I use it about once every two weeks before bed to fall asleep faster. However, I find that I like Kava Kava better for this.
But I've read a book about 5HTP in which the doctor who wrote it often prescribes it for insomnia, anxiety and depression. Perhaps you can locate the book.
Here's the link to it on Amazon.
http://www.amazon.com/exec/obidos/ASIN/0553379461/auctiomadeeasyus/002-2340223-7683254
Here's the description:
The most authoritative and comprehensive guide to realizing the amazing health benefits of 5-HTP
Written by one of America's leading naturopathic doctors, 5-HTP explains how this natural amino acid can safely and effectively regulate low serotonin levels, which have been linked to depression, obesity, insomnia, migraines, and anxiety.
5-HTP is also a powerful antioxidant that can protect the body from free-radical damage, reducing the risk of serious illnesses such as cancer. 5-HTP has already helped thousands, and Dr. Murray, citing extensive scientific studies and case histories, shows how this groundbreaking supplement can help you.
Hope you feel better soon.
SS