Ciprofloxacin
"Urologist prescribed Cipro 250 mg for 30 days for elevated PSA.  Stopped taking it after two weeks due to side effects and after researching PSA testing.  The side effects were scary and horrible.  Back, neck and shoulder discomfort, tiredness, unable to concentrate.  Still have some lingering neck and back discomfort even after 3 days of not taking cipro.  
Stay away from Cipro and especially urologists who prescribe Cipro and similar medication for elevated PSA and insisting on additional PSA tests.  Research PSA testing.  PSA testing cannot tell whether a man would have prostate cancer or what type of prostate cancer.  PSA testing is an insidious way for profit hungry urologists to recommend prostate biopsy, which will ruin life."