B Vitamin Complex

Does b vitamin complex work?

Overall Effectiveness Rating for B Vitamin Complex

The overall effectiveness rating for b vitamin complex is 2.8 out of 3. This rating means there is ample evidence that using b vitamin complex will lead to positive results.

Overall Confidence Rating for B Vitamin Complex

There are 2 studies in the database on b vitamin complex; the confidence rating is 27. A score above 80 means the effectiveness rating for this supplement is reliable. A score under 80 means there is insufficient evidence to ensure a reliable effectiveness rating. Note, this rating is for b vitamin complex as a whole. There are also individual ratings for the claims below.

Individual Claims

The overall ratings above do no necessarily reflect each claim about b vitamin complex. Individual claims can have higher or lower ratings. For example, some supplements may have a lot of backing for one claim, but be completely useless for another. Click on claims below for more information.

Performance Claims Effectiveness Rating Confidence Rating
increase alertness

Mental Health Claims Effectiveness Rating Confidence Rating
improve cognitive ability
decrease stress


Title of Study
Effects of high-dose B vitamin complex with vitamin C and minerals on subjective mood and performance in healthy males
Effects of multivitamin, mineral and herbal supplement on cognition in younger adults and the contribution of B group vitamins