That doesn mean the government is fully prepared, however, Levi said. The inactive ingredients are cornstarch, microcrystalline cellulose, silicon dioxide, crospovidone, magnesium stearate, hypromellose, titanium dioxide, and polyethylene glycol. Careful medical history is necessary since CDAD has been reported to occur over two months after the administration of antibacterial agents. Thus, active tubular secretion would seem to play significant role in its elimination. Adverse Laboratory Changes: Changes in laboratory parameters listed as adverse events without regard to drug relationship are listed below: Hepatic Elevations of ALT SGPT. Its empirical formula is C17H18FN3O3 and its chemical structure is as follows: Ciprofloxacin is 1-piperazinyl -3-quinolinecarboxylic acid. Remember that your doctor has prescribed this cipro alleric reaction medication because he or she has judged that the benefit to you is greater than the risk of side effects.