Antibiotics Can Cause Workout Injuries, FDA Warns

Your sickness might sideline your workout in a surprising way: Taking a certain class of antibiotics called fluoroquinolones can raise your risk for harmful side effects like tendonitis or even a full-blown tendon rupture, according to a new update from the Federal Drug Administration (FDA).

In fact, people who take these meds—such as Cipro or Levaquin—have about triple the risk of tendon rupture as those not on the drug, researchers from the University of Toronto found.