Side-by-side comparison of mechanisms, dosing, interactions, and stacking potential.
| DSIP (Delta Sleep-Inducing Peptide) | Epitalon | |
|---|---|---|
| Category | Peptides | Growth Factors |
| Standard Dose | Research indicates 100-300 mcg administered before bedtime via subcutaneous injection or intranasal. | — |
| Timing | 30-60 minutes before desired sleep onset. Evening only. | — |
| Cycle Duration | 2-4 week cycles with equal rest periods to prevent tolerance. | — |
| Evidence Level | animal_plus_anecdotal | Emerging |
DSIP is a naturally occurring nonapeptide (Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu) originally isolated from rabbit brain hypothalamus in 1977. It modulates GABAergic neurotransmission by potentiating GABA-activated currents in hippocampal and cerebellar neurons while blocking NMDA-activated potentiation in cortical neurons. It also interacts with opioid-associated receptors, modulates serotonin and dopamine systems (increasing serotonin levels), and promotes delta wave (slow-wave) sleep through mechanisms that remain incompletely characterized.
Research indicates 100-300 mcg administered before bedtime via subcutaneous injection or intranasal.
30-60 minutes before desired sleep onset. Evening only.
2-4 week cycles with equal rest periods to prevent tolerance.
Synthetic tetrapeptide studied in Russian longevity literature for pineal signaling, circadian regulation, and telomerase-related hypotheses.
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