The two URLs above may be of interest to you. The first covers the use of L-ornithine as a sleep aid for people with SIBO. It is often difficult to distinguish SIBO from candida. It is also possible to have candida and SIBO concurrently
The second URL covers the uses of 5-HTP, melatonin, and methlycobalamin as sleep aids. I have been fairly successfull with this treatment If a person can not sleep due to a lack of melatonin this treatment may help.