INSOMNIA & UNFAMILAR SLEEPING LOCATION

This double - blind placebo - controlled study found that the administration of L- Tryptophane at doses of 1 gram or 3 grams per night significantly reduced sleep latency in patients suffering from insomnia due to unfamiliar sleeping location.

______ E. Hartman & R. Elion, " The Insomnia of sleeping in a strange Place; Effects of L-Tryptophane", Psychopharmacology, 53(2) July18, 1977, pgs 131- 133.
The above stated journal is the source.