lifitegrast 50 MG/ML Ophthalmic Solution [Xiidra]

INDICATIONS AND USAGE Xiidra ® (lifitegrast ophthalmic solution) 5% is indicated for the treatment of the signs and symptoms of dry eye disease (DED). Xiidra (lifitegrast ophthalmic solution) 5% is a lymphocyte function-associated antigen-1 (LFA-1) antagonist indicated for the treatment of the signs and symptoms of dry eye disease (DED). ( 1 )

DOSAGE AND ADMINISTRATION Instill one drop of lifitegrast ophthalmic solution twice daily (approximately 12 hours apart) into each eye using a single-dose container. Discard the single-dose container immediately after using in each eye. Contact lenses should be removed prior to the administration of lifitegrast ophthalmic solution and may be reinserted 15 minutes following administration. One drop twice daily in each eye (approximately 12 hours apart).

CONTRAINDICATIONS Xiidra is contraindicated in patients with known hypersensitivity to lifitegrast or to any of the other ingredients in the formulation [see Adverse Reactions (6.2) ]. Hypersensitivity. ( 4 )

Mechanism of Action Lifitegrast binds to the integrin LFA-1, a cell surface protein found on leukocytes and blocks the interaction of LFA-1 with its cognate ligand intercellular adhesion molecule‑1 (ICAM-1). ICAM-1 may be overexpressed in corneal and conjunctival tissues in DED. LFA-1/ICAM-1 interaction can contribute to the formation of an immunological synapse resulting in T‑cell activation and migration to target tissues. In vitro studies demonstrated that lifitegrast may inhibit T-cell adhesion to ICAM-1 in a human T-cell line and may inhibit secretion of inflammatory cytokines in human peripheral blood mononuclear cells. The exact mechanism of action of lifitegrast in DED is not known.