6. Neon yellow urine and vitamin supplements
Neon or bright yellow urine is commonly caused by excess B vitamins, especially riboflavin (vitamin B2), passing through the kidneys. Since water-soluble vitamins are not stored in the body, surplus amounts are excreted, producing a vivid yellow color.
This appearance is harmless and typically indicates recent intake of multivitamins or B-complex supplements. However, it also serves as a reminder that the kidneys are actively filtering excess compounds, underscoring the importance of not exceeding recommended dosages.
7. Urine color changes from medications
Various medications can alter urine color, independent of hydration or kidney function. For example, phenazopyridine can cause orange-red urine, rifampin may turn urine reddish, and certain laxatives or chemotherapy drugs can produce unusual shades.
It is important to inform your healthcare provider about any medications you are taking if you notice persistent changes in urine color. This helps differentiate harmless medication effects from signs of underlying pathology.
8. Kidney stones and bleeding
Kidney stones can cause bleeding in the urinary tract, which may manifest as pink, red, or cola-colored urine. Stones irritate and sometimes damage the lining of the urinary tract as they pass, leading to visible blood in the urine.
Along with hematuria, kidney stones often cause severe flank pain, nausea, and urgency to urinate. Diagnosis typically involves imaging studies like ultrasound or CT scans, and treatment ranges from pain management to procedures that break up or remove stones.
