The drug class of dopamine blockers includes agents called antipsychotics. It consists of dopamine blockers, often with serotonin blockade. Dopamine blockers are agents used to treat psychotic symptoms such as delusions and hallucinations. These medications have been developed mostly for use in schizophrenia, but they always have been found to be effective in acute mania as well. For the latter reason, they have been used in bipolar illness as well. Several of these agents have been proven effective in the depressive phase of bipolar illness, not just the manic phase. Also, some of them have been shown to be effective in the depressive phase of unipolar mood illness. The clinical pharmacology of specific agents within each class of dopamine blockers, including efficacy and side effects, is explored. Specific phenomena surveyed include metabolic syndrome, weight gain, extrapyramidal side effects, Parkinsonism, akathisia, and tardive dyskinesia.