Abstract: Objectives: The ambition of this study is to find the mucoadhesive assets Pistacia lentiscus plant gum (mastic gum) by combining it into microspheres with Amoxicillin Trihydrate (ATH). Significance: Due its short stomach residence duration, ATH efficient against H. pylori but can be improved creating Mucoadhesive Microspheres (MMS) that keep trihydrate in stomach. In study, has been e...