The acceptability and efficacy of tianeptine were evaluated in three open trials in a total of 549 elderly patients, 426 of whom were treated for 3 months and 188 for 1 year. The therapeutic effect was that expected from an effective antidepressant, with a marked response after treatment for one month. In the geriatric trial, where patients were primarily dysthymic, continuation of treatment after 6 months consolidated the improvement already observed. Tianeptine also had a favorable long-term effect in chronic refractory depression. Drop-outs due to side-effects were few (4.4%), despite the high risk population. All pre-treatment complaints improved on tianeptine. The high frequency of somatic complaints expressed before treatment confirmed the extent to which depression is somatised in the elderly. Concomitant physical disease present in 87% of patients did not restrict the use of tianeptine. The fact that tianeptine has a low incidence of anticholinergic effects and no affinity for either H1 or α1 receptors makes it a particularly easy drug to use in elderly subjects who are sensitive to the side-effects of psychotropic agents.