Plasmaeksponeringen af omeprazol (CYP 2C19 substrat) 40 mg 1 gang dagligt blev øget med 46% efter administration af valdecoxib 40 mg 2 gange dagligt i 7 dage, mens plasmaeksponeringen af valdecoxib var upåvirket.
Plasma exposure of omeprazole (CYP 2C19 substrate) 40 mg once daily was increased by 46% following administration of valdecoxib 40 mg twice daily for 7 days, while the plasma exposure to valdecoxib was unaffected.