most popular bpc 157 BPC-157 – Research Peptide BPC-157 Before and After: Benefits,
Description
This can help reduce damage caused by clots in your lungs (pulmonary embolism), brain (stroke), heart (heart attack), or other blood vessels (thrombosis)

PMID 23604131

The foam itself is not harmful, but it means peptide molecules are trapped at the air-liquid interface, which is a suboptimal state

The extracellular adherence protein (Eap) of Staphylococcus aureus acts as a proliferation and migration repressing factor that alters the cell morphology of keratinocytes