<p>Celecoxib is contraindicated in patients with known hypersensitivity to Celecoxib. It should not be given to patients who have demonstrated allergic type reactions to Sulphonamides (Celecoxib contains a sulphonamide side chain). Celecoxib should not be given to patients who have demonstrated asthma, urticaria or allergic type reactions after taking Aspirin or other NSAIDs. Severe, rarely fatal, anaphylactic like reactions to NSAIDs have been reported in such patients.</p>