There is some research indicating possible mitochondrial dysfunction in Psychosis. Currently a client with psychosis has been given melatonin for sleep in combination with therapies done by myself - Cognitive restructuring, talking to voices and cognitive therapy. This was after ALL normal (medical and psychotherapeutic) treatments had been applied for a 2 year period with little success before I received the client. The only two differences in treatment was talking to voices and melatonin prescribed by the doctor. Naturally this is not enough to propose that melatonin may have an impact, however there was a distinct improvement in cognitive processing abilities. Has anyone done any trials or research on the use of melatonin. Studies suggest that melatonin may or may not partially or fully repair mitochondria, whilst no research has been found on the possible utilisation of Gh.