A nurse is reviewing the medical record of a client who has a new prescription for celecoxib to treat osteoarthritis. Which of the following should the nurse recognize as a contraindication for this medication?

A. Concurrent use of chondroitin: Chondroitin is commonly used to treat osteoarthritis and can generally be used safely alongside celecoxib. B. Concurrent use of calcium supplements: Calcium supplements do not have a contraindication with celecoxib and can be used concurrently. C. Penicillin allergy: A penicillin allergy does not affect the use of celecoxib, as it is unrelated to the penicillin class of antibiotics. D. Sulfonamide allergy: Celecoxib is a sulfonamide-based medication, so clients with a sulfonamide allergy should not take it due to the risk of an allergic reaction.