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## Oxymetazoline Nasal Spray ### Overview Oxymetazoline is a direct-acting sympathomimetic amine that acts as an alpha-adrenergic agonist. It causes vasoconstriction of the nasal mucosa, reducing swelling and congestion. ### Primary Indications * Nasal congestion associated with the common cold, allergic rhinitis, or sinusitis. ### Adult Dosing * **Nasal Spray:** 2 sprays in each nostril every 10-12 hours as needed. Do not exceed 2 doses in 24 hours. ### Pediatric Dosing * **Children 6 years and older:** 2 sprays in each nostril every 10-12 hours as needed. Do not exceed 2 doses in 24 hours. * **Children under 6 years:** Not recommended; consult a pediatrician. ### Dose Adjustments No dose adjustments are typically necessary for hepatic or renal impairment, but caution is advised in patients with cardiovascular disease. ### Contraindications * Hypersensitivity to oxymetazoline or any component of the formulation. * Patients using monoamine oxidase inhibitors (MAOIs) or within 14 days of discontinuing MAOIs. ### Adverse Effects Common: Nasal burning, stinging, dryness, sneezing, runny nose. Less Common/Serious: Rebound congestion (rhinitis medicamentosa) with prolonged use (>3 days), hypertension, cardiac arrhythmias, headache, insomnia, nervousness, nausea. ### Key Drug Interactions * **MAOIs and other sympathomimetics:** Risk of hypertensive crisis. Avoid concurrent use. ### Monitoring * Monitor for signs of rebound congestion or systemic absorption (e.g., increased blood pressure, heart rate). * Ensure the product is not used for longer than 3 consecutive days to minimize the risk of rhinitis medicamentosa. ### Clinical Pearls * Rhinitis medicamentosa (rebound congestion) can occur with prolonged or excessive use, leading to a cycle of dependency. Advise patients to limit use to 3 days. * Use cautiously in patients with cardiovascular disease (hypertension, coronary artery disease, hyperthyroidism) due to potential for systemic absorption and cardiovascular effects. *** *Disclaimer: This information is intended for clinical decision support and does not replace professional clinical judgment. Always refer to the most current prescribing information and consult with a healthcare professional for patient-specific guidance.*