Der er yderligere øget risiko for gastrointestinale bivirkninger (gastrointestinale ulcera eller andre gastrointestinale komplikationer), hvis celecoxib tages samtidig med acetylsalicylsyre (selv ved lave doser).
There is further increase in the risk of gastrointestinal adverse effects for celecoxib (gastrointestinal ulceration or other gastrointestinal complications), when celecoxib is taken concomitantly with acetylsalicylic acid (even at low doses).