Leaky Gut (Intestinal Permeability)
Increased intestinal permeability — the most common reason people look into gut-lining peptides.
'Leaky gut' (increased intestinal permeability) is where BPC-157 gets most of its gut-related attention: it was originally derived from a gastric protein and is most studied for gut-lining protection. KPV adds anti-inflammatory action relevant to inflamed mucosa.
The concept is more accepted in research than the term is in clinical practice. These are research compounds; persistent GI symptoms warrant a proper workup rather than self-treatment.
Compounds researched
Ranked by editorial relevance — a measure of how central each compound is to the conversation, not a claim of effectiveness.