"We made a special kind of patch that sticks to the stomach lining and slowly releases medicine to treat infections. We used chitosan, a natural substance, and PAA to help it stick. The patch contains three medicines: amoxicillin trihydrate, metronidazole, and famotidine. We made it by mixing these ingredients together and spreading them out to dry. We experimented with different amounts of ingredients like glycerol, chitosan, and PAA to find the best combination for making the patch. We tested things like weight, thickness, and strength to make sure the patch would work well.