| The most commonly used neuroleptics |
| Approved name |
UK Trade Name |
US Trade Name |
| chlorpromazine |
Largactil |
Thorazine |
| thioridazine |
Melleril |
Mellaril |
| flupenthixol |
Fluanol/Depixol |
n/a |
| clopenthixol |
Clopixol |
n/a |
| perphenazine |
Fentazin |
Trilafon |
| trifluoperazine |
Stelazine |
Stelazine |
| pericyazine |
Neulactil |
Neulactil |
| promazine |
Sparine |
n/a |
| loxapine |
Loxitan |
Loxitane |
| sulpiride |
Sulpitil/Dolmatil |
Dogmatyl |
| haloperidol |
Serenace/Haldol |
Haldol |
| droperidol |
Droleptan |
n/a |
| pimozide |
Orap |
Orap |
| fluphenazine hydrochloride |
Moditen |
Moditen |
| molindone hydrochloride |
n/a |
Moban/Lidone |
| New or atypical neuroleptics |
| Approved name |
UK Trade Name |
US Trade Name |
| clozapine |
Clozaril |
Clozaril |
| risperidone |
Risperdal |
Risperdal |
| olanzapine |
|
|
| sertindole |
Serdolect |
Serlect |
| quetiapine |
Seroquel |
Deroquel |
| ziprasidone |
|
|
| remonapride |
|
|
| zotepine |
|
|
History of the Neuroleptics
There is considerable controversy over who discovered the neuroleptics, one that is highly relevant to the question of just what these drugs do. Chlorpromazine was first synthesised in 1950, with the intention of producing centrally acting antihistamine for the control of cardiorespiratory sock or collapse. It was first used widely in humans in 1952, along with other agents, as part of an anaesthetic cocktail, when its effects were noted by a chlorpromazine – they were neither sedated in the usual way with anaesthetic agents or analgesic, but rather appeared to become indifferent. This he described as an ataractic effect. A notable point here is that the effect must have come on within an hour or so after having had the drug – and it came on in normal subjects.
In 1952, Jean Delay and Pierre Deniker reported that chlorpromazine was of benefit in controlling states of manic and psychotic agitation. Around the time of its launch in 1954, there was no suggestion that chlorpromazine was likely in any way to be specific to schizophrenia. That came later. In the mid-1950s, chlorpromazine was being reported as being useful for almost every psychiatric condition (hence its trade name Largactil – Large Action).
Laborit has always claimed priority in the discovery of chlorpromazine. Delay and Deniker and others have disputed this. To some extent taking sides in the dispute depends on whether you see the neuroleptics as being in some way curative of psychotic illness or as producing an anti-agitation effect – an effect that is produced equally in all takers who are agitated, whether or not they have a psychological problem. Laborit’s descriptions are in line with the approach that is adopted in this article, which is that neuroleptics act by inducing a state of psychic indifference – in everyone who has them, and that they do this within a short period of time. Delay and Deniker’s approach is the approach that later led to the notion that neuroleptics were anti-schizophrenic.
Within a few years of their use, it became clear that the new group of drugs produced extrapyramidal side effects. As further compounds came on stream, it seemed that only those that produced extrapyramidal effects brought about benefits in the psychoses. This led to two things. One was that the drugs as a group came to be called neuroleptics by Delay, a term which literally means ‘nerve seizing‘. The second effect was that, for 30 years, little effort was put into finding ‘antipsychotic‘ agents that would not produce extrapyramidal effects – atypical neuroleptics as such agents are now called. It is only in recent years with the rediscovery of clozapine – a drug almost devoid of extrapyramidal effects – that the picture is changing.
Are Neuroleptics Anti-Schizophrenic?

It is commonly believed that neuroleptics drugs are anti-schizophrenic.
The evidence that neuroleptics are anti-schizophrenic comes from a series of research projects which have shown that subjects who take them after discharge from hospital are much less likely to be readmitted than those who do not.
The dopamine hypothesis of schizophrenia has been developed based on this kind of evidence. Briefly, this hypothesis states that as all neuroleptics block the dopamine system in the brain, and as they are beneficial in schizophrenia, therefore there must be something wrong with the dopamine system in the brains of individuals with schizophrenia. A major research enterprise has developed around attempts to test this hypothesis. From a sociological point if view, there have been two consequences of this. One is that many current researchers have had a vested interest in believing that neuroleptics are anti-schizophrenic. Another has been given the ‘known’ abnormalities in the dopamine system in schizophrenia, the fact that the drugs work on the dopamine system means that they are anti-schizophrenic.
For those who take the approach that neuroleptics do reverse the core disturbance in schizophrenia, the usual response to patients not getting better has been to give more of the drugs, and the idea that an individual might not take their drugs is viewed very seriously. In addition, the idea of paying much heed to what the takers of the drugs have to say about whether they are helpful or not seemed irrelevant – after all, these drugs are curative of an illness, a cardinal manifestation of which is supposedly lack of judgement.
The view taken throughout this chapter is that neuroleptics are not specifically anti-schizophrenic but that they are useful for anyone who is agitated, rather than just for people who have schizophrenia. The evidence for this comes from daily practice. Anyone who is agitated will usually be prescribed neuroleptics, whether or not they have schizophrenia. They may have depression, mania or just be agitated. Read more…