It can be taken as an oral pill or injection, and its available from gray-market sellers online
Reconstitution: The Basics Choosing Your Dilution The amount of bacteriostatic water you add determines the concentration of your solution: 250mg vial options: 2.5mL water = 100mg/mL (1mL = 100mg) 5mL water = 50mg/mL (1mL = 50mg) 10mL water = 25mg/mL (1mL = 25mg) Recommendation: For most research purposes, a 5mL dilution (50mg/mL) provides a good balance of manageable injection volumes and precise dosing
For milder vitamin B12 deficiency, where circumstances make delay difficult, there may be room for discussion of enhanced perioperative supplementation (such as intramuscular B12 close to surgery and continued through recovery)
Clinical trials are necessary to determine the appropriate dosage for humans
BPC-157 accelerates healing but cannot regenerate severely degenerated structures, overcome major structural abnormalities, or replace the need for rehabilitation
While its unlikely that your animals can overdose on B12, a blood test or other diagnostic tests used by veterinarians can help rule out other issues that may cause symptoms instead