Peptide Trainings

DSIP vs Epitalon

Compare sleep-focused and circadian-longevity research.

DSIP

The original sleep neuropeptide studied for deep delta sleep and stress resilience

Delta Sleep-Inducing Peptide (DSIP) is a nonapeptide first isolated from rabbit cerebral venous blood in 1977. It was named for its ability to induce delta (slow-wave) sleep in rabbits. Research has since expanded to explore its roles in stress response modulation, neuroendocrine regulation, antioxidant activity, and potential neuroprotective effects. Think of DSIP as a gentle nudge toward the deepest, most restorative stage of sleep — the stage where your body actually repairs itself.

Mechanism of action

DSIP modulates the activity of several neurotransmitter systems including GABA, serotonin, and opioid pathways. It influences the hypothalamic-pituitary axis, affecting the release of LH, GH, and cortisol. Its sleep-promoting effects may involve modulation of adenosine signaling and direct effects on sleep-regulating circuits.

Benefits discussed in research

  • Improves sleep quality and promotes deep delta sleep
  • Reduces anxiety and supports stress reduction
  • Helps regulate circadian rhythm
  • May provide pain relief
  • Potential reduction in cortisol
  • Antioxidant and neuroprotective properties

Research status

Preclinical

Dosing information

For educational and research purposes only. Not medical advice.

typical
0.5 mg once daily (starting dose)
range
0.5–2 mg/day
frequency
Once daily (subcutaneous injection in stomach or upper arms)
route
Subcutaneous injection
cycleLength
8–12 weeks with gradual titration
notes
Start at 0.5 mg once daily for the first 4 weeks. At week 5, the dose may be increased to 1 mg once daily. At week 9, if additional effects are needed, the dose may be increased to 2 mg once daily. Administer in the evening for best sleep-promoting effects.

Reconstitution and storage

Remove the caps from the bacteriostatic water (BAC water) and DSIP vial and clean both stoppers with alcohol swabs. Draw 200 units (2 mL) of bacteriostatic water into a syringe and inject it into the DSIP vial. Gently swirl until fully dissolved — do not shake. The solution is now 5 mg/mL.

Lyophilized powder: store in a cool, dry, dark area for up to 1 year. Once reconstituted: refrigerate and use within 56 days.

Side effects and safety

  • Generally well tolerated
  • Mild drowsiness
  • Headache (rare)
  • Injection site reactions

Frequently asked questions

How does DSIP compare to other sleep peptides?

DSIP specifically promotes delta sleep — the deep, slow-wave stage where your body does most of its physical repair and memory consolidation. Melatonin helps you fall asleep but does not necessarily improve the quality of deep sleep. Sedatives knock you out but often suppress the deep stages. DSIP is more targeted: it nudges your brain toward the most restorative part of the sleep cycle without the grogginess.

Can DSIP be combined with Selank?

Yes, and this is a popular combination for people dealing with stress-related sleep problems. Selank calms the anxiety and mental chatter that keeps you awake, while DSIP helps push you into deep, restorative sleep once you are down. Both can be used as nasal sprays, so the routine is straightforward.

How do I reconstitute a 10 mg DSIP vial?

Add 2 mL (200 units) of bacteriostatic water to the 10 mg vial. This gives a concentration of 5 mg/mL. For a 0.5 mg dose draw 10 units; for a 1 mg dose draw 20 units; for a 2 mg dose draw 40 units on a U-100 insulin syringe. Use the reconstituted solution within 56 days.

Research references

Read the DSIP profile

Epitalon

A telomere-lengthening peptide for cellular longevity

Epitalon is a tiny four-amino-acid peptide that has been studied for longevity for over 40 years, primarily by Russian scientists. It is based on a natural peptide produced by your pineal gland — a small gland in your brain that also controls your sleep-wake cycle. The big claim to fame for Epitalon is its ability to activate an enzyme called telomerase, which helps maintain the protective caps on your DNA. Those caps (telomeres) get shorter as you age, and shorter telomeres are linked to aging and disease.

Mechanism of action

Here is a helpful analogy: your chromosomes are like shoelaces, and telomeres are the plastic tips at the end that stop them from fraying. Every time a cell divides, those tips get a little shorter. Epitalon activates telomerase, the enzyme that rebuilds those tips. It also helps regulate melatonin production, which is why many users notice improved sleep quality alongside the longevity benefits.

Benefits discussed in research

  • Activates telomerase enzyme to lengthen telomeres
  • Regulates the sleep-wake cycle via melatonin
  • Antioxidant properties
  • May extend lifespan (demonstrated in animal studies)
  • Supports immune function
  • Normalizes hormonal function

Research status

Preclinical

Dosing information

For educational and research purposes only. Not medical advice.

typical
5 mg once daily (standard cycle)
range
1–10 mg/day
frequency
Once daily for 10–20 days per cycle
route
Subcutaneous injection
cycleLength
10–20 days, 1–2 times per year
notes
Standard dose is 5 mg once daily for 10–20 days. Lower doses of 1–5 mg are used for milder effects. Anti-aging protocols sometimes use up to 10 mg once daily. Treatment cycles are repeated 1–2 times per year with several months between cycles. Evening dosing is preferred due to its effects on melatonin.

Reconstitution and storage

Remove the caps from the bacteriostatic water (BAC water) and Epitalon vial and clean both stoppers with alcohol swabs. Draw 100 units (1 mL) of bacteriostatic water into a syringe and inject it gently into the Epitalon vial. Swirl gently until the peptide is fully dissolved — do not shake. The solution is now 10 mg/mL.

Lyophilized powder: store in a cool, dry, dark place for up to 1–2 years. Once reconstituted: refrigerate at 2–8°C and use within 20–30 days to maintain potency.

Side effects and safety

  • Generally very well tolerated
  • Mild fatigue (rare)
  • Injection site reactions

Frequently asked questions

Does Epitalon actually lengthen telomeres in humans?

Animal and some human studies suggest Epitalon can activate telomerase. However, large-scale human clinical trials are still limited. The research is promising but should be interpreted cautiously.

How do I reconstitute a 10 mg Epitalon vial?

Add 1 mL (100 units) of bacteriostatic water to the 10 mg vial. This gives a concentration of 10 mg/mL. For a 1 mg dose draw 10 units; for a 5 mg dose draw 50 units; for a 10 mg dose draw 100 units on a U-100 insulin syringe. Use the reconstituted solution within 20–30 days.

How often should I run an Epitalon cycle?

The standard approach is one 10–20 day cycle, one to two times per year, with several months off in between. This mirrors the way it has been used in the Russian research that forms the backbone of Epitalon science. Continuous daily use is not recommended.

Research references

Read the Epitalon profile

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