Inhibition of lipid peroxidation (% LPOI) in rat tissue (kidney, liver, brain) homogenates by C. procera root aqueous extracts at different concentrations (0.5–4 mg/mL). Phytochemicals present in root were extracted with water, and % LPOI was measured as described in Section 2. BHA (2 mg/mL) was used as standard for comparison which exhibited about 85% LPOI against all tissues. The results are expressed as mean ± SD of three replicates ().