excretion Flashcards
1
Q
how is choline excreted?
A
unabsorbed choline left in feces, excreted in urine
2
Q
how is b12 excreted?
A
bile/stool
3
Q
biotin excretion?
A
metabolized as inactive metabolites, excreted as free biotin or biotin sulfoxide in urine and pasta, accelerated during pregnancy, some anti-eplileptic drugs
4
Q
niacin excretion?
A
little loss of niacin in urine (modest intake), vitamin actively reabsorbed by kidney
