Typical antipsychotics are a class of antipsychotic drugs first developed in the 1950s and used to treat psychosis (in particular, schizophrenia). Typical antipsychotics may also be used for the treatment of acute mania, agitation, and other conditions. The first typical antipsychotics to come into medical use were the phenothiazines, namely chlorpromazine which was discovered serendipitously. Another prominent grouping of antipsychotics are the butyrophenones, an example of which would be haloperidol. The newer, second-generation antipsychotics, also known as atypical antipsychotics, have replaced the typical antipsychotics due to the Parkinson-like side effects typicals have.
Both generations of medication tend to block receptors in the brain's dopamine pathways, but atypicals at the time of marketing were claimed to differ from typical antipsychotics in that they are less likely to cause extrapyramidal motor control disabilities in patients, which include unsteady Parkinson's disease-type movements, body rigidity and involuntary tremors. More recent research has demonstrated the side effect profile of these drugs is similar to older drugs, causing the leading medical journal The Lancet to write in its editorial "the time has come to abandon the terms first-generation and second-generation antipsychotics, as they do not merit this distinction." These abnormal body movements can become permanent even after medication is stopped. While typical antipsychotics are more likely to cause parkinsonism, atypicals are more likely to cause weight gain and type II diabetes....LESS
Prochlorperazine (Compazine, Buccastem, Stemetil) and Pimozide (Orap) are less commonly used to treat psychotic states, and so are sometimes excluded from this classification. from Typical antipsychotic
It is also a highly potent typical antipsychotic, 10–20 times more potent than chlorpromazine. from Prochlorperazine
Dopamine receptor antagonists including typical antipsychotics such as chlorpromazine (Thorazine), fluphenazine, haloperidol (Haldol), loxapine, molindone, perphenazine, pimozide, thioridazine, thiothixene, and trifluoperazine, the atypical antipsychotics such as amisulpride, clozapine, olanzapine, quetiapine (Seroquel), risperidone (Risperdal), sulpiride, and ziprasidone, and antiemetics like domperidone, metoclopramide, and prochlorperazine, among others, which are used in the treatment of schizophrenia and bipolar disorder as antipsychotics, and nausea and vomiting. from Dopaminergic
Prochlorperazine (Compazine, Stemzine, Buccastem, Stemetil, Phenotil) is a dopamine (D2) receptor antagonist that belongs to the phenothiazine class of antipsychotic agents that are used for the antiemetic treatment of nausea and vertigo. It is also a highly potent typical antipsychotic, 10–20 times more potent than chlorpromazine. It is also used to treat migraine headaches. Intravenous administration can be used to treat status migrainosus.