Has anyone tried mastic gum(pistacia lentiscus)? I'm taking it to lower H. pylori bacteria, which i believe i have because my ulcer is slow to heal and keeps coming back. I've been taking jarrow's mastic gum @ 500mg x3 aday some withfood and some without. I have stomach dis comfort when I take them. If anyone has taken this before and has anything to share please do so.