The effect of bromocriptine on chronic nonfluent aphasia was investigated in 4 patients suffering from a stroke 24 to 35 months before the onset of this study (average 29 months). Two patients had Broca, one had global and the other transcortical motor aphasia. CT-scans demonstrated anterior-posterior infarctions in 3 patients and anterior infarction in one. Bromocriptine was given initially at a dosage of 10 mg/day, and of 25 mg/day during the follow ups. By means of aphasia tests, bromocriptine was found to be ineffective for the treatment of any symptoms of chronic nonfluent aphasia.