Old man with night-time c...

A 55-year-old man with history of hypertension and diabetes presents with intermittent night-time cough for a few months. He states he often has a "weird taste'' in his mouth a couple of hours after eating and is afraid of eating dinner because he gets terrible heartburn during the night. He states he has tried over the counter antacid, and this has worked to somewhat alleviate his symptoms; however, his night-time cough is still very bothersome. His vitals in office are within normal limits and physical examination is positive for epigastric tenderness upon palpation.