Hopefully others can chime in as I've never tried to heal an infection with BPC. I've never noticed any significant benefits from using BPC but I'm still on it because of FOMO. KPV as well.
Glutathione, on the other hand, has done wonders for me. I dropped the bar on my thigh a few weeks ago, and my leg was swollen and bruised and just would not heal at all. It was extremely inflamed and painful. I started Glutathione shots a few days ago and my leg's almost completely healed now - I can't believe it even as I say it. I suspect it's reduced the inflammation on my leg, but the change was quite dramatic.