Sleep depth.
Sleep-supportive peptide use is largely anecdotal. Mechanism is plausible for the GH secretagogue class; rigorous polysomnography data is limited.
How this class moves the outcome.
Nocturnal GH pulse amplification
GHRH-analogues and ghrelin-mimetics amplify the natural overnight GH surge, which correlates with slow-wave sleep in healthy adults.
Direct delta-sleep induction
DSIP was identified by its ability to induce delta-band EEG activity in animal models; human evidence is older and limited.
Pineal / circadian modulation
Epitalon is hypothesised to act on pineal melatonin signalling, though direct mechanism in humans is not well characterised.
Ranked by human-evidence strength.
- 01
DSIP
Delta Sleep-Inducing PeptideEndogenous nonapeptide associated with delta-wave sleep. Effects on sleep architecture are inconsistent in human trials.
Nonapeptide (sleep modulator)t½ ~7 minHuman observational - 02
Epitalon
EpithalonRussian synthetic pineal-gland tetrapeptide. Marketed for longevity; evidence largely Russian/in-house.
Pineal tetrapeptidet½ ShortPreclinical only - 03
Ipamorelin
Selective GH secretagogue with minimal effect on cortisol or prolactin. Reported for sleep and recovery.
Growth hormone secretagoguet½ ~2 hPreclinical only - 04
CJC-1295 (with DAC)
DAC:GRFGHRH analogue with drug-affinity complex extending half-life to days. Sustained elevation of GH/IGF-1.
GHRH analogue (long-acting)t½ ~6–8 daysPreclinical only - 05
Sermorelin
GRF 1-29Synthetic GHRH(1-29) historically marketed as Geref. Common in US anti-aging compounding.
GHRH analoguet½ ~10–20 minHuman RCT
What the human data actually shows.
Each bar is the proportion of candidates on this brief at that evidence tier. RCT first, observational second, preclinical and anecdotal labeled and never inflated.
See full methodology →Where this class can hurt you.
- GH-axis modulation can affect insulin sensitivity over time.
- Most peptides in this class are research-use-only; product identity is not verified.
- Subjective sleep gains often reflect placebo effects unmeasured in informal use.
- Most reports rely on subjective sleep scoring rather than objective sleep architecture.
- Pulsatile GH dynamics may not translate to a measurable next-day outcome for everyone.
Decide between candidates.
Put the top 4 candidates side by side.
Mechanism · half-life · routes · evidence tier · safety signals. A decision matrix, not a leaderboard.
Current scientific consensus.
- Mechanistic plausibility for GH secretagogues
- Reliable next-day cognitive benefit
- Equivalence to validated sleep hygiene
- Long-term metabolic impact
- Dose response on objective sleep architecture
"An emerging category. Plausible mechanism, weak objective endpoints. Validated sleep hygiene still outperforms."
Where this is heading.
An emerging category. Plausible mechanism, weak objective endpoints. Validated sleep hygiene still outperforms.
We re-grade this brief quarterly. Confidence and outcome grades shift as new RCTs publish, safety data accumulates, and replication efforts read out. Changes are logged publicly on the evidence changelog.
Matched protocol templates.
Matching templates…