Sleep & Repair.

Delta Sleep-Inducing Peptide (DSIP) is a 9-amino-acid neuropeptide that deepens slow-wave (delta) sleep through a fundamentally different pathway than any conventional sleep aid. Unlike sedatives, benzodiazepines, or GABA agonists — which suppress arousal — DSIP works upstream via HPA axis modulation, normalising cortisol rhythm and reducing stress-driven sleep fragmentation. The result is restorative sleep architecture rather than pharmacological sedation. First isolated in 1977 from rabbit brain following electrical stimulation, it remains the only peptide originally characterised by its sleep-architecture effects. Increases delta-wave sleep percentage without morning grogginess or impaired next-day performance — a profile that no pharmaceutical sleep agent currently matches.

Best for · Anyone with poor sleep restoration, elevated nighttime cortisol, or fragmented sleep who hasn't responded to standard sleep hygiene or OTC sleep aids. The foundation compound for this entire stack.

A tetrapeptide from the Khavinson peptide library, synthesised from the pineal gland. Epitalon regulates the circadian axis by restoring pineal melatonin secretion — the master signal for sleep timing. Its mechanism operates at the level of the biological clock rather than sleep depth: it resets phase alignment, corrects melatonin amplitude, and is particularly relevant when sleep is out of sync rather than just shallow. In longevity research, Epitalon is known for telomerase activation; in the sleep context, the more operationally relevant effect is circadian rhythm normalisation. Most useful for users whose circadian phase has drifted — shift workers, frequent travellers, age-related sleep-time advancement or delay.

Best for · Circadian dysregulation: shift work, jet lag, age-related sleep-phase drift, or anyone whose sleep problem is primarily one of timing rather than architecture.

Pre-mixed CJC-1295 (no DAC) + Ipamorelin — two distinct GH secretagogue pathways in a single vial. CJC-1295 binds the GHRH receptor on pituitary somatotrophs, extending GH pulse amplitude and duration. Ipamorelin binds the ghrelin receptor (GHSR-1a) via a completely separate pathway, triggering clean pulsatile GH release without cortisol elevation, prolactin rise, or appetite spikes associated with older GHRPs. In the sleep context, the critical mechanism is SWS-GH coupling: the largest natural GH pulse occurs during slow-wave sleep, and shallow SWS blunts this pulse regardless of what secretagogue is in play. DSIP deepens the SWS window; the blend provides the GH signal that the deeper window allows to express more fully.

Best for · Performance-focused users who want the sleep-depth benefit of DSIP plus amplification of the nocturnal GH recovery pulse. The Pro tier complement — frames GH signalling as a sleep-axis benefit rather than a recomp tool.

CJC-1295 without the Drug Affinity Complex — a GHRH analogue that produces discrete GH pulses rather than a sustained bleed, preserving the physiological pulsatile pattern. In the sleep stack context, CJC (no DAC) contributes the GHRH-receptor leg of the GH pulse that peaks during slow-wave sleep. The shorter half-life versus DAC form is preferable here because it keeps GH output tied to the natural nocturnal window rather than producing a continuous trough between doses.

Best for · Users who prefer separate vials to dose CJC and Ipamorelin independently, or those whose physician recommends precise individual titration rather than a fixed-ratio blend.

A selective ghrelin-mimetic GHRP that triggers pulsatile GH release via the GHSR-1a receptor — entirely distinct from the GHRH receptor pathway used by CJC-1295. Ipamorelin's selectivity profile is the cleanest in its class: no cortisol spike, no prolactin elevation, no meaningful hunger stimulation. In the sleep stack, it provides the GH-pulse layer with minimal systemic side effects, making it the right choice for users focused primarily on sleep quality and recovery rather than aggressive body recomposition.

Best for · Users who want the GH-pulse sleep benefit without the full blend vial — lower-commitment standalone dosing, or when prescribed alongside cjc-no-dac as separate vials.

A mitochondria-derived peptide encoded in the mitochondrial genome that activates AMPK — the cell's energy-sensing regulator. MOTS-c restores mitochondrial metabolic efficiency, improving glucose uptake and fatty acid oxidation at the cellular level. In the sleep stack context, it addresses a distinct axis: metabolic-driven fatigue patterns (insulin resistance, energy-substrate depletion, post-illness mitochondrial insufficiency) that sleep architecture interventions alone cannot fix. For users who sleep adequately but still wake exhausted, the underlying issue is often metabolic rather than architectural — MOTS-c targets that substrate directly.

Best for · The adjunct tier: users with metabolic-fatigue patterns, insulin resistance, or post-illness exhaustion whose sleep quality is adequate but restorative sleep isn't delivering normal energy levels.