Mechanical What Your Urine Color Says About Your Health Clear Urine: Indicates overhydration, which may dilute electrolytes; reduce water intake slightly. Pale Yellow: Reflects optimal hydration, signaling a healthy balance of Bright yellow urine: Colors, changes, and causes PDF] Quantification of chromatographic effects of vitamin B supplementation in urine and implications for hydration assessment. Semantic Scholar B12 Shots: Benefits, Uses, Safety, Cost & How They Work How to judge the absorption of vitamin B12