Nature Made Magnesium Oxide 400mg vs Life Extension Neuro-Mag Magnesium L-Threonate

Side-by-side AI analysis based on real user reviews from Reddit, Amazon, YouTube & more.

Score Comparison

Nature Made Magnesium Oxide 400mg
Life Extension Neuro-Mag Ma...
Nature Made Magnesium Oxide 400mg
Nature Made
Life Extension Neuro-Mag Ma...
Life Extension
Overall Score 4 7
Effectiveness 4/10 7/10
Best
Ingredient Quality 4/10 10/10
Best
Value for Money 5/10
Best
4/10
Side Effects 4/10 9/10
Best
Certifications 6/10 7/10
Best
Best Price £18.99
Cheapest
£37.90
Form Softgels Capsules
Dose 400mg 2000mg Magtein (144mg elemental Mg)
Third-Party Tested ✓ Yes ✓ Yes
Reviews Analysed 3 3

Nature Made Magnesium Oxide 400mg

Pros

  • +Very cheap — lowest cost per bottle
  • +High label dose (400mg)
  • +USP Verified for quality assurance
  • +150 servings per bottle

Cons

  • -Extremely poor bioavailability (4-5%)
  • -Contains titanium dioxide (banned in EU food)
  • -Significant GI side effects — laxative effect

Best For

Those on a very tight budget People who specifically want laxative effect Short-term use when nothing else is available
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Life Extension Neuro-Mag Magnesi...

Pros

  • +Only magnesium form shown to cross the blood-brain barrier
  • +Patented Magtein — backed by MIT research
  • +Targets cognitive function and memory
  • +Clean excipient profile

Cons

  • -Very expensive — nearly 1 GBP per day
  • -Only 144mg elemental magnesium per serving
  • -3 capsules per serving is inconvenient

Best For

Cognitive support and brain health Those experiencing brain fog or memory issues Nootropic stack users
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AI

AI Comparison Analysis

Nature Made Magnesium Oxide 400mg vs Life Extension Neuro-Mag Magnesium L-Threonate

Nature Made Magnesium Oxide 400mg: Nature Made Magnesium Oxide is the budget option — cheap, high-dose on paper, but with the worst bioavailability of any magnesium form at roughly 4-5% absorption. The ingredient list includes titanium dioxide (banned in EU food since 2022), soy, and gelatin. It works as a laxative but is a poor choice for addressing magnesium deficiency or improving sleep, muscle function, or stress.

Scores: effectiveness: 4/10, ingredient_quality: 4/10, value_for_money: 5/10, side_effects: 4/10, certifications: 6/10, overall: 4/10

Life Extension Neuro-Mag Magnesium L-Threonate: Life Extension Neuro-Mag features the patented Magtein form, the only magnesium shown in published research to cross the blood-brain barrier. Developed by MIT scientists, it targets cognitive function rather than general magnesium deficiency. The trade-off is cost: at 3 capsules per serving with only 30 servings per bottle, it is the most expensive magnesium supplement in this comparison by a wide margin.

Scores: effectiveness: 7/10, ingredient_quality: 10/10, value_for_money: 4/10, side_effects: 9/10, certifications: 7/10, overall: 7/10

Disclaimer: AIScored provides AI-generated comparisons based on publicly available reviews. This is not medical advice. Affiliate links may earn us a commission at no extra cost to you.