Healthy Living

Vitamin B Complex


General description

Vitamin B complex contains the full complement of vitamins found in the B group; these are listed below.

B vitamins are water-soluble. This means they are dissolved in water and your body doesn't store them. The B vitamins are related to each other and work closely in your body. For this reason, having all the B vitamins in your body helps your body work better.

B vitamins are found in many foods. So most people don't have a high risk of developing a deficiency if they follow a balanced diet.

There are many B complex supplements. They all have different amounts of the common B vitamins. Some also contain vitamin C and bioflavonoids. These are often called B complex with C.

The B complex includes:

  • Thiamin (B-1)
  • Riboflavin (B-2)
  • Niacin (B-3)
  • Pantothenic acid (B-5)
  • Pyridoxine (B-6)
  • Folic acid (B-9)
  • Cobalamin (B-12)

These are often also included as part of the B complex:

  • Biotin (vitamin H)
  • Choline
  • Inositol
  • Para-aminobenzoic acid (PABA)

See each B vitamin for more information.


Unsubstantiated claims

There may be claims for use of vitamin B complex that haven't yet been proven through research.

Taking a B complex supplement may help increase energy levels, reduce stress, boost mood, and reduce symptoms of anxiety or depression. Always talk with your doctor before taking a supplement.

Author: Ignite Staff

Online Medical Reviewer: Brittany Poulson MDA RDN CD CDE

Online Medical Reviewer: Stefania Manetti

Date Last Reviewed: 09/01/2025

Find a Provider

View Our Directory

Find a Location

View Our Practices
Related Articles
Read article
Wellness
Niacin

Learn about the medical uses, claims, and side effects of niacin.

Read article
Wellness
Alpha Lipoic Acid

Learn about ALA's claims, dosage, and side effects.

Read article
Wellness
Iodine

Learn about the medical uses, claims, and side effects of iodine.

Read article
Wellness
Pantothenic Acid

Learn about the medical uses, claims, and side effects of pantothenic acid.