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Peptides for Social Anxiety Disorder Protocol Evidence Guide: Comparison
Before selecting research compounds, understand how peptide mechanisms align with the specific neural substrates implicated in social anxiety disorder versus general anxiolysis. Selank GAD65/67 upregulation (increases GABA synthesis) Amygdala GABAergic hypofun
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- Before selecting research compounds, understand how peptide mechanisms align with the specific neural substrates implicated in social anxiety disorder versus general anxiolysis.
- Selank
- GAD65/67 upregulation (increases GABA synthesis)
- Amygdala GABAergic hypofunction, anticipatory threat processing
- Moderate. One RCT in GAD, multiple preclinical anxiety models
- Intranasal (0.15% solution)
- Best-supported anxiolytic peptide with documented human use; mechanism directly addresses inhibitory deficits in fear circuitry
- Dihexa
- HGF/c-Met activation (promotes BDNF signalling and dendritic spine formation)
- Prefrontal cortex synaptic plasticity, fear extinction learning
- Low. Robust preclinical data, zero human psychiatric trials
- Subcutaneous injection or intranasal
- Strongest neuroplasticity signal but entirely investigational in humans; potency raises safety questions
- Semax
- Melanocortin receptor modulation (normalises HPA axis feedback)
- Cortisol dysregulation, autonomic hyperarousal
- Moderate. Regulatory approval in Russia/Ukraine, limited anxiety-specific trials
- Intranasal (0.1% solution)
- Established human safety profile but minimal SAD-specific evidence; best for HPA-driven anxiety phenotypes
- Cerebrolysin
- Neurotrophic factor cocktail (contains BDNF, NGF, CNTF)
- General neuroprotection, cognitive function under stress
- Low. Extensive stroke/dementia data, no anxiety trials
- Intravenous or intramuscular injection
- Indirect relevance; neuroplasticity support may aid extinction learning but not a primary anxiolytic
- Thymalin
- Thymic peptide (immune modulation, indirect neuroendocrine effects)
- Stress-induced immune dysregulation, inflammatory cytokines
- Very low. Immunomodulatory focus, speculative psychiatric application
- Subcutaneous injection
- Relevant only if SAD phenotype includes chronic stress-related inflammation; no direct anxiolytic mechanism