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The analgesic activity of dioflorin and dioclenol, two constituents of Dioclea grandiflora Mart., has been studied in mice. It was found that dioclenol (10 mg/kg, i.p.) and dioclenol (10 mg/kg, i.p.) were effective in the acetic acid-induced writhing and tail immersion tests. These observations suggest that dioflorin and dioclenol possesses central antinociceptive activity.

Male and female rats were treated daily for 13 weeks with an ethanol extract of Cissampelos sympodialis leaves (9, 45 and 225 mg[sol ]kg). The food consumption, body weight and behavioural effects in the open-field test were evaluated by weekly monitoring. The results showed that the extract chronic treatment in female rats (45 and 225 mg[sol ]kg) reduced significantly the food intake and the body weight, and produced several alterations in the open-field test. These findings indicate that repeated oral administration of the extract may produce a sex-dependent difference in anoretic and behavioural effects.