All Supplements
Vitamin B12 vs Magnesium L-Threonate
Side-by-side comparison — benefits, dosage, forms, and research.
Feature
Vitamin B12
Magnesium L-Threonate
Typical Dosage
500-1,000mcg daily
1,500-2,000mg (providing ~144mg elemental Mg)
Best Form
Methylcobalamin
Magnesium L-Threonate (Magtein)
Key Benefits
5
5
Evidence Rating
★★★★
★★★
Best Time
Morning — may be energising
Evening — has calming/sleep-promoting effects
Vitamin B12 Benefits
✓Energy production
✓Nerve function and protection
✓Red blood cell formation
✓DNA synthesis
✓May reduce homocysteine levels
Magnesium L-Threonate Benefits
✓Crosses blood-brain barrier
✓May improve memory and learning
✓Sleep quality improvement
✓Brain magnesium levels
✓Potential neuroprotective effects
Can You Take Both Together?
In most cases, Vitamin B12 and Magnesium L-Threonate can be taken together safely. However, always check the interactions section of each supplement and consult a healthcare professional if you take medication.
Which Should You Choose?
Choose Vitamin B12 if your primary goal is: energy production. Choose Magnesium L-Threonate if your primary goal is: crosses blood-brain barrier. Many people take both as they target different aspects of health.
Disclaimer: This comparison is for educational purposes only. Always consult a healthcare professional before starting any supplement.