Toxicological Studies of Methanol Stem Bark Extract of Eucalyptus camaldulensis on Wister Albino Rats

Aim: The aim is to evaluate the toxicological profiles of methanol stem bark extract of E. camaldulensis (MSEEC) on Wister albino rats.

Methods: Acute toxicity study was conducted according to OECD, 2001. The rats were grouped into six groups of one rat each and were given single oral dose 5000 mg/kg of the extract. A total of 30 albino rats of both sex were used for the toxicological study. The rats were divided into five (5) groups of six (6) rats. Control group (group 1) received distilled water orally 1 ml/kg. Groups (2-5) received doses of 500, 1000, 1500 and 2000 mg/kg of the extracts. The experiment lasted for 28 days. Data analysis was done using SPSS version 20.0.

Results: The LD50 of MSEEC was greater than 5000mg/kg. The sub-chronic doses of 500-2000 mg/kg of the extract shows no significant (P>.05) difference of the hematological parameters when compared to the control. The Serum biochemical parameters were no significant (P>.05) compared to the control. However, there was an increase in creatinine level at doses 500, 1500 and 200 mg/kg.

Conclusion: The results from this study indicate that administration of methanol stem bark extract of Eucalyptus camaldulensis did not produce significant toxic effect.