Speaking of Fluoroquinolones and Cipro (Ciprofloxacin) specifically, I personally had bad experiences with it causing tendon damage and severe back pain, though

Speaking of Fluoroquinolones and Cipro (Ciprofloxacin) specifically, I personally had bad experiences with it causing tendon damage and severe back pain, though fortunately the damage healed and the back pain cleared within a couple days after stopping my Cipro course early and switching to a different antibiotic.