Index/DSIP

DSIP

Delta Sleep-Inducing Peptide · Sleep Peptide

The original sleep peptide — delta wave induction and stress reduction.

FDA

Research Only

WADA

Not Listed

HALF-LIFE

~Minutes to hours

ROUTE

SubQ injection or intranasal

SCHEDULE

Pre-sleep

In Plain English

The original sleep peptide — delta wave induction and stress reduction.

Status & Legality

What do these mean?

NATTY?

No Test Exists

No established test exists for this compound.

FDA

Research Only

For research purposes only. Not FDA approved.

WADA

Not Listed

Not currently on WADA prohibited list.

COMPOUNDING

Not from pharmacies

Not available from licensed compounding pharmacies.

PRESCRIBED

Not prescribed

Not prescribed in conventional medicine.

ROUTE

SubQ injection or intranasal

Administration via subq injection or intranasal.

Who It's For

Sleep quality

Delta wave induction

Cortisol normalization

Pain modulation

How It Works

Delta Sleep-Inducing Peptide (DSIP) is a 9-amino acid neuropeptide first isolated from rabbit brain during deep sleep states. It promotes delta-wave (deep) sleep, normalizes disrupted cortisol rhythms, reduces stress-induced LH suppression, and has shown pain-modulating properties. One of the few peptides named specifically for its sleep-inducing function.

Side Effects

Grogginess next morning (at high doses)

Vivid dreams

Mild dizziness

Generally well tolerated

Common Mistakes

•

Dosing too high expecting stronger effects — the sleep-promoting effects are optimal at 200–300 mcg; higher doses cause morning grogginess without improving sleep quality

•

Using nightly indefinitely — cycle 2 weeks on, 1–2 weeks off to maintain receptor sensitivity

•

Expecting sedative-like knockdown — DSIP promotes natural delta sleep quality; it's not a sedative and doesn't force unconsciousness

Drug & Supplement Interactions

Benzodiazepines — additive CNS depressant effects; reduce benzo dose carefully before combining

Melatonin — generally safe to combine; DSIP promotes delta wave sleep, melatonin supports circadian rhythm — complementary

Alcohol — avoid; unpredictable CNS effects when combined with sleep peptides

The PepVault Take

DSIP is one of the most underappreciated sleep peptides in the index. Unlike sleep medications, it promotes deep delta-wave sleep quality rather than inducing sedation or causing dependency. The cortisol-normalization effect makes it particularly useful for people whose sleep issues are stress-driven. 200 mcg SubQ 30 min before bed is the sweet spot.