Vitamin B Complex and Exercise Performance in Healthy Humans: A Functional Anti-Fatigue RCT Abstract Background B vitamins play a crucial role in maintaining fundamental cellular functions and various essential m... Energy Vitamin B12 Vitamin B12 and Cognition, Depression, and Fatigue: Systematic Review, Meta-Analysis & Regression Abstract Background Vitamin $\text{B}_{12}$ is often used to improve cognitive function, depressive symptoms, and fatigu... Mood Energy Cognition Vitamin B12