Dysthymic disorder is a relatively common illness that is often treated with antidepressants.
Compared with the study of major depression, there has been little systematic study of potentiation strategies for antidepressant-refractory dysthymic disorder. In a series of 5 patients, chromium supplementation led to remission of dysthymic symptoms. Single-blind substitution of other dietary supplements in each of the patients demonstrated specificity of response to chromium supplementation. Preliminary observations suggest that chromium may potentiate antidepressant pharmacotherapy for dysthymic disorder. Controlled studies are indicated to test the validity of these initial observations.