This study investigated nutritive properties of aqueous extract of J. carnea leaves and its effects on haematological and biochemical indices of anaemia induced male Wistar albino rats. In the nutritional study, proximate composition, phytochemicals, antinutritonal factors, minerals and vitamins analyses were carried out using standard analytical procedures. Eighteen male Wistar albino mice were used for the acute toxicity study while 28 male Wistar albino rats were used for haematological and biochemical study. The rats were randomly distributed into seven groups of four rats each with group 1 as normal control. Group 2 was anaemia induced untreated, and group 3 was anaemia induced treated with 50 mg/kg b. wt. of Astyfer. Groups 4-6 were anaemia induced and treated with 100, 300 and 500 mg/kg b. wt. of the extract respectively. Group 7 was non-anaemic rats that received 500 mg/kg b. wt. of the aqueous extract. Nutritional study showed richness of the aqueous extract in proximate composition, phytochemicals, minerals and vitamins contents. The extract caused no adverse reactions or death in the animals indicating it is relatively safe for consumption. Significant (p<0.05) reduction in the levels of haematological indices observed in anaemic rats were significantly (p<0.05) reverted within 4 to 8 d of treatment with the extract when compared with group 2. There were no significant difference observed in the liver marker enzymes activities and renal function indices concentrations of all the anaemic rats treated with the aqueous extract when compared with normal control, which could be attributed to the aqueous extract lacking potentials of causing liver and renal damage. These findings suggest that aqueous of J. carnea leaves is safe, nutritionally rich with no toxic effects on liver and kidney function indices, and possesses anti-anaemic effects due to its blood boosting and replenishing properties.