Barigen 4 mg includes baricitinib, which is a selective and reversible inhibitor of the Janus kinase (JAK). It works specifically with JAK1 and JAK2 to suppress the inflammatory signal transmission inside cells. Through inhibiting the JAK1 and JAK2, baricitinib suppresses the signaling of JAK-STAT pathway. Barigen 4 mg should only be taken under medical prescription. The choice of therapy and dose will be based on the individual health state and safety considerations.