Common adverse reactions (approximately 10–30% of patients) include dry mouth, ocular redness, burning or stinging sensation, headache, blurred vision, foreign body sensation, fatigue or drowsiness, conjunctival follicle formation, allergic eye reactions, and itching. Less common reactions (approximately 3–9%) include corneal staining or erosion, sensitivity to light (photophobia), eyelid redness, eye pain, dryness, tearing, upper respiratory symptoms, eyelid swelling, conjunctival edema, dizziness, blepharitis, ocular irritation, gastrointestinal disturbances, weakness, conjunctival blanching, abnormal vision, and muscle pain. Rare reactions (less than 3%) include eyelid crusting, conjunctival hemorrhage, altered taste, insomnia, conjunctival discharge, depression, hypertension, anxiety, palpitations or arrhythmias, nasal dryness, and syncope.