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DSIP vs Melatonin: side-by-side comparison

Peptide

Delta Sleep Inducing Peptide · Delta Sleep Peptide · Factor Delta

A 9-amino acid neuropeptide (Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu, ~849 Da) first isolated from rabbit cerebral venous blood in 1974 and chemically characterized by Schoenenberger & Monnier in 1977. Promotes delta wave (slow-wave) sleep stages 3-4 NREM. Modulates GABA and serotonin systems. Animal studies report increased nocturnal GH pulses and altered stress-hormone responses, but the controlled human trials that tested this directly found no effect on GH/prolactin (Giusti et al. 1993) or on CRH-/meal-induced ACTH/cortisol (Späth-Schwalbe et al. 1995): so the often-repeated GH and cortisol claims are largely unproven in humans. Research peaked in the 1980s-90s but development stalled due to very short half-life and inconsistent clinical results. Evidence quality is low-moderate with mostly small, outdated studies.

1.0/10 natty
Full breakdown →
VS
Ancillary

N-acetyl-5-methoxytryptamine

The most commonly used sleep aid, and relevant here because sleep is where recovery actually happens. The compounds people obsess over do far less than a consistently good night. It is also directly useful against the sleep disruption caused by several compounds in this archive, from late caffeine to trenbolone night sweats.

1.0/10 natty
Full breakdown →

1 / 10 natty scale / 1

Different class, same goal

DSIP is a peptide; Melatonin is an ancillary. They overlap on health, so the cost side below is where they actually separate.

The tape

Core ratings

The same three rulers every entry on the site is scored with, read head to head.

DSIPMelatonin
1.0

Natty scale

1 natural · 10 heavy

1.0
2.5

Effectiveness

Documented effect · of 5

2.5
1.0

Side-effect severity

Documented burden · of 5

1.0

Cost side

Body-load fingerprint

Where each one actually lands its strain, on the calculator's thirteen channels. Tap a row for what it means and which labs track it.

DSIPMelatonin

Cardiometabolic

Systemic

Injection & site care

Bars show strain at each one's typical protocol, not your dose. ≈ marks values inferred from side-effect data or category rather than hand-graded. For your numbers, run the calculator.

Logistics

The vitals

DSIPMelatonin
Peptide
Class
Ancillary
Subcutaneous
Route
Oral
100-300 mcg/dayOnce daily, 30-60 minutes before bed. Some use 5 days on/2 days off.
Typical dose
0.5-5 mg/dayTaken 30 minutes before bedtime when used as a sleep inducer
~7-25 minutes
Half-life
~30-60 minutes (immediate-release)
4-8 weeks
Typical run
2-26 weeks
Research chemical
Legal status
OTC supplement
Unclear
WADA
Not prohibited

Benefit side

What each is for

Shared goals carry both dots; a goal with one dot belongs to that side alone.

DSIPMelatonin
HealthRecovery

Run for

Sleep Quality ImprovementPromotes slow-wave (delta) sleep. Reduced sleep latency and improved sleep efficiency in some insomnia studies. Effects may be more pronounced in sleep-disordered individuals than healthy subjects.
GH Enhancement (unproven in humans)Animal studies (Iyer et al. 1987/1988) report increased nocturnal GH pulse amplitude, often cited as "30-50%" though that figure traces to older/animal work rather than a controlled human trial. The one controlled human trial that tested this, Giusti et al. (1993), found no significant change in GH or prolactin. Not comparable to exogenous GH.
Stress/Cortisol Normalization (unproven in humans)Improved stress tolerance and stress-hormone markers in animal models (e.g., preserved hypothalamic substance P, blunted adrenal/thymus stress response, Salieva et al. 1992). However, a controlled human trial (Späth-Schwalbe et al. 1995) found DSIP did not alter CRH- or meal-induced ACTH/cortisol secretion, so cortisol-normalizing claims are not established in humans.
Recovery SupportTheoretical improvement through better sleep quality alone (the cortisol-lowering pathway is not confirmed in humans). Any enhanced recovery capacity during intense training periods is indirect.

Documented upside

  • May improve slow-wave sleep quality
  • GH pulse increases seen in animal studies, but not confirmed in the one controlled human trial
  • Stress-protective effects seen in animal models; a controlled human trial found no cortisol/ACTH effect
  • Acts as an endogenous stress-limiting factor in animal research
  • Generally well-tolerated with mild side effects (largest human trial, n=107, reported good tolerance aside from occasional headache)
+3 more on the full page

Run for

Reducing Time To Fall AsleepThe best-supported use. Meta-analysis of primary sleep disorders found melatonin significantly reduced sleep latency, with a weighted mean difference of 7.06 minutes, alongside increased total sleep time and improved sleep quality.
Circadian RealignmentUsed at much lower doses and earlier timing to shift the body clock, for shift work, jet lag or delayed sleep phase. This is a different protocol from using it as a sleep inducer.
Offsetting Compound-Driven Sleep DisruptionSeveral compounds here degrade sleep: caffeine late in the day, stimulant fat-burners, and trenbolone's well-known night sweats and insomnia. Protecting sleep protects recovery.

Documented upside

  • Decreases sleep onset latency, increases total sleep time and improves overall sleep quality
  • A dose-response meta-analysis found effects on sleep onset latency and total sleep time peaking at 4 mg/day
  • Effects are modest but do not appear to dissipate with continued use
  • No dependence or withdrawal syndrome of the kind associated with sedative hypnotics
  • Very mild side-effect profile
+1 more on the full page

The downsides

Side effects, aligned

Each entry's documented side effects, sorted onto the same body systems so the gaps and the overlaps are visible. Tap any effect for the detail.

DSIPMelatonin
Blood pressure & water

None documented

None documented

Mood, sleep & CNS
Injection site

None documented

Other documented effects

The exit

Hormonal fallout & recovery

What each does to your own hormone axis while on, and what leaving it costs.

DSIPMelatonin
No data
HPTA suppression
none
No data
Aromatization
none
No data
Liver toxicity
none
No data
Hair-loss risk
none
No data
DHT-derived
No
No data
19-nor / progestogenic
No
Not required
PCT
Not required
While-on only
What sticks
Support role

DSIP

Does not suppress the HPT axis. No PCT required. May indirectly support recovery through improved sleep quality (direct cortisol-normalizing effects have not been confirmed in controlled human trials).

Melatonin

No HPT axis interaction. No PCT implications.

Read-out

How they separate

  1. 01

    Enhancement

    They land at almost the same point on the natty scale (1/10 vs 1/10): a similar distance beyond natural.

  2. 02

    Body load

    The widest gap at typical protocols is mood & sleep (Melatonin 1.6/10 vs 0/10).

  3. 03

    Coming off

    Neither requires PCT: both leave the natural testosterone axis running.

  4. 04

    Logistics

    DSIP runs as subcutaneous, Melatonin as oral; typical runs are 4-8 weeks vs 2-26 weeks.

Generated from each entry's data file. Descriptive, not a recommendation; nothing here is medical advice.

Full breakdownDSIP→Full breakdownMelatonin→

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