It is a symptom of indestion.There is abnormal acid in stomach which results in sour eructations, burning, and pain in abdomen.Acid fruits and sour things should be avoided soda bi carb or soda water should be taken.
Calcarea Carb: Chief remedy, specially suited to fat, flabby persons.
Sulphuric Acid 6 30: When there is hicough, sour smell from the body, burning and sour eructations.
Robinia: When there is sour sweat, greenish vomit, burning, sour eructations.
Natrum Phos 6x: Very effective.Take powder or tablets dry on tongue 2-3 times a day.
Argentum Nit: When the appetite is increased there is craving for sweet things eructations.
Kali Carb: Suitable for old persons.
Carbo Veg: When there are gases in abdomen , eructations.
Lyco: When there is dark urine, flatulence.
Sulphur: In chronic cases.
Due to acidity the mucus membrane of stomach is often ulcerated.There is pain and burning.The pain is often relieved by taking some food but after some time it recurrs.
Hydrastis 6 or 30: The head remedy, Medicines suggested under acidity should be tried.NATRUM PHOS, SULPHURIC ACID ANACARDIUM, KALI BICH are also indicated.