Final answer:
Sucralfate (Carafate) acts locally in the body by forming a protective barrier over ulcers in the stomach and duodenum.
Step-by-step explanation:
Sucralfate (Carafate) acts locally in the body.
Sucralfate is a medication used to treat ulcers in the stomach and duodenum. It works by forming a protective barrier over the ulcer, helping it to heal. The medication is not absorbed into the bloodstream, so it does not have systemic effects.