Due to its analgesic effect, N58A has been tested as a possible treatment for trigeminal neuralgia in a rat model. This model shows a reduced threshold for thermal and mechanical pain, which was alleviated by administration of N58A. At a dose of 400 μg/100 mg of body weight, the analgesic effects of N58A last for several hours and are similar to the effects of morphine. The injection of N58A does not affect motor control of the limbs in rats
