How do you take Montelukast (Montelukast Sodium); Levocetirizine Dihydrochloride?

Adults typically take one tablet (Montelukast 10 mg + Levocetirizine 5 mg) once daily in the evening. You can take it with or without food, but taking it at the same time every day works best. Swallow the tablet whole with water.

What are the side effects of Montelukast (Montelukast Sodium); Levocetirizine Dihydrochloride?

Feeling sleepy or drowsy, headache, dry mouth, stomach pain, feeling tired or weak

Who should not take Montelukast (Montelukast Sodium); Levocetirizine Dihydrochloride?

People who are allergic to Montelukast, Levocetirizine, or Cetirizine should not take this drug. People with severe kidney problems should avoid it. It is not suitable for children under 2 years without a doctor's guidance. People with phenylketonuria (PKU) should check with their pharmacist as some formulations may contain phenylalanine.

Prescription

Antiallergy (Leukotriene receptor antagonist + Antihistamine)

Montelukast; Levocetirizine Dihydrochloride

Q: What is Montelukast (Montelukast Sodium); Levocetirizine Dihydrochloride used for?

Allergic rhinitis (sneezing, runny nose, itchy or watery eyes caused by allergies), hay fever, asthma triggered by allergies, skin rashes and itching from allergies, dust or weather-related allergies

Last reviewed June 2026

Who is this for?

What is this drug?

This is a combination drug containing Montelukast (which blocks chemicals that cause swelling and tightening in your airways) and Levocetirizine (an antihistamine that blocks the chemical your body releases during allergic reactions). Together, they work to relieve allergy symptoms and help you breathe more easily.

What is it used for?

Allergic rhinitis (sneezingrunny noseitchy or watery eyes caused by allergies)hay feverasthma triggered by allergiesskin rashes and itching from allergiesdust or weather-related allergies

Browse by condition

Allergies Asthma & Breathing Cough & Cold Eczema & Skin Rashes Sinus & Nasal

How it works

Blocks cysteinyl leukotriene receptors (CysLT1) to inhibit bronchoconstriction and inflammatory cell recruitment, while simultaneously antagonizing H1 histamine receptors to suppress histamine-mediated vasodilation, pruritus, and allergic symptoms.

Prescription Required

You need a doctor's prescription to buy this drug.

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What to watch out for

Buy only from licensed pharmacies — do not purchase from roadside vendors or unregistered sellers, as fake versions of this drug exist in Nigeria. Watch out for mood changes or unusual behavior especially in children and teenagers — report to your doctor immediately. This drug may make you drowsy, so avoid driving okada, keke, or operating heavy machinery until you know how it affects you.

Common Side Effects

Feeling sleepy or drowsy
headache
dry mouth
stomach pain
feeling tired or weak

Serious Side Effects

Mood changes
unusual thoughts
depression
or feeling agitated — stop the drug and see a doctor immediately. Severe allergic reaction with swelling of the face
lips
or throat and difficulty breathing — go to the hospital right away. Unusual bleeding or bruising requires urgent medical attention.

Drug Interactions

Avoid drinking alcohol while taking this drug as it can make you very drowsy and dizzy. If you are taking phenobarbital or rifampicin (commonly used for TB treatment in Nigeria), tell your doctor as they can reduce how well Montelukast works. Inform your doctor if you are taking any sleeping pills or other allergy medications to avoid doubling up on drowsiness.

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Pregnancy & Breastfeeding Warning

This combination is not recommended during pregnancy or breastfeeding unless your doctor says the benefit outweighs the risk — always consult your doctor before using it if you are pregnant, planning to become pregnant, or breastfeeding.

Who Should NOT Take This

People who are allergic to Montelukast
Levocetirizine
or Cetirizine should not take this drug. People with severe kidney problems should avoid it. It is not suitable for children under 2 years without a doctor's guidance. People with phenylketonuria (PKU) should check with their pharmacist as some formulations may contain phenylalanine.

How to Store

Store in a cool, dry place away from direct sunlight and heat — Nigerian weather can be very hot, so do not leave it in your car or near a window. Keep the tablets in their original pack and away from moisture. Always keep out of reach of children.

For information only — not medical advice. Always talk to a doctor or pharmacist before changing your medication.