PinnyPeptide

DSIP vs Orexin-B

Side-by-side comparison: effects, dosing ranges, side effects, regulatory status, and reconstitution.

Peptide A

DSIP

Sleep

Endogenous nonapeptide that promotes delta wave sleep and modulates neuroendocrine stress responses.

Peptide B

Orexin-B

Sleep

Wake-promoting neuropeptide selective for OX2R — the receptor most central to narcolepsy.

Typical vial

5 mg

Typical dose

100-300 mcg

Half-life

~7-8 minutes (rapidly degraded by aminopeptidases)

FDA status

Not FDA approved for human use. No clinical trials submitted…

Typical vial

5 mg

Typical dose

Variable (research) mcg

Half-life

~30 minutes

FDA status

Not FDA approved.

DSIP effects

  • Promotes delta wave (deep) sleep without suppressing REM
  • Modulates HPA axis to reduce cortisol during stress
  • Influences pain perception through opioid system interactions
  • May normalize blood pressure in hypertensive states
  • Exhibits neuroprotective properties under oxidative stress

Orexin-B effects

  • Selective activation of OX2R (over OX1R)
  • Promotes wakefulness and arousal
  • Stabilizes wake state (anti-cataplectic)
  • Modulates feeding behavior (less than OX1R-mediated)
  • Investigational target for narcolepsy treatment

DSIP side effects

  • Daytime drowsiness if taken at inappropriate times
  • Mild headache (uncommon)
  • Transient hypotension (rare)
  • Vivid dreams (frequently reported anecdotally)

Orexin-B side effects

  • Sleep disruption (intended effect)
  • Anxiety or restlessness at high doses
  • Limited safety data for chronic human use
  • Possible enhanced reward / addiction concerns

DSIP dosing ranges

Sleep support

100-300 mcg · Once daily, 30-60 minutes before bedtime (SubQ) · 2-4 weeks

Stress and cortisol modulation

100-200 mcg · Once daily (SubQ) · 2-4 weeks

Orexin-B dosing ranges

Animal research

Variable per protocol · ICV or IV · Per protocol

Full DSIP guide → Full Orexin-B guide →

DSIP vs Orexin-B — common questions

What is the difference between DSIP and Orexin-B?

DSIP: Endogenous nonapeptide that promotes delta wave sleep and modulates neuroendocrine stress responses. Typical dose 100-300 mcg. Orexin-B: Wake-promoting neuropeptide selective for OX2R — the receptor most central to narcolepsy. Typical dose Variable (research) mcg. Both fall under the Sleep category.

Can you stack DSIP and Orexin-B?

Stacking DSIP with Orexin-B is a protocol-design question best raised with a clinician — it depends on your goal, current bloodwork, and whether both peptides target overlapping mechanisms. Both peptides should be tracked independently with separate injection sites and timing. PinnyPeptide supports multi-peptide stacks with automatic injection site rotation.

Which is dosed more frequently, DSIP or Orexin-B?

DSIP is typically dosed: Once daily, 30-60 minutes before bedtime (SubQ) for Sleep support; Once daily (SubQ) for Stress and cortisol modulation. Orexin-B is typically dosed: ICV or IV for Animal research.

Are DSIP and Orexin-B FDA approved?

DSIP: Not FDA approved for human use. No clinical trials submitted for FDA review. Orexin-B: Not FDA approved.

Related peptide comparisons

dsip vs epithalondsip vs orexin-adsip vs pinealondsip vs pt-141dsip vs selankorexin-a vs orexin-b

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