can bpc 157 cause diarrhea bpc-157 side effects Peptide: Potential, Precautions, and Why It's Still Experimental Best Peptides for Gut Health:

For subcutaneous injections, the abdominal site is preferred for most peptides due to the consistent subcutaneous fat layer thickness, proximity to the gut-associated lymphoid tissue (relevant for some anti-inflammatory peptides), and the practical convenience of self-administration in research settings

Tough or dense protein sources are particularly poorly tolerated, and many patients naturally gravitate towards softer, more processed foods that tend to be lower in essential micronutrients

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Oral peptide supplements are not regulated as prescription medicines and are not subject to strict quality controls