A certain group of antibiotics, called fluoroquinolones, may increase the risk of tendonitis and ruptured tendons. Examples of antiobiotics in this group are Cipro (sold by generically as ciprofloxacin) and Floxin (sold generically as ofloxacin).
Cipro is most commonly used for urinary tract infections (UTIs).
The risk of tendon injury appears to begreater in patients who are 60 years or older, those who have had certain organ transplants and those who are taking steroid therapy. The FDA says that doctors should restrict use of the drug, only used if absolutely needed.
 
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