For neurological diseases, serotonin, present in sunflower, potato and tomato interacts strongly (Ki = 1.1nM) with the 5-hydroxytryptamine receptors targeted by several drugs (e.g. Loxapine, Buspirone, to name a few), whereas, aporphine, present in poppy-seed, binds to the D(2) dopamine receptor (Ki = 527nM), target of Ofremoxipride, Sulpiride and other drugs (Fig. 3). Here, DRD2 is linked to nervous system disorder.