About phenyleph rine
Nasal decongestant; alpha-adrenergic agonist
Used for
- Temporary relief of nasal congestion from colds, allergies, or sinus problems
Usual adult dose
For nasal drops, commonly 2–3 drops in each nostril every 4 hours as needed; follow the product label.
Usual dose in children
Children’s dosing depends on age and product directions; use only the labeled dose. Not for children under 2 years unless directed by a clinician.
Common side effects
- Nasal irritation, dryness, or sneezing
- Headache or dizziness
- Increased blood pressure or palpitations
- Rebound congestion with frequent or prolonged use
Important warnings
- Do not use longer than 3 days unless directed; congestion may worsen.
- Ask a clinician before use with high blood pressure, heart disease, thyroid disease, or diabetes.
- Keep away from eyes and do not swallow.
- Use cautiously with other decongestants or medicines that raise blood pressure.
Pregnancy
Safety is not well established; consult a healthcare professional before use.
Breastfeeding
Safety information is limited; consult a healthcare professional before use.
Interactions
- Monoamine oxidase inhibitors, including use within the past 14 days
- Other decongestants or stimulant medicines
- Some antidepressants and medicines that raise blood pressure
AI-generated from general medical knowledge, not from this product's official leaflet. It may be incomplete or out of date. Not medical advice — ask a pharmacist or doctor before making any decision.