Best peptides for Sleep & Circadian
DSIP (Delta Sleep-Inducing Peptide), Pinealon, Epitalon, and growth-hormone secretagogues (MK-677, Sermorelin) are the peptides most-studied for sleep architecture, deep-sleep duration, and circadian regulation. Each entry below links to its full research profile.
Neuropeptide | Sleep regulation
Delta Sleep-Inducing Peptide (DSIP) is a neuropeptide that has been studied for its potential roles in sleep regulation, stress modulation, and pain management. It is primarily recognized for its ability to promote sleep and enhance sleep quality, which are essential for overall health. DSIP appears to influence various physiological processes, including the modulation of neurotransmitter release and the regulation of hormonal systems, particularly those involved in stress responses.
Telomerase stimulation | Aging support
Epitalon, also known as Epithalon or Epithalamin, is a synthetic tetrapeptide derived from the pineal gland that has garnered interest for its potential effects on aging and various physiological processes. Research has explored its bioactive properties, particularly in relation to reproductive health and the aging of the pineal gland.
GHRH analogue | GH/IGF-1 modulation
GHRH analogue used in research contexts for GH/IGF-1 modulation, muscle and bone density, sleep, and recovery.
Related reading
KLOW is an informal research-community stack combining KPV, Larazotide, Orexin-related compounds, and Wolverine-stack peptides for combined gut, inflammation, sleep, and tissue support.
The defensible sleep-focused peptide stack — DSIP for slow-wave-sleep induction plus a GH secretagogue layer for amplified nocturnal GH pulse — with realistic expectations and what not to add.
Peptides studied for sleep quality, deep sleep, and circadian regulation — DSIP, Epitalon, Pinealon, and GH secretagogues — with realistic expectations and how they compare.
Dosing for approved agents comes from the label, not from this site. If you are working out injection volumes, the reconstitution calculator converts mg per vial into syringe units, and how to use peptides covers storage and handling. Neither is a recommendation to use anything.
Rankings reflect how much indexed research exists, not how safe or effective anything is for you. Nothing here is medical advice. Most peptides on this site are not approved drugs.