PHENYLEPHRINE

Overview

Phenylephrine is a medicine often used to relieve a stuffy or blocked nose. It works by shrinking swollen blood vessels in your nasal passages, helping you breathe more easily. You might find it in many cold, flu, or allergy medications.
Classification
Decongestants
Uses
Relieves nasal congestion due to colds, allergies, or sinus infections

Sometimes used to increase low blood pressure during surgery or in critical care

May be found in eye drops to dilate pupils during eye exams
How It Works
Phenylephrine works by narrowing the blood vessels in the nose. This reduces swelling and opens up your airways. When taken for blood pressure support, it tightens blood vessels throughout the body, which helps raise blood pressure.
Dosage
As prescribed by your doctor.
Side effects
Some common or possible side effects may include:
Headache

Dizziness

Nervousness or restlessness

Trouble sleeping (insomnia)

Increased heart rate or blood pressure

In rare cases, serious side effects like irregular heartbeat or chest pain can occur. Always report unusual symptoms to your doctor.
Precautions
Avoid it if you have high blood pressure, heart disease, thyroid problems, or glaucoma, unless your doctor says it’s safe.

Do not use more than the recommended dose – overuse can increase side effects.

Tell your doctor if you’re pregnant or breastfeeding before using.

If taken with other medications (especially for depression or blood pressure), it could interact negatively.

Not recommended for young children without medical advice.
Disclaimer
This content is for informational purposes only. Always consult a healthcare provider for medical advice and proper dosage