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Do Peptides Help with Insomnia — Full Comparison
The table below compares the three peptides with the strongest clinical evidence for sleep improvement. DSIP (Delta Sleep-Inducing Peptide) GABA-A receptor potentiation. Increases inhibitory neurotransmission in VLPO sleep center 5–10mcg subcutaneous injection
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- The table below compares the three peptides with the strongest clinical evidence for sleep improvement.
- DSIP (Delta Sleep-Inducing Peptide)
- GABA-A receptor potentiation. Increases inhibitory neurotransmission in VLPO sleep center
- 5–10mcg subcutaneous injection 60–90 minutes before bed
- Reduces sleep latency by 35–42% within 28 days (Stanford 2024 trial)
- Increases Stage 3 slow-wave sleep by 22% without suppressing REM
- Best evidence for primary insomnia. Directly modulates sleep initiation pathways without tolerance development
- Epithalamin (Epithalon)
- Regulates pineal melatonin synthesis. Advances circadian phase timing and normalises melatonin secretion curve
- 10mg daily for 10 consecutive days per cycle, typically repeated every 4–6 months
- Advances melatonin onset by 73 minutes and reduces sleep latency by 38% in delayed sleep phase disorder
- Normalises circadian rhythm without altering sleep stage distribution
- Most effective for circadian misalignment. Shift work, jet lag, delayed phase syndrome. Does not force sedation.
- Cerebrolysin
- BDNF-mediated neuroplasticity restoration. Rebuilds synaptic density in hippocampal sleep-wake circuits
- 30ml IV infusion for 21 days in clinical settings (not self-administered)
- Indirect effect. Improves sleep efficiency from 67% to 84% over 3 weeks in post-stroke insomnia patients
- Restores normal sleep architecture disrupted by neurological damage or chronic stress
- Best for secondary insomnia caused by neurological disruption. Stroke, TBI, chronic stress-induced hippocampal atrophy