Skyrizi and Tremfya are both IL-23 p19-selective biologics for moderate-to-severe Crohn's disease, made by competing manufacturers (AbbVie and Johnson & Johnson). Both drugs belong to the same mechanism class and target the same cytokine subunit, so the skyrizi vs tremfya crohn's comparison often comes down to trial data, administration options, and maintenance convenience. This guide walks through the key differences to help you discuss the decision with your GI.