Sleep
DSIP research explores the sleep–wake rhythm, with interest in both night-time rest and how alert people feel the next day.
A LOOK AT THE RESEARCH
- middle-aged patients with chronic insomnia
- 14
- study treatment period
- 7 nights
Researchers reported better night sleep and improved daytime alertness and performance under double-blind, placebo-controlled conditions.
An early, small study; findings across DSIP trials are mixed.
More on the evidence
A later double-blind study of 16 people over five laboratory nights found weak objective changes and no improvement in subjective sleep quality. The overall evidence does not establish DSIP as a proven insomnia treatment.
Read the later DSIP trial · 1992



