Enterococcus faecalis is reliably susceptible:
Most Enterococcus faecium are resistant to penicillin, ampicillin and may be resistant to vancomycin (VRE).
Variably susceptible:
 Fluoroquinolones
Tetracycline.
Aminoglycosides are used for synergy if no high-level resistance and some invasive infections such as endocarditis.
If urinary isolate, most are nitrofurantoin susceptible but should only be used for cystitis.
