumin or probiotics.

    Ingredient guide · Ingredient reference

    Magnesium glycinate brands: compare dose, format and cost

    There is no demonstrated clinical winner among magnesium glycinate brands in the sources inspected. NOW tablets and Thorne powder illustrate two different purchasing choices with the same labeled elemental amount per serving. Compare the current label, format, other ingredients and cost for an equivalent amount before deciding what fits your needs.

    Read the evidence ↓

    Supplement Science Insights Editorial Team

    Published September 23, 2026

    Compare the elemental serving first

    The inspected NOW Magnesium Glycinate label lists 200 mg elemental magnesium per two tablets. Thorne Magnesium Bisglycinate powder lists 200 mg per scoop. Glycinate and bisglycinate terminology alone does not tell you the serving size; use the actual magnesium line rather than the weight of the whole compound. [1][2][3]

    Choose a format you can use consistently

    NOW is the tablet option in this comparison, while Thorne is a powder mixed into water. The inspected Thorne product includes citric acid and monk-fruit concentrate; the NOW tablet has additional manufacturing and coating ingredients. Check the complete current ingredient list if an ingredient or texture matters to you. [1][2]

    Price comparisons need a date and denominator

    On September 21, 2026, the inspected NOW 90-tablet offer was $14.39 for 45 servings, about $0.32 per labeled 200 mg. Thorne listed $52 for 60 servings, about $0.87 per 200 mg. These are page snapshots before shipping or other discounts and can change; they do not establish comparative absorption or health benefit. [1][2]

    Quality claims are not a treatment ranking

    Manufacturer descriptions and certification claims should be checked for the exact product and current certification scope. This comparison did not independently test either product or establish that one treats insomnia, anxiety or deficiency better. NCCIH describes limited high-quality evidence for magnesium in insomnia. [1][2][4]

    Match the choice to the reason for taking it

    Imagine two products each provide 200 mg but one needs two tablets and the other a flavored drink. Preference and cost may decide between them, while kidney function, medicines and the total nonfood magnesium amount determine whether either is appropriate. A larger or more expensive serving is not automatically better. [3]

    Hypothetical example — compare equal labeled amounts without a clinical ranking
    PreferenceWhat to compare
    Avoid a drink mixTablet serving and swallowing
    Avoid tabletsPowder ingredients and measuring
    Lower costCurrent cost per equal elemental amount
    Treat a health problemEvidence and clinical suitability
    Magnesium glycinate brands: compare dose, format and cost — 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. NOW Magnesium Glycinate Tablets
      Source consulted: 2026-09-21. This is a reference resource, not a claim that we conducted the studies or tested a product.
    2. Magnesium Bisglycinate
      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.
    4. Sleep Disorders and Complementary Health Approaches: Usefulness and Safety | NCCIH
      Source consulted: 2026-09-21. This is a reference resource, not a claim that we conducted the studies or tested a product.