The nurse is considering administering a medication for the client's concern of diarrhea. Which of the following medications is indicated to decrease diarrhea?

A. Docusate sodium (Colace): This is a stool softener and is used to treat constipation, not diarrhea. B. Sucralfate (Carafate): This medication is used to treat ulcers, not diarrhea. C. Omeprazole (Prilosec): This is a proton pump inhibitor, used to treat gastric acid-related conditions, not diarrhea. D. Loperamide (Imodium): Loperamide is an anti-diarrheal medication that slows down gut motility and is indicated to treat diarrhea.