buccal glutathione liposomal Quicksilver Scientific - Superior Absorption Oral Glutathione Supplement for Detox & Immune Support Liposomal Glutathione 1500mg, Oral Glutathione

Injectable BPC-157 enters systemic circulation and provides broader anti-inflammatory benefits, which can support gut healing indirectly but for direct mucosal repair, oral is the stronger choice

GRAS safety assessment Stier H et al

Other strains of probiotics have specific benefits, like Lactobacillus rhamnosus GG, which works in the small intestine to help relieve occasional gas, bloating, and abdominal discomfort, and Bifidobacterium lactis HN019, which works in the large intestine to help relieve occasional constipation and irregularity

The peptides referenced are research compounds and are not FDA-approved for the uses discussed