Is This Supplement Legit

Ranked products

Best Magnesium products

Rankings blend total score with mode-specific emphasis (value, transparency, certs, cleaner labels). Weak totals and soft safety scores are damped so one bright lane cannot rescue a bad overall profile.

What matters here

Form matters: glycinate, citrate, and similar forms often fit different goals than oxide-heavy budget tabs. Compare serving elemental magnesium, not just milligrams of salt.

Overall bestBest valueMost transparentBest certifiedCleanest label

Top picks

#1

Cleanest label profile

NOW Foods Magnesium

200 mg · 250 servings

NOW Foods

72/ 100

Overall

  • Serving size and count are explicit enough to sanity-check cost per dose.
  • Few moving parts on the label - easier to audit than a proprietary stack.
  • Brand is flagged as more transparent in our dataset.

Upper tier for this category in our model, without running away on every lane.

Few structured label lines on file for this SKU - treat “clean” ranking as provisional.

Full reviewCompareBuy options
#2

Strong runner-up

NOW Foods Magnesium Capsules

30 servings

NOW Foods

72/ 100

Overall

  • Serving size and count are explicit enough to sanity-check cost per dose.
  • Few moving parts on the label - easier to audit than a proprietary stack.
  • Brand is flagged as more transparent in our dataset.

Upper tier for this category in our model, without running away on every lane.

Few structured label lines on file for this SKU - treat “clean” ranking as provisional.

Full reviewCompareBuy options
#3

Strong runner-up

NOW Foods Magnesium Capsules

30 servings

NOW Foods

72/ 100

Overall

  • Serving size and count are explicit enough to sanity-check cost per dose.
  • Few moving parts on the label - easier to audit than a proprietary stack.
  • Brand is flagged as more transparent in our dataset.

Upper tier for this category in our model, without running away on every lane.

Few structured label lines on file for this SKU - treat “clean” ranking as provisional.

Full reviewCompareBuy options

Decision ladder - how to pick

Four archetypes from the same deterministic model: overall leader, value leader, cheapest acceptable pick with a score floor, and a premium upgrade lane.

Cheapest acceptable

Not enough on-file SKUs to fill this slot.

Do not buy blind here

  • Proprietary blends hide doses - skip them when you need gram-level certainty.
  • Cheap magnesium oxide and similar salts score weaker on form heuristics than glycinate, citrate, or malate.
  • Fish oil and purity-heavy categories reward third-party testing - look for it on the label.
  • If budget matters, run the value ranking mode before you checkout.

Full rankings

  1. Cleanest label profileLimited proofSolid pick

    NOW Foods Magnesium

    NOW Foods

    Upper tier for this category in our model, without running away on every lane.

    Few structured label lines on file for this SKU - treat “clean” ranking as provisional.

    Pros

    • · Serving size and count are explicit enough to sanity-check cost per dose.
    • · Few moving parts on the label - easier to audit than a proprietary stack.

    Cons

    • · Missing reliable price data - value score is a neutral placeholder.
    Full reviewCompareBuy options
    72/ 100

    Overall

  2. Strong runner-upLimited proofSolid pick

    NOW Foods Magnesium Capsules

    NOW Foods

    Upper tier for this category in our model, without running away on every lane.

    Few structured label lines on file for this SKU - treat “clean” ranking as provisional.

    Pros

    • · Serving size and count are explicit enough to sanity-check cost per dose.
    • · Few moving parts on the label - easier to audit than a proprietary stack.

    Cons

    • · Missing reliable price data - value score is a neutral placeholder.
    Full reviewCompareBuy options
    72/ 100

    Overall

  3. Strong runner-upLimited proofSolid pick

    NOW Foods Magnesium Capsules

    NOW Foods

    Upper tier for this category in our model, without running away on every lane.

    Few structured label lines on file for this SKU - treat “clean” ranking as provisional.

    Pros

    • · Serving size and count are explicit enough to sanity-check cost per dose.
    • · Few moving parts on the label - easier to audit than a proprietary stack.

    Cons

    • · Missing reliable price data - value score is a neutral placeholder.
    Full reviewCompareBuy options
    72/ 100

    Overall

  4. Solid pickLimited proofSolid pick

    NOW Foods Magnesium Tablets

    NOW Foods

    Around the category midpoint - compare pros/cons before you buy.

    Few structured label lines on file for this SKU - treat “clean” ranking as provisional.

