Role of
Antihistamines

IMPORTANT SAFETY INFORMATION

• You should not receive QUZYTTIR if you are allergic to any of its ingredients or if you are allergic to other medicines that contain levocetirizine or hydroxyzine.
• QUZYTTIR may cause sleepiness. Be careful when driving a car or operating potentially dangerous machinery. Avoid alcohol or taking certain other medicines with QUZYTTIR, as this may raise your risk of having problems with alertness or thinking. Tell the healthcare provider treating you about all the medicines you are taking, including prescription or over-the-counter medicines, vitamins, or herbal supplements.
• QUZYTTIR was not studied in pregnant or nursing women. Tell your healthcare provider if you are pregnant, plan to become pregnant, or are breastfeeding.
• The most common side effects (which occurred in <1% of patients) are: a change in sense of taste, headache, a tingling sensation, feeling faint, indigestion, feeling hot, and excessive sweating.
• The most common side effects observed in studies of an oral form of the active ingredient in QUZYTTIR taken by adults for a prolonged amount of time were sleepiness, tiredness, dry mouth, sore throat, and dizziness. In similar studies with children, the most common side effects were headache, sore throat, abdominal pain, sleepiness, diarrhea, nosebleed, bronchial spasm, nausea, and vomiting.
• Call your healthcare provider about any side effects that you may experience.