Davis et al (1989) found that antipsychotics were more effective than placebos in a meta-analysis of over 100 studies. They found that 75% of patients improved against 25% in the placebo group.
Marder (1996) found that clozapine was as effective as typicalantipsychotics for positivesymptoms, helping 30 to 61% of patients who were resistant to typical antipsychotics.
Drugtherapy is usually faster acting and more cost effective than other psychological therapies.
Lieberman (2005) found that 74% of 1432 individuals discontinued treatment within 18 months because of side effects.Typicaldrugs caused muscular disorders whereas atypical drugs caused more weightgain.
Some antipsychoticdrugs have a wide variety of actions on the brain and behaviour, than they are intended to treat. This can lead to a range of sideeffects.
Unwanted sideeffects from antipsychotic medication can be very serious and can cause distress and more serious health complications.
Research into the effectiveness of drug therapy is very sociallysensitive. Some people argue that these drugs are used as a form of socialcontrol, making patients easier to manage.
Moncrieff (2013) suggest that antipsychotics are often used in hospitals to calm patients with schizophrenia and make them easier for staff to work with, rather than for the benefits of the patients themselves.
Ethicalissues arise when people are forced to take drugs. This may be the case in patients who are hospitalised with schizophrenia.
Drugtreatments may control the symptoms of schizophrenia but do not cure the underlying problem which may be causing the disorder.
Healy (2012) suggested that most studies investigating the effectiveness of drugtherapy are often only focused on the short-term effects.
Long-term use of antipsychoticdrugs can result in serious sideeffects such as tardive dyskinesia, which is caused by dopamine supersensitivity and causes involuntary facial movements such as grimacing, blinking and lip smacking.
The most serious sideeffect of antipsychotic drugs (mainly typical antipsychotics) is neurolepticmalignantsyndrome (NMS). NMS results in high temperature, delirium and can be fatal. This means the antipsychotics can do harm as well as good.
Compliance is a major problem with drugtherapy for schizophrenia. It is estimated that 40-50% of people with the disorder have problems sticking to their prescribed medication.
Smith et al (2010) suggest that antipsychoticdrugs often fail to significantly improve the negativesymptoms and cognitive dysfunction associated with schizophrenia.