Table 1. Different treatment regimens for Helicobacter pylori gastritis treatment .

Different treatment regimens for Helicobacter pylori gastritis treatment [13]

Regimen	Drugs	Duration
Triple therapy	1-Proton pump inhibitor (PPI), 2-Amoxicillin (1 g twice daily)  ( substitution of amoxicillin with metronidazole (500 mg twice daily) only in penicillin-allergic individuals, since metronidazole resistance is common which reduce the efficacy of treatment) and 3-Clarithromycin (500 mg twice daily)	For 10 days to two weeks
Quadruple therapy can be used as initial therapy, it is recommended in the retreatment	1-PPI twice daily, 2-Bismuth (525 mg four times daily), 3-Two antibiotics ( metronidazole 250 mg four times daily and tetracycline 500 mg four times daily) Or  With a commercially available combination capsule containing bismuth subcitrate, metronidazole, and tetracycline four times daily	For 10 to 14 days.
Rescue therapy	Levofloxacin (250 mg), Amoxicillin (1 g), and a PPI each given twice daily	For two weeks