[Withdrawal symptoms of antidepressants]

Withdrawal symptoms are encountered with both the classical anti-depressants, i.e. the tricyclic antidepressants and monoamineoxidase inhibitors, the modern antidepressants, i.e. the selective serotonin re-uptake inhibitors, and the new antidepressants such as venlafaxine and mirtazapine. The symptoms that are reported following the withdrawal of these drugs can be classified into 8 groups: influenza-like symptoms, psychic symptoms, gastrointestinal symptoms, sleep disorders, equilibrium disorders, sensory disturbances, extrapyramidal symptoms and other symptoms. It is characteristic of these symptoms that they appear 1-4 days after reduction of the dose or the last administration of the drug. They may also appear in the infants of mothers who used an antidepressant during the last phase of the pregnancy. It is important that the patient be informed accurately and carefully at the start and termination of any treatment with an antidepressant. In order to prevent withdrawal symptoms, it is advisable to reduce the dosage slowly if possible when the treatment is to be terminated.