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Topical Alpha-Adrenergic Agonist (Nasal Decongestant)

Oxymetazoline (Nasal Decongestant)

Brand names: Sudafed Nasal Spray, Afrin

Oxymetazoline is a topical nasal decongestant applied as drops or spray for short-term relief of nasal congestion in colds, sinusitis and allergic rhinitis.

Dosing — being independently re-sourced

ClinCalc Pro is rebuilding its dose data from primary open sources — the manufacturer SmPC (eMC), the WHO Model Formulary and other official references — under clinician review. This drug's structured dose is not yet published here. Confirm all doses against the product SmPC and your local formulary before prescribing.

Clinical monograph

How it works

It is a sympathomimetic alpha-adrenoceptor agonist that constricts the nasal blood vessels, reducing mucosal swelling and improving nasal airflow.

Prescribing in practice

  • It should only be used for a short course because prolonged use causes rebound nasal congestion (rhinitis medicamentosa).
  • Local effects such as nasal dryness, stinging or sneezing may occur.
  • Caution is advised in patients with cardiovascular disease, hyperthyroidism or those taking interacting sympathomimetic medicines.

Monitoring

No laboratory monitoring is required; review if congestion persists or worsens after the recommended short course.

Counselling the patient

  • Use this spray only for a few days to avoid worsening rebound congestion.
  • Do not exceed the recommended frequency of use.
  • Seek advice if your symptoms continue beyond the short recommended period.

Evidence & guidelines

Short-term use reflects standard guidance to avoid rebound congestion; refer to current prescribing references.

Reference: MHRA OTC Decongestant Safety; EMA Paediatric Decongestant Review; Drug verified in RxNorm (NLM); confirm dosing against the manufacturer SPC (eMC). Verify against your local formulary and current prescribing references before prescribing. Monograph status: clinician-reviewed (2026-07-04).

Related

Curated clinical cross-links plus same-class fallbacks.

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