Ingredient

Phenylephrine Hydrochloride

Phenylephrine hydrochloride is a vasoconstrictor used for the relief of nasal congestion.

See medicines used for Cold / Congestion / CoughSee medicines used for Respiratory & InfectionSee medicines used for Chronic Conditions
All medicines
65
Single ingredient
5
Combination
60
Prescription medication
5
OTC medication
60

MFDS ingredient code M222724

What does it do?

Phenylephrine hydrochloride belongs to the class of vasoconstrictors and is mainly used to relieve symptoms of nasal congestion. It is also included in some cold medications to reduce swelling of the nasal mucosa.

This ingredient constricts blood vessels to reduce swelling of the nasal mucosa and relieve nasal congestion. As the blood vessels narrow, blood flow to the mucosa decreases, making breathing easier.

Commonly used for

Approved uses differ by product. Check each product's information for its actual use.

Good to know

Compared to other vasoconstrictors, phenylephrine hydrochloride has less central nervous system stimulation and a relatively lower risk of cardiovascular side effects. Therefore, it can be safely used for the relief of nasal congestion.

Medicines containing this ingredient

Even with the same ingredient, strength, dosage form and how it is taken can differ.

Category
Dosage form
Strength
Category

65 total

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Even with the same ingredient, dosage and approved uses can differ by strength, dosage form and combined ingredients. Check each product's information before taking it.

Combined ingredients

Ingredients used together with this ingredient in combination products.

Questions about this ingredient

  • QI have slightly high blood pressure; can I take medication containing this ingredient?

    Phenylephrine hydrochloride is a component that constricts blood vessels, so it is difficult to say it is okay based solely on this explanation. Before taking any product containing this ingredient, please verify the product information, and if you are on any blood pressure medication, consult your pharmacist or doctor to see if it is safe to take together.

    Answers 1 · 2026.09.14

  • QIs it okay to take a decongestant and cold medicine together?

    Phenylephrine hydrochloride is present in some cold medications, so taking both a nasal congestion medication and a cold medicine may result in overlapping ingredients. Please compare the ingredient lists of the two products, and if you are confused about overlaps, confirm with your pharmacist before taking them.

    Answers 1 · 2026.09.14

  • QPhenylephrine is included in cold medicine; what role does it play?

    Phenylephrine hydrochloride is a component of the vasoconstrictor class, serving to relieve nasal congestion in cold medicines. It constricts the blood vessels in the nasal mucosa to reduce swelling and facilitate easier breathing.

    Answers 1 · 2026.09.14

For anything that needs medical judgment, consult a doctor or pharmacist.

SourceKorea Ministry of Food and Drug Safety (Drug Safety Korea)

This drug information is based on data provided by the Korea Ministry of Food and Drug Safety.
Consult a doctor or pharmacist for accurate dosage, administration, and usage instructions.