Understand the source comparison
Best Peptides for CIRS: Mechanism Comparison
BPC-157 VEGF modulation, nitric oxide signaling, tight junction protein synthesis Gut barrier restoration, reduced intestinal permeability, decreased systemic LPS translocation 250–500 mcg SC twice daily 4–8 weeks for barrier markers to normalize (zonulin, lac
No winner is assigned.
This page preserves a source comparison for education. It does not add a rating, recommendation or clinical judgment.
- BPC-157
- VEGF modulation, nitric oxide signaling, tight junction protein synthesis
- Gut barrier restoration, reduced intestinal permeability, decreased systemic LPS translocation
- 250–500 mcg SC twice daily
- 4–8 weeks for barrier markers to normalize (zonulin, lactulose/mannitol ratio)
- First-line for gut-dominant CIRS. Addresses root cause of systemic inflammatory burden from translocation
- Thymosin Alpha-1
- T-cell differentiation, dendritic cell maturation, Th1/Th2 rebalancing
- Corrects Th2 skew, enhances NK cell function, improves pathogen clearance
- 1.6 mg SC twice weekly
- 8–12 weeks to see immune panel changes (CD4/CD8, IFN-gamma)
- Essential for immune-dominant CIRS or patients with recurrent infections post-exposure
- VIP (Vasoactive Intestinal Peptide)
- VPAC receptor binding, cytokine modulation, hypothalamic regulation
- Lowers C4a, reduces TGF-beta-1, improves MSH, restores leptin sensitivity
- 50 mcg intranasal 4× daily
- 6–12 weeks for biomarker improvements (C4a, VCS, NeuroQuant volumetrics)
- Most CIRS-specific peptide. Directly corrects VIP deficiency measurable in 92% of patients
- Cerebrolysin
- Neurotrophic factor mimetic, synaptic plasticity enhancement
- Neuroinflammation reduction, hippocampal volume preservation, improved executive function
- 5–10 mL IV 2–3× weekly
- 4–6 weeks for subjective cognitive improvement, 12+ weeks for MRI changes
- Best for neuro-dominant CIRS with documented gray matter loss or severe brain fog
- Dihexa
- Angiotensin IV analog, BDNF signaling amplification
- Synaptogenesis, memory consolidation, cognitive processing speed
- 5–10 mg oral daily
- 2–4 weeks for noticeable cognitive shifts
- Faster-acting than Cerebrolysin for subjective cognition, but less neurostructural data