A nurse is assessing a client who is on long term omeprazole therapy. Which of the following findings should indicate to the nurse the medication is effective?

A. Regular bowel movements: Omeprazole is a Proton Pump Inhibitor (PPI), not a laxative or stool softener. It does not target bowel regularity. B. Reduced dyspepsia: Omeprazole works by blocking the enzyme in the stomach wall that produces acid. It is prescribed for GERD (Gastroesophageal Reflux Disease) and ulcers. The therapeutic goal is to decrease gastric acid, thereby relieving symptoms like heartburn (dyspepsia) and acid reflux. C. Increased appetite: While reducing pain might secondarily improve appetite, increased appetite is not the direct indicator of the medication's pharmacological effectiveness. D. Absence of headache: Headache is actually a common side effect of omeprazole, not a symptom it treats.