General Information

Benylin Ireland (generic name: Dextromethorphan) is a cough suppressant, which works by affecting the signals coming out of the brain that trigger the cough reflex, and relieving cold and flu symptoms. That includes general aches and pains, easing headaches and sore throats, reducing fevers, unblocking airways and helping with drowsiness and fatigue. Benylin does not treat a cough caused by asthma, smoking or emphysema. The paracetamol assists to bring down fever and further reduce the pain and headaches, while phenylephrine, a decongestant, assists to reduce swelling in the nose passages, so that patient can breathe easily.

Always ask a doctor prior to giving a cough and/or cold medicine to a child. Death cases have been reported from misuse of cough and cold medications in very young children.


Do not take Benylin Ireland if you were using any MAO inhibitor during the past 14 days. Consult with your doctor or pharmacist regarding Benylin Ireland if you suffer from chronic bronchitis or emphysema. It is not confirmed whether Benylin Ireland can harm an unborn baby. Hence, it is advised to abstain from using this medicine without doctor’s advice in case if you are pregnant or planning to become pregnant soon.

Benylin Ireland can pass into the breast milk and can harm a nursing baby. Hereby, it is highly advised not to use this medication without your doctor’s permission if you are breastfeeding a child. There may be Phenylalanine contained in the artificially sweetened liquid medicine. So, make sure you check the medication label if you suffer from Phenylketonuria (PKU).


Take Benylin Ireland in exact accordance with directions provided on the label, or as per prescription of your doctor. Do not take the medicine in larger amounts and do not use it for longer periods than recommendation specifies. Cough medicine is generally taken for a short period of time only until your symptoms are clear. Do not give Benylin Ireland to children younger than 4 years old. Always seek for doctor’s advice prior to giving a cough or cold medication to any child regardless of the age.

Measure liquid medicine with help of the dosing syringe provided in the package, or with help of medicine cup or a special dose-measuring spoon. If you happen not to have a dose-measuring device, check with your pharmacist for one. Take the medicine with extra fluids to assist to loosen the congestion as well as lubricate your throat during the intake of this medicine. Discuss with your doctor if your symptoms remain the same after 7 days of treatment, or else if you have a headache with fever, skin rash or cough. In case, if you are required to undergo any type of surgery, inform your surgeon ahead of time, if for the past few days you have taken a cough medicine. Store Benylin Ireland at room temperature conditions, away from light, heat and moisture.

Normal adult dose for cough treatment is:

  • Immediate-release: 10 – 20 mg orally every 4 hours, or 30 mg orally every 6 – 8 hours;
  • Extended-release: 60 mg to be taken orally every 12 hours;
  • Maximum dose: 120 mg every 24 hours.
  • Use: for temporary relief of cough caused by minor throat and/or bronchial irritation, which may occur due to inhaled irritants or common cold.

Normal paediatric dose for cough treatment is:

  • Under 4 years: not recommended
  • 4 to 6 years old:
    • Immediate-release: 2.5 – 5 mg taken orally every 4 hours or 7.5 mg taken orally every 6 – 8 hours;
    • Extended-release: 15 mg taken orally every 12 hours;
    • Maximum dose: 30 mg every 24 hours.
  • 6 to 12 years:
    • Immediate-release: 5 – 10 mg taken orally every 4 hours or 15 mg taken orally every 6 – 8 hours;
    • Extended-release: 30 mg every 12 hours;
    • Maximum dose: 60 mg every 24 hours.
  • 12 years or older:
    • Immediate-release: 10 – 20 mg taken orally every 4 hours or 30 mg taken orally every 6 – 8 hours;
    • Extended-release: 60 mg taken orally every 12 hours;
    • Maximum dose: 120 mg every 24 hours.

Side Effects

Seek for an immediate emergency medical help once you experience any signs of an allergic reaction:

  • hives;
  • difficulties with breathing;
  • swelling of face, tongue, throat or lips.
  • Stomach upset may also be among common side effects.

Stop taking Benylin Ireland and contact your doctor immediately if you experience:

  • Hallucinations, confusion;
  • Severe anxiety, dizziness, restlessness or nervousness;
  • Shallow or slow breathing.

Refer to symptoms of overdose listed below, take them seriously and seek for an immediate medical assistance, if any of the symptoms occur:

  • Overall confusion;
  • Blurred vision;
  • Difficulty in urination;
  • Nausea or severe vomiting;
  • Drowsiness and/or dizziness;
  • Unsteady walking and shakiness;
  • Slowed breathing;
  • Abnormal nervousness, excitement, restlessness or severe irritability.