I'm having trouble sleeping. What does the Sai Satcharita say about Udi helping with insomnia?

Chapter 33 of the Shri Sai Satcharita specifically addresses insomnia in two instances noted by R. Hari Sitaram Dixit. In the first account, Dixit's friend had been unable to sleep for eight days and found no relief from a doctor's medicine. Dixit gave him some of Maharaj's Udi and told him to take it. The very next day, the friend came back and reported that he had taken the Udi the previous night and slept very well. The chapter also mentions a friend's child in Bandra who had not been able to sleep for two months. After his father took him to Shirdi for Darshan of Maharaj, the child got sleep that very night and continued to sleep well thereafter.