Verdoglobinuria.

We present a case of green urine caused by ingestion of the cyclic antidepressant amitryptilline and a brief review of the causes for green urine or verdoglobinuria. The possible etiologies for green urine are diverse, however, pharmaceuticals are the most common etiologic agents. While the frequency of occurrence of green urine remains unknown, an awareness of the potential etiologies is essential for the clinical toxicologist to develop a useful differential diagnosis for the problem.