The aim of the study was to evaluate blood serum ascorbic acid levels in patients with hepatic cirrhosis, acute and chronic pancreatitis and in the liver, heart, kidneys and lungs of rats intoxicated with CCl₄ and galactosamine. The results revealed statistically significant increases in the blood plasma ascorbic acid levels in patients with acute and chronic pancreatitis and hepatic cirrhosis. In the group of patients with chronic pancreatitis, however, the blood plasma ascorbic acid levels were not different from the controls. In the group of control rats the highest ascorbic acid levels were observed in the liver and the lowest in the heart. In the intoxicated rats with CCl₄ and galactosamine the kidneys’ ascorbic acid contents increased significantly after administration of both toxins in single doses but decreased after 3-days of administration of CCl₄. In the liver, decreased ascorbic acid contents were observed after single doses of CCl4 and galactosamine, but after the 3-day administration its contents were increased. The content of ascorbic acid in the lung increased after each of the toxins used. In the heart, ascorbic acid contents decreased considerably after single and three-day CCl₄ and galactosamine administration as well.