In addition, it is now recommended that metronidazole or tinidazole also be given, to cover the possibility of trichomonas, which can be difficult to diagnose, especially in men. For continued persistence or recurrence thereafter, the drug
moxifloxacin (Avelox) is sometimes used, to cover the possibility of an infection with Mycoplasma genitalium, which can be resistant to both doxy and azithromycin.