riboflavin
... that consuming the vitamin riboflavin in large amounts will cause urine to have a bright yellow color?
... that consuming the vitamin <b id="mwYw"><a href="./Riboflavin" id="mwZA" rel="mw:WikiLink" title="Riboflavin">riboflavin</a></b> in large amounts will cause <a href="./Urine" id="mwZQ" rel="mw:WikiLink" title="Urine">urine</a> to have a bright yellow color?