I thought antibiotics were beneficial in fighting infection, but it looks like some antibiotics may be causing some harm as well. The FDA is forcing companies to put a black box warning on certain antibiotics because they've been found to lead to tendinitis and ruptured tendons. Yikes! Flouroquinolone drugs, the potent class of antibiotics which include Cipro, Levaquin, Avelox, Proquin, Noroxin, Floxin, and other medications are the drugs in question.
The FDA says that if you are currently taking any of these antibiotics and are suffering from tendon pain or inflammation, you should stop usage and contact your doctor. You want to be able to fight infections, but keep your tendons intact, too.