Acetic acid-induced writhing test
In the acetic acid-induced writhing assay the extract produced 33.0% (P < 0.01) and 51.1% (P < 0.001) writhing inhibition at the doses of 250 and 500 mg/kg of body weight respectively, which was comparable to the standard drug diclofenac sodium where the inhibition was 65.0% (P < 0.001) at the dose of 25 mg/kg of body weight (Table 2).