Magnesium and Vitamin B12 (Cobalamin)
Magnesium supports many of the same enzymatic and neurological pathways as B12.
Magnesium
A master mineral involved in 300+ enzyme reactions.
Vitamin B12 (Cobalamin)
The methylation and nerve-health vitamin that protects the brain and blood.
Designed to work as a pair
One is required for the other to do its job, so they belong together in a stack.
How to take them
Magnesium
- Dose
- 200–400 mg elemental magnesium per day
- Timing
- Evening for sleep support; with food to reduce GI upset
Vitamin B12 (Cobalamin)
- Dose
- 2.4 mcg RDA; 500–1,000 mcg for deficiency or vegan diets; 1,000 mcg weekly injections if malabsorption
- Timing
- Morning or any time; sublingual forms may be taken without food
Frequently asked
Can you take Magnesium and Vitamin B12 (Cobalamin) together?
Yes, they are commonly taken together. Magnesium supports many of the same enzymatic and neurological pathways as B12.
What's the best time to take Magnesium and Vitamin B12 (Cobalamin)?
Around the same time works well. Magnesium: Evening for sleep support; with food to reduce GI upset. Vitamin B12 (Cobalamin): Morning or any time; sublingual forms may be taken without food.
How do Magnesium and Vitamin B12 (Cobalamin) interact?
Cofactor: Required for the other to do its job. Magnesium supports many of the same enzymatic and neurological pathways as B12.
Related pairings
Glycine + Magnesium
A classic sleep stack: glycine lowers core body temperature while magnesium glycinate relaxes muscles and calms the nervous system.
Magnesium + Vitamin D3
Magnesium is required to convert vitamin D into its active form, so low magnesium blunts D3's benefits.
L-Arginine + Magnesium
Magnesium supports vascular smooth muscle relaxation alongside nitric oxide from arginine.
Ashwagandha + Magnesium
Commonly combined for stress relief and better sleep quality.