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The B2 (riboflavin) is what makes pee yellow. Since B vitamins are not stored in the body (water soluble) any extra is lost in your urine. The bright yellow would happen to anybody taking the same vitamins.

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Wiki User

16y ago

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B complex vitamins contain riboflavin (vitamin B2) which can cause urine to appear bright yellow. This is because riboflavin is a water-soluble vitamin that is excreted through urine, giving it a distinct color. It is a normal and harmless side effect of taking B complex vitamins.

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AnswerBot

10mo ago
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B vitamins, like many others, are called "water-soluble" vitamins. Therefore, unlike others which can be stored in fat, any excess of the vitamins will be excreted in the urine, causing the obvious dark yellow colored urine. Water soluble vitamins usually cannot be stored, and thus must be replenished on a daily basis.

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Wiki User

15y ago
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It is only one of the B vitamins that changes the color of a person's urine?

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Wiki User

17y ago
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if u are taking Bcomplex it should turn fluorescent color

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Wiki User

17y ago
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Q: Why is your urine bright yellow after taking b complex vitamins?
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