Several psychoactive drugs have been shown to be effective in the trea
tment of acute manic syndromes. In clinical practice, antipsychotics a
re the most commonly used medications, although they are associated wi
th several adverse effects, namely extrapyramidal symptoms, which may
interfere with patient compliance. Therefore, their use should be rest
ricted to severe cases of mania, in which patients have a lack of insi
ght and concomitant psychotic features. Alternative antimanic drugs [l
ithium and anticonvulsants such as carbamazepine and, in some cases, v
alproic acid (sodium valproate)] can effectively be used in compliant
patients, especially at the beginning of manic episodes or in hypomani
a. However, anticonvulsants lack sedative effects and lithium has a de
layed onset of antimanic effects. Nevertheless, these disadvantages ca
n be overcome by the short term concomitant use of low potency antipsy
chotics or benzodiazepines. This provides effective sedation with mini
mal unpleasant adverse effects and (with short term use of benzodiazep
ines) risks for the development of dependency. Previously untreated ou
tpatients in the early stage of hypomania should be treated with slowl
y increased doses of lithium or carbamazepine, assisted by low potency
antipsychotics or benzodiazepines to provide sedation and improve sle
ep, In noncompliant patients or those with manic syndromes with pronou
nced psychotic features, high potency antipsychotics (oral or depot fo
rmulations) may have to be used. In outpatients who relapse into mania
while receiving prophylactic lithium or carbamazepine, the dosage of
either drug should be increased in parallel with the measures suggeste
d for previously untreated patients. Inpatients can be effectively tre
ated with rapidly increasing doses of carbamazepine suspension and the
use of higher doses of sedative medication. In some patients with tre
atment-resistant mania, the combination of lithium with antipsychotics
may augment therapeutic efficacy, while a minority of patients may re
quire electroconvulsive therapy.