The physician prescribes sucralfate (Carafate) for a client with peptic ulcer disease. When the client asks the nurse to explain the action of the medication, which of the following is the most...

The physician prescribes sucralfate (Carafate) for a client with peptic ulcer disease. When the client asks the nurse to explain the action of the medication, which of the following is the most accurate response?

1. Sucralfate blocks histamine receptors in the stomach.

2. Sucralfate covers the ulcer with a protective barrier.

3. Sucralfate inhibits gastric acid production.

4. Sucralfate makes gastric secretions less acidic.