Vitamin B complex is a group of at least 13 vitamins usually named as B1, B2, B3 …etc. But to prevent confusion, their chemical names are now frequently used. The various members of the vitamin B complex are not related either chemically or physiologically yet they have many things in common. Diseases caused by the various vitamins of this group summarizes below:
| S.no |
Vitamin complex |
Deficiency diseases |
| 1. |
Vitamin B1 |
Beri-beri (paralysis of legs, normal weakness) and lack of appetite. |
| 2. |
Vitamin B2 or riboflavin |
Stunted growth, ulcers in mouth, skin dryness in corners of mouth and lips. |
| 3. |
Vitamin B3 (it is made up of three substance pyridoxal, pyridoxine and pyridoxine) |
Anaemia (lack of blood), nervous system and normal weakness body. |
| 4. |
Vitamin B12 or Cyano-cobalamine |
Pernicious Anaemia, loss of consciousness and swelling in the face. |
