LITFULO (ritlecitinib) FAQ Click to download the LITFULO FAQ What is LITFULO? LITFULO (Ritlecitnib) is a selective dual Janus kinase 3 (JAK3) and tyrosine protein (TEC) kinase inhibitor approved by the U.S. Food and Drug Administration (FDA) for adults and adolescents 12 years and older with severe alopecia areata (AA) (1).
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