Vitamin question

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  • #1
lisab
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I take a multi-vitamin supplement about 5 days a week. What is it in the pill that makes my urine turn bright, bright yellow? It looks almost fluorescent sometimes!
 

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  • #2
Moonbear
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I take a multi-vitamin supplement about 5 days a week. What is it in the pill that makes my urine turn bright, bright yellow? It looks almost fluorescent sometimes!
One of the B-vitamins...IIRC, it's the folate.
 
  • #3
chemisttree
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Does folate have a visible chromaphore? I always thought that color was due to the bright yellow riboflavin (B2).
 
  • #4
jim mcnamara
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pterins (folates as cryptochromes in leaves) have been shown to have max absorption at 380nm. It would give an orange-ish color I presume. Assuming folates in urine are similar.

http://mplant.oxfordjournals.org/cgi/content/full/1/1/68 [Broken]

However I always thought riboflavin was the major color culprit, too.
 
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  • #5
Evo
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When I take a pill high in iron, the excess iron turns my urine dark yellow or orange.
 
  • #6
Moonbear
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Does folate have a visible chromaphore? I always thought that color was due to the bright yellow riboflavin (B2).
Could be...I was certain on the B vitamin part, but since I've never seen any of the B vitamins individually, just as a complex, I could very well be wrong on which one it is that's the yellow culprit.

Edit: Yep, digging around, it is B-2. Even found an ancient archived thread here on it (but am not providing a link to it because it also contained some old crackpottery we wouldn't allow under current guidelines). My apologies for the misinformation about it being folate.
 
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