About 4,650,000 results
Open links in new tab
  1. Vitamin B12: Overview, Uses, Side Effects, Precautions ... - WebMD

    Learn more about Vitamin B12 uses, effectiveness, possible side effects, interactions, dosage, user ratings and products that contain Vitamin B12.

  2. Vitamin B-12 - Mayo Clinic

    Aug 13, 2025 · When taken at recommended doses, vitamin B-12 supplements are generally considered safe. The recommended daily amount of vitamin B-12 for adults is 2.4 mcg and 10 to 12 mcg for …

  3. Vitamin B12 - Consumer - Office of Dietary Supplements - Vitamin B12

    Vitamin B12 helps keep nerve and blood cells healthy. Learn how much you need, good sources, deficiency symptoms, and health effects here.

  4. 9 Best Vitamin B12 Supplements - Healthline

    Nov 21, 2025 · Here we review the best B12 supplements on the market and discuss the importance of this nutrient, for everything from blood and nerve health to your DNA creation.

  5. Vitamin B12: Uses & Interactions - Cleveland Clinic

    Vitamin B12 is a medication that prevents and treats low vitamin B12 levels in your body. Vitamin B12 maintains the health of your nervous system and red blood cells.

  6. Vitamin B12 - Target

    Discover a range of Vitamin B12 supplements at Target, including Nature Made, up&up™, and Pure Encapsulations. Free shipping on orders $35+.

  7. Best vitamin B12 supplements 2026 - tried and tested - BBC Good Food

    Nov 13, 2025 · Good Food reviews the best vitamin B12 supplements for energy and nerve health, highlighting options for plant-based diets and tips for safe, effective use.

  8. Cyanocobalamin (Vitamin B12): MedlinePlus Drug Information

    Cyanocobalamin (Vitamin B12): learn about side effects, dosage, special precautions, and more on MedlinePlus

  9. The best vitamin B12 supplements of 2025, according to dietitians

    Sep 5, 2025 · To find the best vitamin B12 supplements, I spoke with three of my fellow registered dietitians about the different types of vitamin B12 and what to look for when browsing the supplement...

  10. Oral Cyanocobalamin (Vitamin B-12 Pill): Side Effects & Dosage

    Oral cyanocobalamin (Vitamin B12) is prescribed to prevent or treat vitamin B12 deficiency and to treat hyperhomocysteinemia. Common side effects of cyanocobalamin include joint pain, dizziness, …