The Global Health Trax enzymes is a terrible choice for enzymes because it contains ‘unnatural’ enzymes which are not normally produced by the human body.
Digestive Grape Bitters is a natural and much better choice than any other because it allows your body to make its own enzymes in the types and amounts needed with each meal.
Mastic gum shows an antimicrobial activity against bacteria, so being a natural antibiotic, I would expect it to destroy both good and bad bacteria.