Since your current combination of Sompraz D and Histac 300 hasn?t fully relieved your acidity after 10 days, please do not self-medicate with alternatives. Persistent symptoms require a doctor?s evaluation to rule out conditions like H. pylori infection, ulcers, or severe GERD. Your doctor may consider switching you to a different proton pump inhibitor (like Rabeprazole or Pantoprazole) or suggest an endoscopy to investigate further. For immediate, temporary relief, you can ask your doctor about adding an antacid gel. Please consult your physician to safely modify your treatment plan.