Neurologic research
Best Peptides for Sleep, Ranked by Evidence
Sleep is a mechanism-heavy category. Every compound here has a plausible pathway to sleep, but the human evidence is thin, old, or borrowed from a different primary use.
Editorial review: September 14, 2026. Ranked by evidence strength, not popularity.
Key takeaways
Ranked by what has actually been studied
- Named for the use, oldest evidence: DSIP
- Anxiety pathway, not a sleep trial: Selank
- Circadian mechanism, preclinical: Epithalon
DSIP · Named for the use, oldest evidence
First isolated from rabbit brain and historically studied for slow-wave sleep. The human studies are small, from the 1980s, and predate current trial standards.
Read the DSIP research guide →Selank · Anxiety pathway, not a sleep trial
A tuftsin analog studied in Russia primarily as an anxiolytic, with one older comparative study against a benzodiazepine. Its relevance to sleep is through anxiety reduction, not a direct sleep endpoint.
Read the Selank research guide →Epithalon · Circadian mechanism, preclinical
Modeled on a pineal gland extract component with reported effects on aging and antioxidant pathways in animal and cell studies. Any sleep or circadian claim is inferred from pineal biology, not measured directly in a sleep trial.
Read the Epithalon research guide →Reign Peptide · Business disclosure
Research product listings
Jorge Abreu is involved in Reign Peptide. Links to Reign are a business connection, not an independent endorsement. Reign lists these products for laboratory research, not human consumption.
Use the listing to check the labeled identity, amount and available batch documentation. A purity result alone does not verify sterility, clinical suitability or equivalence to a medicine used in a trial.
Names and sizes are product labels, not dosing recommendations. Confirm current details with the seller.