    Pros

    • · Serving size and count are explicit enough to sanity-check cost per dose.
    • · Few moving parts on the label - easier to audit than a proprietary stack.

    Cons

    • · Missing reliable price data - value score is a neutral placeholder.
    Full reviewCompareBuy options
    72/ 100

    Overall

  5. Solid pickLimited proofSolid pick

    NOW Foods Magnesium Capsules

    NOW Foods

    Around the category midpoint - compare pros/cons before you buy.

    Few structured label lines on file for this SKU - treat “clean” ranking as provisional.

    Pros

    • · Serving size and count are explicit enough to sanity-check cost per dose.
    • · Few moving parts on the label - easier to audit than a proprietary stack.

    Cons

    • · Missing reliable price data - value score is a neutral placeholder.
    Full reviewCompareBuy options
    72/ 100

    Overall

  6. Solid pickLimited proofSolid but basic

    BulkSupplements Magnesium Capsules

    BulkSupplements

    Around the category midpoint - compare pros/cons before you buy.

    Few structured label lines on file for this SKU - treat “clean” ranking as provisional.

    Pros

    • · Serving size and count are explicit enough to sanity-check cost per dose.
    • · Few moving parts on the label - easier to audit than a proprietary stack.

    Cons

    • · Transparency lane scored low - expect to verify certs and COAs yourself.
    Full reviewCompareBuy options
    69/ 100

    Overall

  7. Solid pickLimited proofSolid but basic

    BulkSupplements Magnesium Powder

    BulkSupplements

    Around the category midpoint - compare pros/cons before you buy.

    Few structured label lines on file for this SKU - treat “clean” ranking as provisional.

    Pros

    • · Serving size and count are explicit enough to sanity-check cost per dose.
    • · Few moving parts on the label - easier to audit than a proprietary stack.

    Cons

    • · Transparency lane scored low - expect to verify certs and COAs yourself.
    Full reviewCompareBuy options
    69/ 100

    Overall

  8. Solid pickLimited proofSolid but basic

    BulkSupplements Magnesium Powder

    BulkSupplements

    Around the category midpoint - compare pros/cons before you buy.

    Few structured label lines on file for this SKU - treat “clean” ranking as provisional.

    Pros

    • · Serving size and count are explicit enough to sanity-check cost per dose.
    • · Few moving parts on the label - easier to audit than a proprietary stack.

    Cons

    • · Transparency lane scored low - expect to verify certs and COAs yourself.
    Full reviewCompareBuy options
    69/ 100

    Overall

  9. Solid pickLimited proofSolid but basic

    BulkSupplements Magnesium Softgels

    BulkSupplements

    Around the category midpoint - compare pros/cons before you buy.

    Few structured label lines on file for this SKU - treat “clean” ranking as provisional.

    Pros

    • · Serving size and count are explicit enough to sanity-check cost per dose.
    • · Few moving parts on the label - easier to audit than a proprietary stack.

    Cons

    • · Transparency lane scored low - expect to verify certs and COAs yourself.
    Full reviewCompareBuy options
    69/ 100

    Overall

  10. Solid pickLimited proofSolid but basic

    BulkSupplements Magnesium Capsules

    BulkSupplements

    Around the category midpoint - compare pros/cons before you buy.

    Few structured label lines on file for this SKU - treat “clean” ranking as provisional.

    Pros

    • · Serving size and count are explicit enough to sanity-check cost per dose.
    • · Few moving parts on the label - easier to audit than a proprietary stack.

    Cons

    • · Transparency lane scored low - expect to verify certs and COAs yourself.
    Full reviewCompareBuy options
    69/ 100

    Overall

  11. Solid pickLimited proofSolid but basic

    BulkSupplements Magnesium Powder

    BulkSupplements

    Around the category midpoint - compare pros/cons before you buy.

    Few structured label lines on file for this SKU - treat “clean” ranking as provisional.

    Pros

    • · Serving size and count are explicit enough to sanity-check cost per dose.
    • · Few moving parts on the label - easier to audit than a proprietary stack.

    Cons

    • · Transparency lane scored low - expect to verify certs and COAs yourself.
    Full reviewCompareBuy options
    69/ 100

    Overall

  12. Solid pickLimited proofSolid but basic

    BulkSupplements Magnesium Capsules

    BulkSupplements

    Around the category midpoint - compare pros/cons before you buy.

    Few structured label lines on file for this SKU - treat “clean” ranking as provisional.

