The present study aims to investigate the therapeutic and protective effects of ellagic acid (EA) on the toxicity of the liver induced by D-Galactosamine (D-GaIN) in rats. With this in mind, the rats were categorized into five groups. The study groups were given saline, 0.2 % dimethyl sulfoxide, D-GaIN, EA plus D-GaIN and D-GaIN plus EA, respectively. In the group given D-GaIN, the following transmission electron microscopic and light microscopic results were found: degenerative changes in the liver tissue, significant decreased in the number of activated Bcl-2, while increased in the number of Bax and caspase-3-positive hepatocytes, a significantly increase in levels of the activities of biochemistry markers (serum alanine transaminase (ALT), aspartate transaminase (AST) and alkaline phosphatase (ALP)). In contrast, in the groups given D-GaIN and EA, a decrease in the damage of the liver tissue, a significant decrease activated Bax and caspase-3-positive hepatocytes, while increase in the number of Bcl-2 positive hepatocytes, a decrease in the biochemistry markers levels were found. Group 4, given EA before D-GaIN, showed better results when compared to Group 5, given EA after D-GaIN, in terms of histopathological and biochemical values. In conclusion, EA might play an important role in repairing D-GaIN-induced liver damage both as a protective and a therapeutic agent.