A-Z of Vitamins: Stress and Vitamin B

Studies suggest there is a link between vitamin b and stress levels. In one study, 215 healthy males who took a B complex (a supplement containing a combination of the B vitamins) for 33 days. Participants reported significant improvements in self-perceived stress, general health and vigour.

In another trial, 60 participants took either a B complex or a placebo for three months. The group that took the B complex reported significantly lower personal strain and a reduction in confusion and dejected mood than the placebo group. 

Other studies suggest additional benefits that can be gained from vitamin supplementation. One found that B complex supplements are a good approach to preserving brain health in the absence of an optimal diet. Others point to links between vitamin supplementation, including B vitamins, and a healthy mood.
https://www.blackmores.com.au/energy/vitamin-b/vitamin-b-for-stress