Antacids and supplements containing magnesium, aluminum, calcium, iron, or zinc can bind ciprofloxacin and reduce absorption; ciprofloxacin is generally taken at least 2 hours before or 6 hours after these products. It should not be taken with dairy products alone. New tendon pain, swelling, or inflammation requires stopping exercise, withholding further doses, and prompt clinical guidance because fluoroquinolones can cause tendon injury.
In-depth explanation
Clinical reasoning
Multivalent cations chelate ciprofloxacin and lower gastrointestinal absorption. Fluoroquinolone-associated tendon injury can occur before rupture and is not a symptom to exercise through.
Decision rule
Separate ciprofloxacin from cation-containing products, avoid taking it with dairy alone, maintain hydration, and promptly report tendon symptoms.
For study reference only. Always follow current clinical guidelines and your institution’s protocols.