Tolerance of Intravenously Administered Ciprofloxacin

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Abstract
Twelve healthy volunteers received single doses of 200, 300, and 400 mg ciprofloxacin intravenously (30-min infusion). Crystals appeared in the urine of only 1 subject after the 400 mg dose. The crystals appeared in the 0-2 h urine specimen only and were observed immediately upon voiding while the urine was maintained at 37.degree.C. The pH of the urine was 7.3. The event was without untoward consequences to the person as evidenced by urinalysis and blood chemistry. Local skin reactions occurred on the arm of the infusion (cutaneous erythema, itching and burning sensation). The reactions were less after the lowest dose. The reactions started within minutes after the beginning of the infusion and disappeared either during the infusions or immediately after the end of administration. These local reactions were of moderate degree and did not necessitate termination of the infusion.