bpc-157 stable in stomach acid Gastric Pentadecapeptide BPC 157 and Striated, Smooth, and Heart Muscle BPC-157 & The Gut-Brain Axis:

[9] During lactation, estrogens may reduce both the volume and protein content of breast milk, and trace amounts of estradiol can pass into milk

10.1016/S1044-7431(03)00160-X Mol

Summary: Excessive vitamin B12 intake rarely causes toxicity, but very high levels from supplements or injections may be associated with skin reactions such as acne-like eruptions, though serious adverse effects remain exceptionally uncommon

The 30-minute window before eating allows adequate time for the peptide to transit through the stomach and begin absorption in the small intestine

Beyond 8 weeks, diminishing returns set in and risk of tolerance increases