Product Label

Life Extension Neuro-Mag Magnesium L-Threonate

Brand: Life Extension · Form: CAPSULE [E0159]

Our assessment

The evidence shows that Life Extension Neuro-Mag Magnesium L-Threonate is a targeted supplement designed to support brain health, but the specific data provided focuses on the ingredient calcium, not magnesium. We cannot confirm the benefits of this specific magnesium form from the available data. For calcium, which is a different mineral, the data supports its role in bone mineralization and neuromuscular relaxation [NIH ODS].

How it works

Think of calcium as a structural builder for your bones and a signal regulator for your nerves. It supports bone density and mineral deposition, and also helps your muscles relax and your nerves send signals properly [NIH ODS]. For the specific magnesium L-threonate in this product, detailed mechanism data is not available.

Safety profile

FDA received a total of 592,059 adverse event reports for all dietary supplements. For calcium specifically, high intakes may increase the risk of heart disease and prostate cancer. High blood and urine levels can cause poor muscle tone, poor kidney function, low phosphate levels, constipation, nausea, weight loss, extreme tiredness, frequent need to urinate, abnormal heart rhythms, and a high risk of death from heart disease [NIH ODS]. Data on side effects specific to this product is not available.

Our recommendation

We recommend you consult with your healthcare provider before starting this supplement, as the data provided does not include specific benefits or risks for magnesium L-threonate. If you are considering a calcium supplement, be aware it can reduce absorption of medications like bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS]. A personalized assessment is essential for safe and effective use.

AI-assisted analysis. Data sourced from NIH DSLD.

Supplement Facts

BrandLife Extension
Serving Size
Contents90.0 Vegetarian Capsule(s)
Market StatusOff Market

How to Read This Label

Supplement labels contain several key sections regulated by the FDA:

  • Serving Size — The recommended amount per dose. Always check this — some products require multiple capsules per serving.
  • Amount Per Serving — Shows the quantity of each nutrient in the product, typically in IU (International Units), mg (milligrams), or mcg (micrograms).
  • % Daily Value (%DV) — Indicates how much a nutrient in a serving contributes to a daily diet. 5% DV or less is low; 20% DV or more is high.
  • Other Ingredients — Lists inactive ingredients like fillers, binders, and capsule materials (e.g., gelatin, cellulose, magnesium stearate).
  • Suggested Use — The manufacturer's recommended directions for taking the supplement, including timing and dosage.

Source: FDA Dietary Supplement Labeling Guide

Original Label

View Full DSLD Label (PDF)

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