Liver cirrhosis is a catabolic disease associated with a high incidence of insulin resistance and diabetes mellitus. PBEF/Nampt/visfatin has been characterized as a novel adipokine with a potential role in glucose metabolism and NAD generation. We studied plasma levels and metabolic relevance of visfatin in 19 patients with cirrhosis and 19 BMI, age and sex-matched controls. In addition, hepatic mRNA expression was assessed by qPCR in livers of 7 patients with cirrhosis and 4 controls. Circulating visfatin was 78% lower in cirrhotics (p<0.001) and decreased with worsening of the clinical stage of liver disease. Hepatic visfatin secretion decreased with clinical stage (p<0.05) and reduced liver function (p=0.01). Consistent with these data, hepatic visfatin mRNA expression was significantly lower in cirrhotic livers (p<0.05). Circulating visfatin in cirrhosis was correlated with body cell mass (r=0.72, p<0.01) as well as with body fat mass (r=0.53, p<0.05), but not with plasma glucose, insulin, the degree of insulin resistance or whole body glucose oxidation rates. Higher visfatin levels were associated with higher hepatic glucose production (r=0.53, p<0.05) and also with a higher arterial ketone body ratio (KBR) (r=0.48, p<0.05), an indicator of increased hepatic NAD generation. In conclusion, circulating visfatin levels are significantly decreased in liver cirrhosis presumably due to decreased hepatic expression and production. Plasma visfatin in cirrhosis is not associated with insulin resistance, but correlates with hepatic glucose production and the arterial KBR, indicating a potential link between the NAD generating properties of visfatin and metabolism.