Ritemed Erythromycin 500mg tablets are a prescription antibiotic used to treat a wide range of bacterial infections, including respiratory tract infections, skin infections, and some sexually transmitted infections. Erythromycin works by stopping the growth of bacteria, helping your body fight off the infection. Always follow your doctor's prescribed dosage and complete the full course of treatment for the best results. Consult your physician to determine if Ritemed Erythromycin is the right antibiotic for your specific condition.