Placebo is identifical in composition to rinovq but does not contain the substance medical clinical trials

Upadacitinib in adult patients with erosive mucosal Lichen Planus and Lichen Planopilaris: a prospective multicenter randomized placebo-controlled study. (Upa30-LP)

This study is looking into a new medication called upadacitinib (RINVOQ) for adults with certain types of lichen. It compares the medication to a dummy pill (placebo) to see if it helps improve the condition and how safe it is.