Reversible neutropenia; elevated bilirubin, AST, ALT & ALP; increased serum creatinine or BUN conc; exfoliative dermatitis, bullous dermatitis, SJS & TEN; Rash, flare, facial flushing, Hypotension, wheezing, dyspnea, urticaria, pruritus, rapid infusion may also be associated w/ pain & muscle spasm of the chest & back or red neck or red man syndrome. Maculopapular rash, purpura (purpuric eruption), follicular eruption; jaundice; rash.