Asthenia, fatigue, malaise; anaphylaxis; wt changes; severe dermatologic reactions including, erythema multiforme, Stevens-Johnson syndrome & TEN & angioedema (Quincke's edema); rhabdomyolysis, bone fracture; interstitial nephritis; hepatocellular damage leading to jaundice & hepatic failure; hallucinations, confusion, insomnia, somnolence; hyponatremia, hypomagnesemia,
C. difficile-associated diarrhea; pancytopenia, agranulocytosis; ageusia, dysgeusia.