9.6.2 Vitamin B group

Prescribing Notes

  • Deficiency of the B vitamins, with the exception of vitamin B12, is rare in the UK and is usually treated by preparations containing thiamine (B1), riboflavin (B2), and nicotinamide.
  • Oral vitamin B complex preparations are considered by the BNF to be ‘less suitable for prescribing’. They should not be considered as drugs of first choice.
  • For vitamin B supplementation in alcohol dependence, see section 4.10.
  • Refeeding syndrome describes a potential fatal medical condition that may affect malnourished and /or ill patients in response to an inappropriately high calorie intake. This occurs following the introduction of nutritional support, either orally or by enteral or parenteral feeding. Patients may be discharged on a regimen of vitamins, usually a combination of thiamine, vitamin B compound strong and a multivitamin for 10 days.