PinnyPeptide

DNSP-11 vs Semax

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

Peptide A

DNSP-11

Cognitive

Eleven-amino-acid peptide derived from the GDNF prodomain — neuroprotective for dopamine neurons.

Peptide B

Semax

Cognitive

Neuroprotective ACTH analog with nootropic and neurotrophic properties.

Typical vial

5 mg

Typical dose

Variable (research-specific) mcg

Half-life

Short; precise value uncharacterized

FDA status

Not FDA approved.

Typical vial

5 mg

Typical dose

200-600 mcg

Half-life

~2-3 minutes (very rapid degradation; biological effects last hours due to downstream gene expression changes)

FDA status

Not FDA approved for human use. Approved in Russia for strok…

DNSP-11 effects

  • Dopaminergic neuroprotection in Parkinson's models
  • Increased dopamine production in dopaminergic neurons
  • Improved motor function in 6-OHDA and MPTP models
  • Mechanism distinct from full-length GDNF
  • Investigational for Parkinson's and related disorders

Semax effects

  • Upregulates BDNF and NGF expression for neuroprotection
  • Enhances memory formation, learning, and attention
  • Promotes neuronal survival after ischemic injury
  • Modulates serotonergic and dopaminergic neurotransmission
  • Supports optic nerve health and visual function

DNSP-11 side effects

  • Essentially uncharacterized in humans
  • Possible local tissue effects with intracerebroventricular delivery
  • Theoretical: off-target effects on non-dopaminergic neurons
  • Injection-site reactions

Semax side effects

  • Mild nasal irritation with intranasal administration
  • Occasional headache
  • Rare anecdotal reports of hair thinning at high doses
  • Mild dizziness in sensitive individuals

DNSP-11 dosing ranges

Research / Parkinson's models (preclinical)

Variable per protocol · ICV or peripheral routes · Per research design

Semax dosing ranges

Cognitive enhancement

200-600 mcg · Once or twice daily (intranasal) · 10-20 days per course

Neuroprotection / stroke recovery

600-1200 mcg · Two to three times daily (intranasal) · 10-14 days

Full DNSP-11 guide → Full Semax guide →

DNSP-11 vs Semax — common questions

What is the difference between DNSP-11 and Semax?

DNSP-11: Eleven-amino-acid peptide derived from the GDNF prodomain — neuroprotective for dopamine neurons. Typical dose Variable (research-specific) mcg. Semax: Neuroprotective ACTH analog with nootropic and neurotrophic properties. Typical dose 200-600 mcg. Both fall under the Cognitive category.

Can you stack DNSP-11 and Semax?

Stacking DNSP-11 with Semax 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, DNSP-11 or Semax?

DNSP-11 is typically dosed: ICV or peripheral routes for Research / Parkinson's models (preclinical). Semax is typically dosed: Once or twice daily (intranasal) for Cognitive enhancement; Two to three times daily (intranasal) for Neuroprotection / stroke recovery.

Are DNSP-11 and Semax FDA approved?

DNSP-11: Not FDA approved. Semax: Not FDA approved for human use. Approved in Russia for stroke recovery, cognitive impairment, and optic nerve disease.

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