Azithromycin (Zithromax, Azithrocin ) is an azalide, a subclass of macrolide antibiotics. Azithromycin is one of the world's best-selling antibiotics. It is derived from erythromycin, with a methyl-substituted nitrogen atom incorporated into the lactone ring, thus making the lactone ring 15-membered.

Clarithromycin is a macrolide antibiotic used to treat pharyngitis, tonsillitis, acute maxillary sinusitis, acute bacterial exacerbation of chronic bronchitis, pneumonia (especially atypical pneumonias associated with Chlamydophila pneumoniae), skin and skin structure infections. In addition, it is sometimes used to treat legionellosis, Helicobacter pylori, and lyme disease.

Azithromycin (Zithromax, Azithrocin ) is an azalide, a subclass of macrolide antibiotics. Azithromycin is one of the world's best-selling antibiotics.[1] It is derived from erythromycin, with a methyl-substituted nitrogen atom incorporated into the lactone ring, thus making the lactone ring 15-membered.

confirmation is by endoscopy and biopsy

confirmation of eradication was by endoscopy and biopsy

it was assessed by researcher and self report of patients. variables like nausea, vomiting and diarrhea. the prevalence of each treatment related complain was registered by taking history from patients.