Just about to begin taking mastic gum, etc. for my recently diagnosed gastritis.  Do any of these cause loose stools?  Mastic gum, DGL licorice, slippery elm, and OTC products that help with acid, such as Prilosec, Prevacid, etc.  I am prone to loose stools and really don't want to make the problem worse. I just want to find the 'right' product or products for me.  Suggestions welcome.  Thanks!