A nurse is collecting data from a client who has been taking esomeprazole for several months. Which client statement should the nurse identify as indicating effectiveness of the medication?

Esomeprazole is a proton pump inhibitor that provides profound suppression of hydrochloric acid secretion by the gastric parietal cells. By maintaining a more neutral gastric pH, it prevents the chemical irritation of the mucosal lining and allows erosive lesions to heal. Its effectiveness is measured by the resolution of acid-related symptoms in the upper gastrointestinal tract. A. "I can move my joints more easily.": Joint mobility is unrelated to gastric acid suppression and is typically monitored during treatment for inflammatory arthritis. Esomeprazole has no pharmacological effect on synovial inflammation or cartilage repair. This statement would be relevant for NSAIDs or corticosteroids. B. "My feet are no longer sore and itchy.": These symptoms suggest a dermatological or peripheral vascular issue rather than a gastrointestinal disorder. Esomeprazole does not treat cutaneous infections or neuropathic discomfort. There is no biological link between PPI therapy and the resolution of pedal pruritus. C. "My bowel movements have increased in frequency.": Increased bowel frequency is not a therapeutic goal of PPI therapy and may actually indicate a side effect like diarrhea. The medication targets acid production, not intestinal transit speed. Effectiveness is defined by the absence of pain, not a change in defecation. D. "I don't have pain in my stomach anymore.": The primary indication for esomeprazole is the relief of epigastric burning and dyspepsia associated with GERD or ulcers. A report of zero pain indicates that the drug has successfully neutralized the acidic environment and facilitated mucosal recovery. This is the desired therapeutic outcome.