Sinex%2525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252520%2525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252528oxymetazoline%2525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252529

## Sinex (Oxymetazoline) ### Overview Oxymetazoline is a topical decongestant that acts as an alpha-adrenergic agonist, causing vasoconstriction of nasal mucosal blood vessels, thereby reducing swelling and congestion. ### Primary Indications * Nasal congestion due to the common cold, hay fever, or other upper respiratory allergies. ### Adult Dosing * **Nasal Spray:** 2 sprays in each nostril every 10-12 hours as needed. Do not exceed 2 doses in a 24-hour period. ### Pediatric Dosing * **Children 6-11 years:** 1-2 sprays in each nostril every 10-12 hours as needed. Do not exceed 2 doses in a 24-hour period. * **Children under 6 years:** Not recommended. Consult a pediatrician. ### Dose Adjustments * No specific dose adjustments are typically needed for hepatic or renal impairment, as systemic absorption is minimal with topical use. ### Contraindications * Hypersensitivity to oxymetazoline or any component of the formulation. * Patients currently taking or who have taken MAO inhibitors within the past 14 days (risk of hypertensive crisis). ### Adverse Effects * **Common:** Nasal burning, stinging, sneezing, dry nose. * **Less Common/Serious:** Rebound congestion (rhinitis medicamentosa) with prolonged or excessive use, headache, nervousness, insomnia, palpitations. ### Key Drug Interactions * **MAO Inhibitors:** Concurrent use or use within 14 days of MAO inhibitors can lead to severe hypertension. * **Tricyclic Antidepressants (TCAs):** May potentiate the pressor effects of oxymetazoline. ### Monitoring * Monitor for signs of rebound congestion (worsening nasal congestion after initial relief). * Assess for cardiovascular effects (e.g., elevated blood pressure, palpitations) with excessive use or in sensitive individuals. ### Clinical Pearls * Limit use to a maximum of 3 consecutive days to minimize the risk of rebound congestion. * If congestion persists beyond 3 days, patients should be advised to discontinue use and consult a healthcare provider. * Proper technique is important: tilt head slightly forward, insert nozzle into nostril, and spray while inhaling gently. *** *This information is intended for clinical use and does not replace the most current prescribing information. Always verify with the official drug monograph.*