6 keys trinity ? <| sep |> Fluoroquinolone drugs can have very nasty side effects . Some can even last a lifetime . There is at least one name brand fluoroquinolone that is currently the subject of a class action lawsuit . They are very strong and should really only be used as the last line of defense when some bacterial infections won ' t go away . Usually doctors avoid prescribing them to people who are physically active play sports , lift weights , etc . as there is an increased risk of tendinitis and tendon rupture . There is also the possibility of prolonged effect on the central nervous system . What type of pain are you feeling ? Was there any sort of crack or pop that came before the pain ? Does it feel like muscular pain ? Is it a burning or tingling pain ? Even after taking this medication for just a week , it is not unheard of for people to develop such side effects . There are several other medications your doctor should have considered before prescribing you ciprofloxacin , and maybe there is a reason , but it is something you should definitely bring up with them as the cons of prescribing fluoroquinolones often outweighs the pros for most bacterial infections . Please go and see a doctor though . I wish you all the best .