Yes, especially in people over 60: “fluoroquinolone-associated Achilles tendon rupture”.
http://www.medscape.com/viewarticle/410546_3
Cipro is probably not the best choice for an emergency kit once you get to my age or older (although I would certainly use it in a life and death situation).
Cipro is the only one I can use. If I had to take it all the time that could be a problem but I don’t expect that would be the case with it. If I’m sick enough to have to have an antibiotic, I’ll take it. I am 80 and that’s a “bit” over 60. :o)