    Pros

    • · Serving size and count are explicit enough to sanity-check cost per dose.
    • · Few moving parts on the label - easier to audit than a proprietary stack.

    Cons

    • · Transparency lane scored low - expect to verify certs and COAs yourself.
    Full reviewCompareBuy options
    69/ 100

    Overall

  13. Solid pickLimited proofSolid but basic

    BulkSupplements Magnesium Powder

    BulkSupplements

    Around the category midpoint - compare pros/cons before you buy.

    Few structured label lines on file for this SKU - treat “clean” ranking as provisional.

    Pros

    • · Serving size and count are explicit enough to sanity-check cost per dose.
    • · Few moving parts on the label - easier to audit than a proprietary stack.

    Cons

    • · Transparency lane scored low - expect to verify certs and COAs yourself.
    Full reviewCompareBuy options
    69/ 100

    Overall

  14. Solid pickLimited proofSolid but basic

    Life Extension Magnesium Capsules

    Life Extension

    Around the category midpoint - compare pros/cons before you buy.

    Few structured label lines on file for this SKU - treat “clean” ranking as provisional.

    Pros

    • · Serving size and count are explicit enough to sanity-check cost per dose.
    • · Few moving parts on the label - easier to audit than a proprietary stack.

    Cons

    • · Transparency lane scored low - expect to verify certs and COAs yourself.
    Full reviewCompareBuy options
    69/ 100

    Overall

  15. Solid pickLimited proofSolid but basic

    Nature Made Magnesium Softgels

    Nature Made

    Around the category midpoint - compare pros/cons before you buy.

    Few structured label lines on file for this SKU - treat “clean” ranking as provisional.

    Pros

    • · Serving size and count are explicit enough to sanity-check cost per dose.
    • · Few moving parts on the label - easier to audit than a proprietary stack.

    Cons

    • · Transparency lane scored low - expect to verify certs and COAs yourself.
    Full reviewCompareBuy options
    69/ 100

    Overall

  16. Solid pickLimited proofSolid but basic

    Nature Made Magnesium Tablets

    Nature Made

    Around the category midpoint - compare pros/cons before you buy.

    Few structured label lines on file for this SKU - treat “clean” ranking as provisional.

    Pros

    • · Serving size and count are explicit enough to sanity-check cost per dose.
    • · Few moving parts on the label - easier to audit than a proprietary stack.

    Cons

    • · Transparency lane scored low - expect to verify certs and COAs yourself.
    Full reviewCompareBuy options
    69/ 100

    Overall

  17. Solid pickLimited proofSolid but basic

    Sports Research Magnesium

    Sports Research

    Around the category midpoint - compare pros/cons before you buy.

    Few structured label lines on file for this SKU - treat “clean” ranking as provisional.

    Pros

    • · Serving size and count are explicit enough to sanity-check cost per dose.
    • · Few moving parts on the label - easier to audit than a proprietary stack.

    Cons

    • · Transparency lane scored low - expect to verify certs and COAs yourself.
    Full reviewCompareBuy options
    69/ 100

    Overall

  18. Solid pickLimited proofTransparency gap

    BulkSupplements Magnesium Powder

    BulkSupplements

    Baseline placement from the rubric - use the review and compares to see tradeoffs.

    Few structured label lines on file for this SKU - treat “clean” ranking as provisional.

    Pros

    • · Few moving parts on the label - easier to audit than a proprietary stack.
    • · Tied to a high-scoring ingredient hub in our model.

    Cons

    • · Transparency lane scored low - expect to verify certs and COAs yourself.
    Full reviewCompareBuy options
    67/ 100

    Overall

What actually matters

Form matters: glycinate, citrate, and similar forms often fit different goals than oxide-heavy budget tabs. Compare serving elemental magnesium, not just milligrams of salt.

Ingredient hub

Tighter questions, same category

Budget caps and cleaner-label sorts when our file supports them.

Compare top picks

Side-by-side on the same score lanes as product reviews - including additive and label-clarity splits.

Better for different buyer types

Pulled from this category only - deterministic picks on one dimension at a time.

How these ranks work

We reuse the v1 product rubric: ingredient fit, dose plausibility, formula quality, additive/excipient burden blended with label-clarity, transparency, value (when price data exists), and a conservative safety floor. Rank reasons are generated from score shape - no hand-waved editorial winners.

Read full methodology · How we rank products