Montelukast – What It Is and How It Works

Montelukast is a pill that blocks leukotrienes, chemicals your body releases during an allergic reaction or asthma attack. By stopping these chemicals, the drug helps keep airways open and reduces symptoms like wheezing, coughing, and shortness of breath. It’s sold under the brand name Singulair, but you’ll also see it listed as generic Montelukast.

Doctors often prescribe Montelukast for people with asthma, especially those whose symptoms flare at night or after exercise. It’s also approved for allergic rhinitis – the runny‑nose, sneezing, and itchy eyes you get from pollen or dust. Because it works differently from inhalers, it can be a useful add‑on when inhalers alone aren’t enough.

When to Use Montelukast

If you’ve been told you have asthma or allergic rhinitis, your doctor might suggest Montelukast as a daily tablet. The usual dose for adults and kids 12 years and older is one 10 mg tablet taken at the same time each day, often in the evening. Younger children get smaller doses: 5 mg for ages 6‑11 and 4 mg chewable tablets for ages 2‑5.

Take the tablet with or without food – just make sure you remember the same time each day. Consistency helps keep leukotriene levels steady, which means fewer surprise attacks. If you miss a dose, take it as soon as you remember unless it’s almost time for your next dose; then just skip the missed one and keep your routine.

Montelukast isn’t a rescue inhaler. If you’re having an acute asthma attack, you still need a fast‑acting bronchodilator like albuterol. Montelukast works in the background to lower the overall frequency and severity of attacks.

Potential Side Effects and Interactions

Most people tolerate Montelukast well, but a few side effects can show up. The most common are headache, stomach upset, and a mild cough. Some users report feeling tired or having a sore throat.

A rarer but serious concern is changes in mood or behavior. A small number of patients have experienced anxiety, depression, or even suicidal thoughts while on the drug. If you notice mood swings, talk to your doctor right away.

Montelukast can interact with certain medicines. For example, it may affect the way your liver processes drugs like phenobarbital or rifampin, potentially lowering Montelukast’s effectiveness. Always list every prescription, over‑the‑counter, and herbal product you take when you start this medication.

Pregnant or breastfeeding moms should discuss risks with their healthcare provider. Current guidelines say the drug is generally safe, but the decision should be individualized.

To keep side effects low, follow the prescribed dose and report any new symptoms promptly. Don’t double‑dose if you forget a pill; instead, get back to your regular schedule as soon as possible.

Montelukast can be a solid part of an asthma or allergy plan, especially for people who need extra control at night or after exercise. Combine it with inhalers, allergy avoidance, and a healthy lifestyle for the best results.

Remember, the medication works over weeks, not hours. Give it a few weeks before judging its full effect, but stay alert for any unusual reactions. When used correctly, Montelukast can help you breathe easier and sleep better.