“…These mechanisms include hypersensitivity, allergic reaction, direct toxic effect, increased oxygen free radical production, suppression of the antioxidant defense mechanism, and chemical-induced inflammation. 4) 5) Approximately 30 drugs are believed to cause pleural disease, and development of pleural fluid eosinophilia has been reported in association with therapy with the following drugs: dantrolene, nitrofurantoin, fluoxetine, warfarin, gliclazide, propylthiouracil, isotrentinoin, mesalamine, bromocriptine, valproic acid, tinazidine, and antibiotics such as penicillin, ceftriaxone, and streptomycin. 2) 3) The presence of eosinophilia in pleural fluid may provide a clinical clue to the presence of drug-induced pleural disease but its presence or absence is not specific.…”