Background and Objective: Moringa oleifera is a widely acclaimed ʻmiracle plantʼ whose medicinal and nutritional importance require documentation. The effect of Moringa oleifera leaf powder (MOLP) intake on haematologic, hepatic and renal function indices was studied using standard methods. Materials and Methods: Twenty-four Albino rabbits, weighing 0.9-1.8 kg, were distributed into group I animals fed the control diet and groups II-IV fed 500, 750 and 1000 mg kgG 1 b.wt., of MOLP, respectively for 28 days. Feed intake and body weights of the animals were measured daily. Results: Groups fed 500 and 750 mg kgG 1 of MOLP consumed more of the feed and showed a non-significant (p>0.05) but a more progressive increase in mean body weights. Intake of MOLP did not significantly (p>0.05) alter most of the biochemical and hematologic indices studied but serum total protein, albumin and haemoglobin concentrations increased significantly (p<0.05), while red blood cell indices increased non-significantly (p>0.05) with the increase in MOLP dosage. Generally, 500 and 750 mg kgG 1 MOLP diets gave better positive indices than 1000 mg kgG 1 MOLP. Conclusion: Apparently, MOLP intake has no harmful effects on the liver, kidney and blood parameters of animals but may enhance the building capacity, repair and maintenance of body tissues. However, the study calls for caution in the use of very high doses.