As with any treatment, its important to work closely with a healthcare professional to determine the best approach
Gut: BPC 157 helps heal gastrointestinal lesions, the pancreas, liver injuries, cells in blood vessels, heart damage, and pseudoarthrosis (a fracture healing disorder which takes longer than normal to heal) (Chang CH, 2011)
Here's the TL;DR on vitamin timing: while there is no official medical advice dictating that you should take vitamin supplements at a specific time of day to improve their efficiency, there is quite a lot of research showing that avoiding some vitamin supplements at particular times (or more accurately, with particular meals) can improve absorption, or that taking some vitamins alongside food can reduce the risk of adverse side effects
The most-reported starting protocol in this community is 1 mL, twice weekly
This can be a preferred format for individuals who want a fast, convenient