Delivery was fast and efficient. Mastic gum helped my gastrointestinal problem despite doctors saying they could find nothing wrong. Continuous pain in upper right quadrant; underneath rib, upper right back and lower right side (felt like something scraping inside my colon). After a week of taking Mastic Gum the reduction in symptoms was incredible. Slight nausea for the first few days but it subsided. Took 2 first thing in the morning and 2 before bed for one month. Reduced to 2 x am only with return of symptoms.