Semax vs Vesugen
Side-by-side comparison of key properties, dosing, and research.
- 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.
- Vesugen is a tripeptide bioregulator (Lys-Glu-Asp) developed by Professor Vladimir Khavinson, tissue-specific for blood vessels and the vascular endothelium. It supports endothelial cell function, promotes vascular wall integrity, and is studied for atherosclerosis prevention, vascular aging, and cardiovascular health maintenance. It is one of the more broadly applicable Khavinson bioregulators given the ubiquity of vascular tissue.
- Half-Life
- Minutes (but effects persist for hours via BDNF induction)
- Short (minutes); sustained gene-regulatory effects
- Admin Route
- Intranasal, SubQ
- SubQ, Oral
- Research
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- Typical Dose
- 0.25–1 mg (250–1000 mcg)
- 10 mg per day
- Frequency
- 1–2 times daily
- Daily for 10–30 days
- 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
- Supports vascular endothelial cell function and integrity
- May reduce endothelial inflammation and dysfunction
- Anti-aging effects on blood vessel walls
- Potential benefits in early atherosclerosis and vascular aging
- Supports nitric oxide-mediated vascular tone
- Reduces endothelial apoptosis from oxidative stress
- Complementary to Cardiogen and Epithalon in cardiovascular longevity protocols
- Side Effects
- Headache (rare, often from higher doses)
- Anxiety or overstimulation at high doses
- Sleep disruption if dosed too late
- Irritability (uncommon)
- Generally well tolerated
- Mild injection site reactions
- No significant vascular adverse events reported at standard doses
- Stacks With
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