Neuro-Mag 144 mg by Life Extension

If your goal is clearer thinking, steadier focus, or better sleep quality, magnesium L-threonate is the form most often chosen for brain effects. It’s a fit if your Serum Magnesium or RBC Magnesium (a red blood cell test that better reflects tissue levels) is low or low-normal, if you live on a processed, low-magnesium diet, use proton pump inhibitors for heartburn, or are a high-caffeine, high-stress knowledge worker. Life Extension Neuro-Mag delivers a moderate daily amount, suited to cognitive maintenance rather than full-body repletion.

Magnesium L-threonate is bonded to threonic acid, which helps more magnesium cross the blood–brain barrier (the filter that protects the brain) compared with common salts. Higher brain magnesium supports synaptic plasticity, the brain’s ability to strengthen connections involved in memory and attention. Small human trials report improvements in working memory and executive function within 6 to 12 weeks. If you’re after bowel regularity or muscle cramp relief, other forms like magnesium citrate or glycinate tend to work better for those targets.

The suggested use is three capsules daily, with or without food. For steadier brain levels, split the dose morning and evening; if sleep is your priority, place the larger portion 1 to 2 hours before bed. The 144 mg elemental magnesium here is a maintenance-level dose; if your Vitamin D, 25-Hydroxy and Serum Magnesium are both low, you’ll often need more total magnesium from diet or a companion form like glycinate under clinician guidance.

Space magnesium at least 2 hours from antibiotics like tetracyclines and fluoroquinolones, 2 to 4 hours from levothyroxine, and away from bisphosphonates, since it can bind these drugs and reduce absorption. Significant kidney disease raises the risk of high magnesium; skip or use only with medical supervision. GI side effects are uncommon with magnesium L-threonate, but mild nausea can occur if taken on an empty stomach—food solves it in most people.