Groups	Treatment
Group I	0.5 ml/day distilled water, p.o.; (Normal control, NC)
Group II	0.5 ml/day distilled water, p.o. + 0.1 ml of carrageenan; (Carrageenan control, CC)
Group III	20 mg/kg/day ibuprofen, p.o. + 0.1 ml of carrageenan; (IP-20)
Group IV	100 mg/kg/day methanolic extract of P. niruri, p.o. + 0.1 ml of carrageenan; (MEPN-100)
Group V	200 mg/kg/day methanolic extract of P. niruri, p.o. + 0.1 ml of carrageenan; (MEPN-200)
Group VI	400 mg/kg/day methanolic extract of P. niruri, p.o. + 0.1 ml of carrageenan; (MEPN-400)