Commonly used Janus kinase (JAK) inhibitors: Tofacitinib (Xeljanz) for the treatment of rheumatoid arthritis and psoriatic arthritis. Baricitinib (Olumiant) for the treatment of rheumatoid arthritis and severe atopic dermatitis. Upadacitinib (Rinvoq) for the treatment of rheumatoid arthritis. Filgotinib (Jyseleca) for the treatment of rheumatoid arthritis and severe ulcerative colitis. Peficitinib for the treatment of rheumatoid arthritis in Japan and South Korea…. Read More »