Source comparison
BPC-157 Research Breastfeeding Considerations: Comparison of Peptide Transfer Risk Factors
Molecular Weight 1,419 Da Below 1,500 Da threshold suggests limited passive diffusion Lower MW theoretically favours minimal transfer Favourable but not deterministic. Active transport pathways unknown Lipid Solubility Low (charged residues present) Hydrophili
This comparison does not assign a generated winner or score.
- Molecular Weight
- 1,419 Da
- Below 1,500 Da threshold suggests limited passive diffusion
- Lower MW theoretically favours minimal transfer
- Favourable but not deterministic. Active transport pathways unknown
- Lipid Solubility
- Low (charged residues present)
- Hydrophilic peptides cross lipid membranes poorly
- Reduces passive diffusion into milk
- Favourable. But mammary active transport not characterised
- Protein Binding
- Unknown in humans
- High binding reduces free fraction available for transfer
- Could limit transfer if binding is extensive
- Cannot assess without human PK data
- Elimination Half-Life
- Undocumented in humans
- Longer half-life increases cumulative infant exposure
- Unknown steady-state kinetics in lactating subjects
- Critical data gap. Unpredictable accumulation risk
- Tissue Distribution
- Concentrates in gastric mucosa (animal data)
- Active uptake suggests non-passive kinetics
- Mammary tissue may concentrate peptide
- Unfavourable. Suggests potential for milk enrichment
- Infant GI Stability
- Likely stable (proline-rich sequence)
- Resistant to proteolysis may allow systemic infant absorption
- Neonatal gastric pH near-neutral favours absorption
- Unfavourable. Intact absorption increases systemic infant exposure