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# Oxymetazoline Nasal Spray
## Overview
Oxymetazoline is a topical alpha-adrenergic agonist that causes vasoconstriction of nasal vasculature, reducing nasal congestion.
## Primary Indications
* Nasal congestion due to the common cold, hay fever, or other upper respiratory allergies.
## Adult Dosing
* **Sinex:** 2 sprays in each nostril every 10-12 hours as needed.
* **Maximum duration:** Do not use for more than 3 consecutive days.
## Pediatric Dosing
* **Children 6 to under 12 years:** 1 to 2 sprays in each nostril every 10-12 hours as needed.
* **Children under 6 years:** Consult a pediatrician. Data is limited.
## Dose Adjustments
No dose adjustments are typically required based on renal or hepatic impairment, as systemic absorption is minimal.
## Contraindications
* Hypersensitivity to oxymetazoline or any component of the formulation.
* Patients currently taking or within 14 days of stopping a monoamine oxidase inhibitor (MAOI).
## Adverse Effects
* **Common:** Nasal discomfort, burning, stinging, sneezing, increased nasal discharge.
* **Less Common:** Rebound congestion (rhinitis medicamentosa) with prolonged use, headache, nervousness, dizziness, insomnia.
* **Rare:** Increased blood pressure, palpitations, allergic reactions.
## Key Drug Interactions
* **MAO Inhibitors (including isocarboxazid, linezolid, methylene blue, phenelzine, tranylcypromine):** Concomitant use can lead to hypertensive crisis. Avoid use within 14 days of MAOI discontinuation or initiation.
* **Other sympathomimetic agents:** May potentiate systemic pressor effects. Use with caution.
## Monitoring
* Monitor for signs of rebound congestion, especially with prolonged use (>3 days).
* Monitor blood pressure in patients with cardiovascular disease.
## Clinical Pearls
* Prolonged or excessive use can lead to rhinitis medicamentosa, characterized by worsening congestion and dependence on the spray.
* Advise patients to limit use to the shortest duration necessary, not exceeding 3 days.
* If symptoms persist, patients should discontinue oxymetazoline and consult a healthcare provider.
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*This information is intended for clinical decision-making and does not replace the need to consult official prescribing information or local protocols. Always verify current drug information before making prescribing decisions.*
