I m pretty sure I m having a reaction to ciprofloxacin. I have terrible joint pain, can hardly walk or get up or down. My knees feel like they are locking up. Was released from hospital with this drug and only took 1 day and night before stopping as symptoms started. Am not at home and cannot get into a doctor other than going back to ER. Was in hospital for 4 days for stomach virus and viral infection, dehydration, kidneys getting bad, etc Trying to fine out how long this may Kat s or if I need something to counteract it?