Vitamin B12
Water-Soluble
Essential for nerve function, red blood cells, and DNA synthesis.
Key Benefits
- Nerve Function
- Red Blood Cell Formation
- DNA Synthesis
- Energy Production
- Brain Health
Food Sources
Meat
Fish
Dairy
Eggs
Fortified Foods
Nutritional Yeast
Recommended Daily Intake (RDA)
2.4 mcg/day (adults)
Adult guideline — your needs may differ. Ask a clinician for personal advice.
Deficiency Symptoms
Anemia, nerve damage, fatigue, memory problems, depression
See a healthcare professional if you have concerns.
Toxicity & Safety
Rare (water-soluble, excess excreted)
Follow label directions; avoid high-dose supplements without medical advice.