Well Researched

Semax

Synthetic ACTH Analog | Cognitive Enhancement Peptide

Semax is a synthetic heptapeptide derived from adrenocorticotropic hormone (ACTH) fragment 4-10, extensively studied for its nootropic, neuroprotective, and neurorestorative properties. Originally developed in Russia for stroke recovery, this brain-targeted peptide rapidly increases BDNF levels and modulates dopaminergic and serotonergic systems to enhance cognitive function, memory, and focus.

Daily dose

300-1000mcg

Frequency

1-3 times daily

Cycle length

2-4 weeks on, 1-2 weeks off

Storage

Refrigerated 2-8°C

Key benefits

Rapid brain delivery, extensive clinical research, easy self-administration, excellent bioavailability to brain regions

How it works

Direct transport through olfactory epithelium and trigeminal nerves, bypassing blood-brain barrier for enhanced CNS penetration

Dosage protocols

Goal

Cognitive enhancement (healthy adults)

Dose

300-600mcg · 1-2 times daily

Route

Intranasal spray/drops

Goal

Learning and memory support

Dose

600-900mcg · 2-3 times daily during study periods

Route

Intranasal spray/drops

Goal

Recovery from brain injury

Dose

900-1500mcg · 2-3 times daily

Route

Intranasal drops (clinical supervision)

Goal

Anti-fatigue cognitive support

Dose

400-800mcg · Single morning dose

Route

Intranasal spray

Research indications

cognitive

Memory Enhancement — Improved short-term and working memory performance in fatigued individuals and healthy subjects

Attention and Focus — Enhanced sustained attention during demanding cognitive tasks and prolonged work periods

Learning Acceleration — Faster acquisition of new information and improved retention in educational and training settings

neuroprotective

Stroke Recovery — Accelerated restoration of brain functions and improved rehabilitation outcomes in ischemic stroke patients

Brain Trauma Support — Neuroprotective effects against various forms of brain injury and oxidative stress

Neurodegenerative Prevention — Potential protective effects against amyloid aggregation and age-related cognitive decline

neuroplasticity

BDNF Upregulation — Rapid increase in brain-derived neurotrophic factor supporting neurogenesis and synaptic plasticity

Neural Connectivity — Enhanced default mode network activity and improved inter-brain region communication

Stress Resilience — Improved adaptation to chronic stress and enhanced cognitive flexibility under pressure

Administration

nasal

injectable

Interactions

Use Caution

NA-Semax-Amidate — Enhanced version of same peptide - do NOT use simultaneously. Choose one or the other based on desired duration and potency

Synergistic

Selank — Complementary anxiolytic effects while Semax provides cognitive enhancement

Compatible

BPC-157 — No known negative interactions, both support neuroplasticity through different mechanisms

Compatible

TB-500 — Both support brain health and recovery, can be used together for comprehensive neuroprotection

Monitor Combination

Stimulants — May enhance effects of stimulants - monitor carefully and reduce stimulant doses when combining

Use Caution

MAO-Inhibitors — Theoretical risk due to monoamine system effects - consult healthcare provider before combining

Safety notes

Start with lowest effective dose (300mcg) to assess individual response

Avoid concurrent use with other intranasal medications that cause vasoconstriction

Monitor for any signs of nasal irritation, bleeding, or persistent discomfort

Do not exceed 4-week continuous use periods without medical supervision

Potential to enhance effects of stimulants - reduce other stimulant doses accordingly

Research studies

Stroke Recovery Clinical Trial (2018)

Human | 110 patients | Semax + conventional therapy | Ischemic stroke recovery

Patients recovering from ischemic stroke who received Semax showed increased BDNF levels correlated with early rehabilitation and accelerated restoration of brain functions, especially movement-related symptoms.

fMRI Default Mode Network Study (2018)

Human | 24 participants | Single dose intranasal | Brain imaging analysis

Healthy middle-aged participants showed increased fMRI default mode network activity relative to placebo, indicating enhanced neural connectivity and cognitive processing.

Neuroprotective Effects in Brain Ischemia (2014)

Animal | Rat focal ischemia model | Gene expression analysis | 3-24 hours post-treatment

Genome-wide study revealed Semax affected expression of 96 genes related to immune and vascular systems, demonstrating immunomodulating effects and influence on vascular system during ischemia.

Cognitive Enhancement in Fatigued Workers (1996)

Human | 250-1000μg intranasal | Single dose | 24-hour observation

Healthy subjects performing 8-hour work shifts showed significant improvement in attention and short-term memory, with 71% accuracy on memory tests vs 41% in controls. Effects were most pronounced when subjects were fatigued.

Related compounds

NA Semax Amidate Adamax Cerebrolysin Dihexa