N-norarmepavine shows significant cytotoxic activities against HL-60 carcinoma cell line with inhibitory ratios of 51.43% at concentration of 1 x 10(-5) M. Norarmepavine shows inhibition against Trypanosoma cruzi. D-(+)- N-norarmepavine exhibits significant inhibitory activity towards adenosine 5'-diphosphate (ADP)-, arachidonic acid (AA)-, collagen-, and/or platelet-activating factor (PAF)-induced platelet aggregation.