Understand the source comparison
Peptides for Brain Fog: Quality, Preparation, and Storage Comparison
Cerebrolysin NGF/BDNF mimetic. Synaptic remodeling and acetylcholine synthesis 5–30mL IV or IM, 2–3x weekly Refrigerate 2–8°C; avoid freezing Pre-mixed solution. Use within 28 days after opening Strong clinical evidence in MCI and dementia; requires IM/IV admi
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- Cerebrolysin
- NGF/BDNF mimetic. Synaptic remodeling and acetylcholine synthesis
- 5–30mL IV or IM, 2–3x weekly
- Refrigerate 2–8°C; avoid freezing
- Pre-mixed solution. Use within 28 days after opening
- Strong clinical evidence in MCI and dementia; requires IM/IV administration; best for neuroplasticity-driven fog
- Dihexa
- HGF receptor agonist. Potentiates BDNF/TrkB signaling
- 1–5mg oral or subcutaneous daily
- Store powder at −20°C; reconstituted at 2–8°C
- Use within 30 days after reconstitution with bacteriostatic water
- Preclinical evidence strong; human data limited; oral bioavailability uncertain; best for hippocampal-dependent memory deficits
- P21
- CREB modulator. Enhances LTP and memory consolidation
- 5–20mg subcutaneous, 2–3x weekly
- Store lyophilized at −20°C; reconstituted at 2–8°C
- Stable 28 days refrigerated after reconstitution
- Mechanism well-established; human trials absent; best for learning and memory consolidation deficits
- Thymalin
- Immune regulator. Reduces systemic inflammation and cytokine release
- 5–10mg subcutaneous or IM, 2–3x weekly
- Use within 28 days after reconstitution
- Indirect cognitive benefit via immune modulation; best for post-viral or autoimmune-related brain fog
- Cartalax
- Mitochondrial bioregulator. Enhances ATP synthesis
- 10–20mg oral or sublingual daily
- Store powder at room temperature; stable in solution
- Stable 30 days at room temperature after reconstitution
- Evidence limited to bioregulator class studies; best for fatigue-dominant cognitive impairment