Erythromycin 500mg Tablets are used to treat various bacterial infections, including respiratory tract infections, skin infections, and sexually transmitted infections. As a macrolide antibiotic, erythromycin works by inhibiting bacterial protein synthesis, which prevents bacteria from growing and multiplying. Typically taken every 6 to 12 hours, depending on the infection, common side effects include nausea, vomiting, and abdominal pain. It is important to complete the entire course of the medication to prevent the development of antibiotic-resistant bacteria. Avoid taking it with certain other medications, as it can interact with them. Always follow your healthcare provider’s instructions and consult them if you experience any unusual symptoms or side effects.