Mesaconitine is the main active component of genus aconitum plants.Mesaconitine has antinociceptive activity, has inhibition of stimulus-triggered and spontaneous epileptiform activity in rat hippocampal slices. It has antiinflammatory activity, it induced Ca2+ influx and activation of nitric-oxide synthase in endothelial cells and, thus, induced vasorelaxation in rat aorta.