The anti-inflammatory activities of four organic extracts from the lea
ves of Eugenia jambos were investigated in rats using the Mizushima et
al, model of acute and chronic inflammation (Mizushima ct al. (1972)
Journal of Pharmacy and Pharmacology 24, 781-785). Orally administered
organic extracts of E. jambos (hexane, dichloromethane, ethyl acetate
and methanol), given at daily doses equivalent to 12.5 g/kg of dried
leaf material, inhibited both the acute and chronic phases of this exp
erimental model of inflammation. The ethyl acetate and methanol extrac
ts were the most effective and were equal or more effective than 80 mg
/kg of phenylbutazone. The methanolic extract was the most active in t
he chronic phase. A 10% aqueous extract (infusion) of the leaves teste
d in the same model was more effective than all of the organic extract
s.