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Phenylephrine is used to relieve nasal congestion, which is a stuffy nose, due to colds, allergies, or sinusitis. It helps by reducing swelling in the nasal passages. It's also used to increase blood pressure in certain medical situations.
Phenylephrine works by narrowing blood vessels in the nasal passages, which reduces swelling and congestion. This action helps you breathe more easily by decreasing the blood flow to the nasal tissues.
Phenylephrine is usually taken by mouth as a tablet or liquid. Adults typically take 10 mg every 4 hours as needed, not exceeding 60 mg in 24 hours. Always follow your doctor's instructions or the package label.
Common side effects of phenylephrine include increased blood pressure, nervousness, dizziness, and trouble sleeping. These effects are usually mild and temporary. If you experience severe symptoms, consult your doctor.
Phenylephrine can raise blood pressure, so use it cautiously if you have high blood pressure or heart disease. It's not suitable for people with severe high blood pressure, heart disease, or certain thyroid disorders. Always consult your doctor before use.