As I do not have PCS knowledge, I am adding this on the understanding that those who do may have more info.

2 natural remedies for peptic ulcers are:
Mastic Gum (Gum Mastica) which apparently eradicates the H Pylori that causes these stomach ulcers
DGL-liquorice root (powder or tablets) which actively coats and heals the ulcers (Please note it must be the DGL = deglycyrrhizinated form of liquorice root as the other form can cause increased blood pressure!)