8Amoxil (generic: amoxicillin) is a widely used penicillin‑type antibiotic that treats infections caused by bacteria—it does not work against viruses like colds or the flu . --- 🔬 Common Uses of Amoxil According to reputable sources like Drugs.com, MedlinePlus, Cleveland Clinic, and NHS, amoxicillin is prescribed for a variety of bacterial infections: Upper respiratory tract infections: tonsillitis, strep throat, sinusitis, bronchitis Lower respiratory infections: pneumonia Ear infections: acut