Peptide Library / Sleep & Recovery

DSIP

Also known as: Delta Sleep-Inducing Peptide

The sleep peptide — studied since the 1970s for deepening slow-wave sleep, which is where every other kind of recovery actually happens.

Figures reflect protocols commonly reported in the research community — not a prescription or a recommendation.

What it is

DSIP was isolated in 1977 from the blood of sleeping rabbits — researchers were hunting the substance that induces sleep, and this nine-amino-acid peptide is what they found. It's one of the oldest research peptides in continuous study, examined for its ability to promote delta-wave (slow-wave) sleep — the deep stage where growth hormone releases, tissue repairs, and memory consolidates.

What the research looks at

• Slow-wave sleep promotion — the signature effect: increased delta activity in EEG studies, without the sedation mechanics of sleeping pills.
• Stress modulation — reduced cortisol response in stress models; it appears to normalize rather than sedate.
• Withdrawal support — small human studies in alcohol and opioid withdrawal reported reduced symptoms — one reason it appears in recovery-clinic research.
• Pain threshold — modest analgesic findings in older literature.
• What's missing — modern large trials; the literature is old, small, and mixed.

How protocols are commonly structured

100–250 mcg subcutaneous, 30–60 minutes before bed. Some report effects from night one; the more common report is cumulative improvement across 1–2 weeks. Because tolerance reports exist, the community norm is short runs (2–4 weeks) with breaks, rather than nightly-forever. It pairs naturally with the GH-axis pre-bed protocols (sermorelin, CJC/ Ipa) — same timing, complementary mechanism.

Reconstitution & storage

Lyophilized powder; bacteriostatic-water reconstitution (calculator), refrigerate after mixing.

Research protocols, not a prescription — talk to a physician before touching anything.