How can i treat this ?

Depends on diagnosis: Doctor can evaluate and help. GERD is one possibility. Gastroesophageal reflux disease is when the stomach contents comes back up into the esophagus too often, with or without feeling symptoms such as heartburn. A person with GERD should is helped with lifestyle improvements, avoiding vinegar and other acidic foods or liquids like juice or soda, plus using acid blockers to decrease acidity.