“…However, several studies have shown that modest increase in glucose level in niacin treated patients could be easily counteracted by adjusting the diet, exercise, and antidiabetic medications (reviewed in [54,57]). Hepatotoxicity, as assessed by elevations in transaminases, in some patients is another adverse event seen in patients taking niacin [53,58,59]. Although increased levels of alanine aminotransferase and/or aspartate aminotransferase were observed in some patients taking higher concentrations of niacin as compared to placebo, the levels of these enzymes were not greater than 3 times the upper limit in majority of the patients [57,60].…”