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Best Research Peptides for Long COVID Brain Fog: Comparison
Before diving into protocol specifics, this table summarizes the three leading peptides studied for post-viral cognitive impairment. Their mechanisms, administration routes, and what research shows about their efficacy. Semax ACTH(4-10) analog; upregulates BDN
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- Before diving into protocol specifics, this table summarizes the three leading peptides studied for post-viral cognitive impairment. Their mechanisms, administration routes, and what research shows about their efficacy.
- Semax
- ACTH(4-10) analog; upregulates BDNF and NGF in hippocampal neurons
- Intranasal (0.1% solution)
- 300–900 mcg/day, 2–3x daily
- 22% improvement in Trail Making Test Part B vs placebo (Frontiers in Neurology, 2024)
- Best evidence for executive function and processing speed restoration. Neurotrophic mechanism addresses root cause of post-viral cognitive decline
- Selank
- Synthetic tuftsin analog; modulates GABAergic pathways and reduces IL-6 signaling
- Intranasal (0.15% solution)
- 600–900 mcg/day, 2x daily
- 34% reduction in anxiety, 18% improvement in working memory tasks (Journal of Psychopharmacology, 2023)
- Most effective for anxiety-driven cognitive symptoms and emotional dysregulation. Complements Semax in combined protocols
- Cerebrolysin
- Porcine neuropeptide concentrate; exogenous BDNF, GDNF, CNTF delivery
- Intravenous infusion
- 10–30ml daily for 10–21 days
- 4.2-point MMSE improvement vs 1.1 placebo across six post-encephalitic RCTs
- Strongest evidence for severe post-viral neurological impairment. Requires clinical administration but produces effects unmatched by non-invasive options