3β-Ursodeoxycholic acid (Isoursodeoxycholic acid) is a bile acid that exhibits good tolerance and good intestinal absorption when administered orally.

N-methylnicotinamide is a metabolite of niacin (or nicotinamide) and is commonly found in human urine. However low levels of urinary excretion of N-methylnicotinamide indicates niacin deficiency. In patients with liver cirrhosis nicotinamide methylation is increased leading to a rise in urinary N-methylnicotinamide. N-methylnicotinamide has been found to be a microbial metabolite.

7-Hydroxy-6-acetyl-2 methylchromone