B vitamin complex

B vitamin complex is a nutritional supplement containing a variety of different B vitamins.

Evidence
PMC1297139

ME/CFS
A small study of chronic fatigue syndrome patients found below normal levels of a number of B vitamins, including vitamin B6, B12 and folic acid.

Notable studies
[PMC1297139 Vitamin B status in patients with chronic fatigue syndrome]

Learn more

 * Wikipedia