Monitor QTc in patients with increased risk.
Monitor creatinine BUN in patients with impaired renal function.
Monitor serum magnesium levels, hematopoietic, renal and hepatic functions.
Perform serologic syphillis testing upon diagnosis of gonorrhea with follow-up testing 3 months after initiation.
Perform ophthalmologic evaluations in patients reporting visual disturbances.
Clostirdioides difficile overgrowth patients with diarrhea.