This one actually has a nuanced answer based on the research literature.
For gut-specific effects: oral administration has shown meaningful results in animal studies. BPC-157 appears to be unusually resistant to gastric breakdown compared to most peptides, which is part of what makes it interesting. So for gut health specifically, oral is a reasonable route.
For systemic effects (joint healing, tendon repair, neurological): subcutaneous or intramuscular injection gets better bioavailability to systemic tissues. The peptide doesn’t have to survive the GI tract and gets into circulation more reliably.
So it’s not really oral vs. injection as a binary, it depends on your primary target. For your goals (gut health + general healing) you could make a case for either, or even both.
