AMOXICILLIN Syrup is a penicillin antibiotic. It's a drug that's used to treat bacterial infections. It is ineffective against colds, flu, and other viral infections. It's used to treat bacterial illnesses like pneumonia and dental abscesses in the chest and mouth. It can also be used to treat stomach ulcers in combination with other antibiotics and medications. It is commonly used to treat ear infections and chest infections in youngsters. Even in older individuals, amoxicillin, the antibiotic commonly prescribed for persistent coughs caused by uncomplicated chest infections.