Nutrition
Riboflavin Yellow Urine Color
Riboflavin yellow urine color is bright pigment from B2 supplements—often mistaken for dehydration when fluids are already adequate.
Riboflavin yellow urine color comes from vitamin B2 in multivitamins, fortified cereals, and some sports drinks—fluorescent yellow that looks like dehydration but reflects excess pigment excreted, not necessarily fluid deficit. High-dose B-complex can mask true concentrate if you ignore timing.
Log supplement timing separately from urine checks.
Common questions
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Should you drink more water when urine is neon from vitamins?
Only if thirst, weight loss after training, or dark morning urine also point low—not from color alone. Track supplement dose and first void before changing fluid targets.
Related terms
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