Haleon Flu Relief (Phenylephrine Hydrochloride, Ascorbic Acid, Paracetamol)

Haleon Flu Relief is indicated for the temporary relief of several symptoms that commonly accompany upper‑respiratory infections.

• Nasal congestion caused by colds or flu.
• Fever associated with viral infections.
• Headache and mild to moderate body aches.
• Sore throat discomfort.
• Vitamin C supplementation to support normal immune function.

Possible adverse effects of Haleon Flu Relief are generally mild, but some reactions may require medical attention.

Common

• Mild nausea or stomach upset.
• Transient dizziness or light‑headedness.
• Temporary increase in blood pressure.
• Mild headache unrelated to the underlying illness.

Serious

• Allergic skin reaction such as rash or itching.
• Severe hypertension or rapid heart rate.
• Liver enzyme elevation with prolonged use.
• Signs of anaphylaxis (difficulty breathing, swelling).

Before using Haleon Flu Relief, consider the following precautions to ensure safe and appropriate use.

• Do not exceed the recommended daily amount of paracetamol from any source.
• Avoid use if you have uncontrolled high blood pressure or severe heart disease.
• Consult a healthcare professional before use during pregnancy, breastfeeding, or in children.
• Discontinue if you develop an allergic reaction or worsening symptoms.
• Use caution when taking other decongestants or stimulant medications.
• Keep out of reach of children.

Haleon Flu Relief may interact with certain medicines; awareness of these interactions helps prevent adverse outcomes.

Avoid

• Monoamine oxidase inhibitors (MAOIs) or recent use within 14 days.
• Other products containing phenylephrine, paracetamol, or high‑dose vitamin C.
• Certain antihypertensive agents (e.g., β‑blockers) that may have reduced efficacy.

Use with caution

• Anticoagulants or antiplatelet drugs, as paracetamol can affect bleeding risk.
• Alcohol, which may increase liver strain from paracetamol.
• Certain antidepressants (e.g., SSRIs) that can raise blood pressure when combined with phenylephrine.