thanks for posting your query. From your symtoms it appears that longstanding gastric problem like gastro esophageal reflux disese could be the cause of your throat irritation
ot it might be due to infection.
Your doctor has prescibed Cepodem which is an antibiotic, Calpol
for pain and Parit which is a proton pump
inhibitor used in the treATMENT OF REFLUX DISEASE. It is good that your gastric problems are under control with diet.
The medications that your doctor has prescribed will clear up any infection and irritation.
hope you get well soon