Understand the source comparison
Best Peptides for Radiation Protection: Mechanism Comparison
Thymalin Thymic epithelial growth factor upregulation → T-cell differentiation Bone marrow, thymus, lymphoid tissue 24–72 hours (optimal); effective up to 7 days Strong. Multiple controlled animal studies; Russian clinical data in radiation workers Best suppor
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- Thymalin
- Thymic epithelial growth factor upregulation → T-cell differentiation
- Bone marrow, thymus, lymphoid tissue
- 24–72 hours (optimal); effective up to 7 days
- Strong. Multiple controlled animal studies; Russian clinical data in radiation workers
- Best supported for acute immune recovery; requires multi-day dosing protocol
- Epitalon
- Telomerase activation via hTERT gene expression → telomere elongation
- All dividing cells; lymphocytes most studied
- 48 hours to 2 weeks (delayed benefit)
- Moderate. Mechanism well-characterised; human radiation data limited
- Strongest theoretical basis for long-term genomic protection; effect cumulative
- TB-500
- Actin sequestration + VEGF upregulation → tissue repair and angiogenesis
- GI mucosa, lung epithelium, endothelium
- 1–8 weeks (sub-acute phase)
- Moderate. Animal radiation injury models; no human RCT data
- Most effective for radiation-induced fibrosis and tissue remodeling; not for acute phase
- BPC-157 (comparator)
- Nitric oxide modulation + growth factor stabilisation
- GI tract, vascular endothelium
- 24 hours to 4 weeks
- Limited. Gastric protection data; radiation-specific studies sparse
- Adjunct role in GI radiation injury; insufficient standalone evidence