
Cognitive & Mood
Delta Sleep-Inducing Peptide (DSIP) is a neuropeptide that promotes deep, restorative sleep, reduces cortisol levels, and supports the body's natural recovery processes.
Suggested Dosage
100-300mcg subcutaneously before sleep.
3 items selected
Includes bacteriostatic water & companion items
Finally sleeping through the night
Chronic insomnia sufferer for 6 years. DSIP has been a genuine solution — not groggy the next day, just natural deep sleep. Combined with reduced cortisol I wake up actually refreshed. Game changer.
Works well for shift workers
As a night shift nurse, sleep management is critical. DSIP helps reset my sleep cycle when I transition between day and night shifts. Takes a week to feel the full benefit but it definitely works.
Cortisol reduction is the standout benefit
I've tried melatonin, magnesium, everything. DSIP is different — it's not sedating, it's normalising. My sleep tracker shows consistently deeper sleep phases and I wake up without that morning anxiety I used to have.
Best sleep peptide available
Week 2 and I'm already getting the deepest sleep of my adult life. No hangover, no dependency, just natural restorative rest. The quality from this source is clearly premium — reconstitutes cleanly and effects are as described.
Sleep quality transformation
I'm a chronic overthinker and bedtime was always my worst time. DSIP has genuinely calmed the mental noise. I fall asleep within 20 minutes now versus the 1–2 hours it used to take. Remarkable peptide.
Restorative sleep every night
Running DSIP for 6 weeks now. My REM and deep sleep percentages on my Garmin are the highest they've ever been. Cortisol on waking is lower and my mood in the mornings is dramatically better. Top quality product.
Works gently but profoundly
Not a knock-out pill — this is a gentle recalibration of your sleep architecture. Give it 10 days and the improvement is remarkable. Source quality is excellent, vials sealed and cold-packed on arrival.
Running alongside CJC/Ipamorelin — incredible combo
DSIP pre-bed combined with CJC/Ipamorelin is the deepest, most restorative sleep I've ever had. Recovery from training is dramatically accelerated. Both products from this store are clearly high quality.
DSIP 10mg
$70