“…A second patient was treated with clarithromycin (500 mg/day for 5 months), with progressive improvement; however, it was necessary to stop the therapy because of persistent nausea [15]. Clarithromycin monotherapy was subsequently used in some anecdotical cases or very small groups of patients at daily doses ranging from 500 mg to 1 g, and for changeable length (from 12 to 281 days, although most authors used the drug for 2-3 months) [12,16,17,18,19,20,21,22,23,24,25,26,27,28]. In most of the patients, except for rare cases in whom clarithromycin was employed at a dose of 1 g/day [13,25,26,27], complete recovery was observed.…”