Resiniferatoxin, a substance isolated from some species of Euphorbia, a cactus-like plant, shows pharmacological effects similar to those of capsaicin. We administered resiniferatoxin for treating detrusor hyperreflexia to patient with chronic spinal cord injury. Resiniferatoxin solution (100 ml at a concentration of 107, 106 M) was instilled twice into the bladder of patient with detrusor hyperreflexia and left in place for 30 minutes. Effects on bladder function were monitored at 1 month later follow-up. One month after the last resiniferatoxin instillation, patients reported a significant symptomatic improvement of their incontinence and increased mean bladder capacity. (J Korean Acad Rehab Med 2003; 27: 275-279)
