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Medications
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Side Effects of Olopatadine Nasal SprayNosebleeds, headaches, and bitter taste are some of the most common side effects of olopatadine nasal spray. Less common but potentially serious side effects that require immediate medical attention include excessive drowsiness, severe or frequent nosebleeds, and allergic reactions. Other rare but possible olopatadine nasal spray side effects (occurring in less than 1 percent of people using the drug) include throat irritation, drowsiness, and fatigue.
Written by/reviewed by: Kristi Monson, PharmD; Arthur Schoenstadt, MD
Last reviewed by: Kristi Monson, PharmD;
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