01 / DESIGN
What was studied?
Fourteen middle-aged people with severe chronic insomnia were studied under double-blind, placebo-controlled conditions. Measurements included laboratory sleep recordings and tests of daytime psychological state and performance.
02 / FINDINGS
What did the researchers report?
The authors reported improvements in nighttime sleep and daytime alertness or performance during the experimental period. Some changes persisted into the first post-treatment observation night.
03 / LIMITS
How should it be interpreted?
The very small sample and limited follow-up require caution. This publication predates the later 16-participant DSIP trial with weaker findings; the studies should be read together rather than selecting only the positive report. The results do not establish modern clinical effectiveness or a personal-use protocol.
Voltera Peptide editorial reading note. Based on the linked source record. Methods and corrections.