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Do Peptides Help with Brain Health: Peptide Class Comparison
The following table compares four peptide categories studied for cognitive enhancement, outlining mechanisms, administration routes, evidence strength, and practical considerations. Neurotrophic Peptides (Cerebrolysin, NGF analogs) BDNF/NGF receptor agonism, s
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- The following table compares four peptide categories studied for cognitive enhancement, outlining mechanisms, administration routes, evidence strength, and practical considerations.
- Neurotrophic Peptides (Cerebrolysin, NGF analogs)
- BDNF/NGF receptor agonism, synaptic remodeling
- IV infusion or subcutaneous
- High. Multiple RCTs in stroke recovery, dementia
- 10–30 mL IV over 20–60 min, 5 days/week × 4 weeks
- Gold standard for neuroprotection in clinical populations; limited data in healthy cognitive enhancement
- Peptidomimetics (Dihexa)
- HGF receptor activation, synaptogenesis
- Oral or subcutaneous
- Moderate. Strong preclinical data, limited human trials
- 5–10 mg oral twice daily or 1–2 mg subcutaneous daily
- Most potent synaptogenic agent in research; human safety data insufficient for widespread use
- Growth Hormone Secretagogues (MK 677)
- IGF-1 upregulation, mitochondrial support
- Oral
- Moderate. Sleep and metabolic benefits established; cognitive data correlational
- 10–25 mg oral once daily
- Indirect cognitive support via improved sleep quality and neuronal metabolism; not a direct nootropic
- Immune-Modulating Peptides (Thymalin)
- T-cell regulation, cytokine balance, reduced neuroinflammation
- Subcutaneous or intramuscular
- Low. Primarily Russian clinical data; no FDA trials
- 10 mg SC or IM daily × 10 days, repeated quarterly
- Promising for inflammation-driven cognitive decline; mechanistic rationale strong but evidence base weak by Western standards