Groups N = 5 animals

Doses (g∙kg⁻¹b∙wt)

Mean of writhes number ± S.E.M.

Writhes inhibition (%)

NaCl

-

22.20 ± 3.63

-

NaCl + acetic acid

-

49.41 ± 2.61^***

-

Piroxen

20

06.20 ± 1.30^***

72.07

Aqueous extract+ acetic acid

200

15.20 ± 0.84^***

31.53

Ethanolic extract+ acetic acid

200

13.00 ± 2.24^***

41.44