When anti-psychotics are used for longer periods, some people develop tardive dyskinesia, characterized by involuntary movements, usually most noticeable about the mouth. There are steps which can be taken to prevent TD such as keeping the dose of medication at its lowest effective level. Although TD often improves if medication can be safely discontinued, sometimes it is irreversible. Antidepressants These drugs are used to treat severe depression and the agitated or hostile behavior which may accompany depression. Some antidepressants are toxic when taken in overdose, therefore, the prescribed dosage should be carefully followed.
Many antidepressants are on the market.
Broadly speaking they can be divided into three groups, the cyclicals, monoamine oxidase inhibitors, and the selective serotonin reuptake inhibitors. Cyclicals Allergic and autonomic reactions can occur with this group of antidepressants and are similar to those described for the antipsychotic medications. The most common side effects are dry mouth, constipation and blurred vision. In some cases they may cause stomach upset, weight gain, nightmares, inability to sleep, sexual difficulties or increased seizure activity in those people who already have epilepsy. Many of these side effects can be reduced or may disappear either with time or changes in dose, or by using other medications.