Discuss the reason to selecting a type of therapy. Please support your decision to use “triple therapy consists of a proton pump inhibitor (PPI) as esomeprazole (Nexium) 20 mg PO daily bid, antibiotics as Clarithromycin (Biaxin) 500 mg PO bid, and Metronidazole 500 mg PO bid.” with current peer review literature. Is Metronidazole always the first drug used? what are the advantages of this method compared to the rest available?