Some oral medicines travel from the digestive tract to the liver before reaching the wider bloodstream. During this first pass, liver enzymes—and sometimes the intestinal wall—can transform part of the drug.
The effect varies by medicine. Drug metabolism may reduce the amount of active drug reaching circulation, while some substances can form active metabolites.
Explore this fascinating process through cinematic 3D medical CGI from Body Spectra.
Educational content only. Always follow the instructions provided with your medication and consult a qualified healthcare professional with medication questions.