A 55-year-old woman presents to her primary care physician with complaints of burning epigastric pain for the past 3 weeks. The pain worsens after meals and is associated with nausea and occasional bloating. She denies vomiting, hematemesis, or melena. She has a history of osteoarthritis and takes ibuprofen daily for pain. She is a non-smoker and denies alcohol or drug use. Upper gastrointestinal endoscopy shows a gastric ulcer, and biopsy tests are negative for Helicobacter pylori. Question: Which of the following is the most appropriate therapy to promote healing of this patient’s gastric ulcer?