Vitamin
Vitamin B12
Also known as: Methylcobalamin
An essential vitamin that supports nerve health, energy production, and cognitive function.
KÖGN Health grades Vitamin B12 as A+ (Strong evidence) and rates it 4.6 out of 5.
Last reviewed · June 2026
Primary effects
- Increased energy
- Improved cognition
- Reduced fatigue
How it works
Supports myelin formation and red blood cell production, enhancing brain energy and function.
Overview
Vitamin B12 is essential for neurological health and energy metabolism. Its active form, methylcobalamin, is directly involved in nerve function and brain energy production. Deficiency can lead to significant cognitive and neurological impairment, making it one of the most important vitamins for brain health. Supplementation is particularly important for individuals with low dietary intake, such as vegans.
Related ingredients
Graded entries that target the same cognitive goals.
Categories
Educational information, not medical advice. The evidence grade is KÖGN’s editorial assessment of published research, not a health claim. Speak to a qualified clinician before changing what you take.