how long does it take for clarithromycin to work

Clarithromycin, a macrolide antibiotic, typically starts working and killing bacteria from the moment you take it, but noticeable improvement in symptoms usually takes a few days. For most infections, people feel better within a few days of starting clarithromycin. However, certain conditions like skin infections (e.g., cellulitis) may require about 7 days of treatment before significant improvement is seen. For Helicobacter pylori infections, it could take longer for symptoms to improve, often after completing a course along with acid-reducing medication. It is important to complete the prescribed course even if you feel better earlier to prevent the infection from returning. If symptoms do not improve within 3 days for chest infections or 7 days for skin infections, or if the condition worsens, contacting a doctor is advised.