Evenamide (NW-3509) is a blocker of voltage-gated sodium channels. Evenamide modulates sustained repetitive firing, without inducing impairment of normal neuronal excitability. It normalizes glutamate release induced by aberrant sodium channel activity. The potential benefits of the compound have been demonstrated in numerous preclinical models predictive of efficacy in psychiatric diseases, including models of psychosis such as amphetamine-induced hyperactivity, sensorimotor gating and information processing deficits (pre-pulse inhibition impairment induced by different stimuli), mania and depression. Evenamide is being evaluated in a Phase II trial as add-on treatment to 5HT2/D2 blocking antipsychotics in schizophrenic patients.