What is Vitamin B12? Uses, warnings & side effects

Updated May 14, 2025  •  Published Dec 30, 2020

Vitamin B12 overview

BRAND NAMES:

Generic Names:

  • Vitamin B-12

Uses:

Therapeutic Classes:

Forms:

How it’s taken:

What is Vitamin B12 used for?

What form(s) does Vitamin B12 come in?

What are common Vitamin B12 dosages?

  • Bottle 100 Tablets

  • Bottle 100 Lozenge

  • Bottle 50 Tablets

  • Bottle 60 Tablets

  • Bottle 130 Tablets

  • Bottle 200 Tablets

  • Bottle 50 Tablets Sublingual

  • Bottle 60 Tablets Sublingual

  • Bottle 100 Tablets Sublingual

  • Bottle 30 Tablets Disintegrating

  • Bottle 100 Tablets Disintegrating

  • Bottle 110 Tablets Sublingual

  • Bottle 30 Tablets Sublingual

  • Bottle 52ML of 3000MCG/ML

  • Tablet 500MCG

  • Tablet 1000MCG

  • Bottle 100 Lozenge

Vitamin B12 images - What does Vitamin B12 look like?

  • Vitamin B-12
    100 tablets bottle

  • Vitamin B-12
    100 tablets disintegrating bottle

  • Vitamin B-12
    130 tablets bottle

  • Vitamin B-12
    200 tablets bottle

  • Vitamin B-12
    50 tablets bottle

  • Vitamin B-12
    1000mcg tablet

How to take Vitamin B12

What to do if you miss a dose of Vitamin B12

Vitamin B12 contraindications - Who shouldn't take Vitamin B12?

Vitamin B12 warnings

Vitamin B12 interactions & what to avoid when taking Vitamin B12