In general, antipsychotic drugs work by a. inhibiting the reuptake process of serotonin b. increasing the amount of acetylcholine in the brain c. blocking dopamine receptors in the brain d. inhibiting the function of the hypothalamus

c. blocking dopamine receptors in the brain Older antipsychotics, known as conventional antipsychotics, block the D2 receptor and improve positive symptoms. Unfortunately, these conventional antipsychotics also block D2 receptors in areas outside of the mesolimbic pathway.