Plain-English translation of NCT03476577 on ClinicalTrials.gov ↗ · Source last updated · Translation generated · How we translate trials
Researchers want to understand how weight loss surgery affects the way your body processes common medications. This study focuses on , a pain reliever many people use. When you have gastric bypass or sleeve gastrectomy surgery, your digestive system changes significantly, and those changes may affect how medications work in your body.
Very little is known about how these two types of weight loss surgery change the way your body absorbs and uses medications. Understanding this could help doctors prescribe the right doses of pain relievers and other drugs for patients after surgery.
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Researchers will take blood samples before your surgery and after your surgery to measure how your body processes . These samples will help them understand how the surgery changes the way medications work in your system. The study involves a small number of participants and is being conducted at a university hospital in Norway.
AI-generated summary from trial data · Jul 12, 2026 · Not medical advice
Norway
St. Olavs Hospital, Volvat Medisinsk Senter Stokkan
Enrollment target
~12 participants
Started
November 2016
Primary completion
October 2026
Age range
18 Years – 70 Years
Last updated on clinicaltrials.gov in July 2026.
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Central contact
Magnus Strømmen, MSc
St. Olavs Hospital
Tell us you're interested and we'll help connect you with the research team. We'll walk you through what to expect first — no email needed to get started.