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Common contaminants include bacterial endotoxins capable of triggering immune reactions, incomplete peptide chains from synthesis errors, residual solvents including trifluoroacetic acid, heavy metals, and microbial contamination from non-sterile handling

Am J Physiol 1996

shipping on orders over $175 For Research Use Only Not for Human Consumption Pentadecapeptide derived from a protective sequence in human gastric juice

Peptides vs other interventions Peptides compete with various other healing interventions

The data on its effects and safety are still limited and controversial