The ethanol and water extracts of Sansevieria trifasciata
leaves showed dose-dependent and
significant (P < 0.05) increase in pain threshold in tail-immersion test. Moreover, both the extracts (100 –
200 mg/kg) exhibited a dose-dependent inhibition of writhing and also showed a significant (P < 0.001)
inhibition of both phases of the formalin pain test. The ethanol extract (200 mg/kg) significantly (P < 0.01)
reversed yeast-induced fever. Preliminary phytochemical screening of the extracts showed the presence
of alkaloids, flavonoids, saponins, glycosides, terpenoids, tannins, proteins and carbohydrates.