Semax vs Larazotide Acetate
Side-by-side comparison of key properties, dosing, and research.
Cognitive Enhancement
SemaxRecovery & Repair
Larazotide Acetate- Summary
- Semax is a synthetic heptapeptide derived from ACTH developed in Russia. It is a potent nootropic that enhances memory, focus, and provides neuroprotection. Approved in Russia for cognitive disorders, stroke recovery, and traumatic brain injury.
- Larazotide acetate is an 8-amino acid peptide (Gly-Gly-Val-Leu-Val-Gln-Pro-Gly) derived from Zonula Occludens Toxin (ZOT) of Vibrio cholerae. It paradoxically acts as a ZOT antagonist to close tight junctions and reduce intestinal permeability ('leaky gut'). It is the most advanced clinical compound targeting gut permeability directly.
- Half-Life
- Minutes (but effects persist for hours via BDNF induction)
- Local gut action; minimal systemic exposure
- Admin Route
- Intranasal, SubQ
- Oral
- Research
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- Typical Dose
- 0.25–1 mg (250–1000 mcg)
- 0.5-2 mg
- Frequency
- 1–2 times daily
- 3x daily
- Key Benefits
- Enhances memory and learning
- Improves focus and concentration
- Increases mental energy and motivation
- Provides neuroprotection via BDNF and NGF upregulation
- Reduces cognitive decline
- May alleviate ADHD symptoms
- Supports recovery from brain injury and stroke
- Fast-acting — effects within 30–60 minutes
- Approved in Russia for cognitive disorders and stroke recovery
- Directly reduces intestinal tight junction permeability
- Clinical efficacy in celiac disease (Phase 3 trials)
- Reduces systemic inflammation from gut permeability
- Targets root cause of leaky gut (Zonulin pathway)
- Local gut action without systemic absorption
- Potential application in IBS, IBD, autoimmune conditions
- Side Effects
- Headache (rare, often from higher doses)
- Anxiety or overstimulation at high doses
- Sleep disruption if dosed too late
- Irritability (uncommon)
- Headache (mild, dose-dependent)
- Nausea (rare)
- Well-tolerated overall in clinical trials
- Stacks With
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