They act on entirely different axes
The homogenates were centrifuged at 500 g for 15 min
The high proline content (4 of 15 residues, including a triple Pro-Pro-Pro stretch at positions 3 to 5) gives BPC-157 unusually good resistance to gastric and intestinal proteases, which is why some published animal work uses oral administration
For pernicious anaemia or malabsorption, intramuscular hydroxocobalamin injections are the NHS standard treatment, bypassing gastrointestinal absorption issues
No published human randomized trial has tested the CJC-1295 (no DAC) + Ipamorelin combination at the daily 200-300 mcg doses common online
Aminoglycosides, tetracyclines, and certain other antibiotics may alter gut microbiota composition, potentially affecting the small amount of vitamin B12 that is produced by colonic bacteria, though this is generally not clinically significant for patients receiving injectable B12 supplementation