คำอธิบาย
Semaglutide slows gastric emptying, potentially reducing and delaying oral warfarin absorption, leading to variable changes in INR that complicate anticoagulation management.
กลไก
GLP-1 receptor agonists reduce gastric emptying rate by up to 35%; slower absorption of warfarin can reduce peak plasma concentrations and shift the time-to-peak, altering the pharmacokinetic profile without necessarily changing total AUC predictably.
ความสำคัญทางคลินิก
Clinical pharmacokinetic studies with semaglutide demonstrated modest changes in warfarin Cmax; however, INR fluctuation has been reported and warfarin has a narrow therapeutic index.
การจัดการ
Monitor INR more frequently when initiating, dose-escalating, or discontinuing semaglutide; adjust warfarin dose based on INR response; educate patient on consistent dietary vitamin K intake.
ข้อจำกัดความรับผิดชอบทางการแพทย์
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