A nurse is caring for a client who is prescribed with for a gastrointestinal (GI) infection. The client has been taking the medication for two weeks and noted some redness and swelling at the Achilles tendon site. Based on the client's presenting Signs and symptoms. Which is the priority intervention for the nurse?

A. Correct: Fluoroquinolones (e.g., ciprofloxacin, levofloxacin) can cause tendonitis and tendon rupture, especially in the Achilles tendon. The medication should be stopped immediately, and the client should avoid weight-bearing activities. B. Incorrect: Increasing physical activity can worsen tendon damage and increase the risk of rupture. C. Incorrect: Increasing the dose would exacerbate the side effects. D. Incorrect: Fluoroquinolones must be taken as prescribed but should be discontinued if serious side effects occur.