Singulair® Tablets for Asthma and Allergies

This prescription medicine helps manage allergic rhinitis and prevents asthma-related symptoms. It works by blocking inflammatory signals in your airways and nasal passages. It is available for oral use and ships from Canada to US, with options that can fit many budgets without insurance.

What Singulair Is and How It Works

Singulair® contains montelukast, a leukotriene receptor antagonist. Leukotrienes are inflammatory chemicals that tighten airway muscles, cause swelling, and increase nasal congestion. By blocking the CysLT1 receptor, this medicine helps reduce airway inflammation, improves breathing control, and eases nasal symptoms. It is not a rescue therapy for sudden wheezing or acute bronchospasm.

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For oral film‑coated use, singulair tablets are typically taken once daily. In asthma, evening dosing is commonly recommended on the label. For allergic rhinitis, dosing time can be flexible, but consistency matters. For exercise-induced bronchoconstriction prevention, follow the official timing instructions on the label rather than adding extra doses.

Who It’s For

This treatment is indicated for the prophylaxis and chronic treatment of asthma and for relief of symptoms of seasonal and perennial allergic rhinitis. It can also help prevent exercise-induced bronchoconstriction in eligible patients. Use montelukast for asthma as part of a maintenance plan, not for acute attacks.

People with known hypersensitivity to any component should avoid this medicine. Those with a history of neuropsychiatric events may require closer monitoring and a careful risk–benefit discussion. It may be considered when intranasal corticosteroids or inhaled corticosteroids are not sufficient or suitable.

For more on related conditions, review our resources on Allergic Rhinitis, Asthma, and Exercise-Induced Asthma.

Dosage and Usage

Take this medicine exactly as prescribed. For chronic asthma control, the label recommends once-daily dosing, often in the evening. For allergic rhinitis, once-daily dosing is used, and timing can be adjusted to fit your routine. Do not use this medicine to treat a sudden asthma attack; keep a fast-acting inhaler available for acute symptoms if prescribed.

For exercise-induced bronchoconstriction prevention, a single dose before planned activity may be used per labeling. Do not take an extra dose within the same 24‑hour period. If you are already taking a daily dose for asthma or allergies, follow your clinician’s directions rather than adding another dose.

As a non-steroidal controller, montelukast for allergies can be used alone or with other therapies. Always review the Patient Information and Medication Guide for details, including boxed warnings and cautions.

Strengths and Forms

Availability may vary by pharmacy. Common presentations include film‑coated tablets for adults and older children, chewable tablets for pediatric use, and oral granules for younger patients.

• Film‑coated tablets: 10 mg
• Chewable tablets: 5 mg and 4 mg
• Oral granules: 4 mg

The generic name for montelukast is used on most prescriptions and packaging. If you have questions about which form is right for you, consult your prescriber.

Missed Dose and Timing

If you miss a dose, take the next scheduled dose at the usual time. Do not double up to make up for a missed dose. For exercise protection, do not repeat doses within the same day; follow the label timing for planned activity. Using a reminder app or calendar can help you stay consistent.

Storage and Travel Basics

Store tablets, chewables, and granules in the original packaging, away from moisture and excessive heat. Keep the container closed and out of reach of children and pets. Do not use if the packaging is damaged or past the expiration date.

When traveling, carry your medication in your hand luggage with the original labeled container and a copy of your prescription. Bring enough doses for the entire trip plus a small buffer. If you cross time zones, keep your once-daily schedule consistent by aligning dosing to your new local time.

Benefits

This therapy may help reduce daytime symptoms, nighttime awakenings, and activity limitations related to airway inflammation. It can also improve nasal congestion, rhinorrhea, and sneezing associated with seasonal or perennial rhinitis. The once-daily schedule may support adherence for long‑term control.

For nasal symptoms, singulair for allergies can be used when intranasal steroids are not tolerated or do not provide adequate relief. Some patients prefer a tablet option as part of a simplified regimen.

For nasal-focused care, your clinician might also consider an intranasal corticosteroid such as Nasonex Nasal Spray based on your symptom profile.

Side Effects and Safety

Common effects can include:

• Headache or dizziness
• Upper respiratory infection or sore throat
• Cough or nasal congestion
• Abdominal discomfort or diarrhea
• Tooth pain or ear discomfort
• Tiredness or fever

Serious but less common risks have been reported, including neuropsychiatric events such as agitation, sleep disturbances, anxiety, depression, and suicidal thoughts or actions. Hypersensitivity reactions, including rash and rare systemic eosinophilia, have also occurred. Seek medical attention for severe mood or behavior changes, rash, swelling, difficulty breathing, or other concerning symptoms.

If you use insulin or inhaled beta‑agonists for asthma control, monitor for symptom changes. This medicine is not a substitute for inhaled corticosteroids in persistent asthma unless your prescriber directs otherwise.

Drug Interactions and Cautions

Strong enzyme inducers such as rifampin or some anticonvulsants may reduce montelukast exposure. Certain inhibitors may increase levels. Always share a full list of your prescription drugs, over‑the‑counter medicines, and supplements with your prescriber.

Do not start, stop, or adjust asthma controllers or nasal medications without clinical guidance. If symptoms worsen or you need your rescue inhaler more often, contact your prescriber.

What to Expect Over Time

With regular use, many patients observe more stable breathing control and fewer nasal symptoms. Individual response varies. Keep using your maintenance plan as directed, even when you feel well, and review progress at follow‑up visits. Consider tracking symptoms, triggers, and rescue inhaler use to inform treatment decisions.

For emerging research on airway health, see our article on potential metabolic links in asthma: Reduce Asthma Attacks.

Compare With Alternatives

Controllers and symptom‑relief options vary by condition and severity:

Inhaled corticosteroid maintenance may be considered, such as Pulmicort Turbuhaler. For quick relief of acute bronchospasm, short‑acting beta‑agonists like Ventolin HFA Inhaler may be used when prescribed. Your regimen can be tailored by your clinician based on symptoms and risk profile.

Pricing and Access

We list current options so you can compare the singulair price with the generic equivalent. Many patients look for ways to pay less without insurance; Canadian pricing often helps reduce out‑of‑pocket spend. US shipping from Canada is available to qualifying addresses after prescription verification.

Savings tip: review pack sizes for better per‑unit value when appropriate. Pricing varies by strength, form, and manufacturer. For general respiratory options, visit the Respiratory category. For any current offers, see our Promotions page.

Availability and Substitutions

Stock may vary by form and manufacturer. If a selected item is unavailable, your prescriber may recommend a therapeutically appropriate alternative or approve a substitution. You can buy singulair online when you have a valid prescription and a suitable product is in stock.

Patient Suitability and Cost-Saving Tips

This medicine may suit patients needing once‑daily oral maintenance for asthma or rhinitis. It is not intended for immediate relief of acute breathing symptoms. People with a history of mood changes or sleep disturbances should discuss risks and monitoring before starting therapy.

To save, consider multi‑month refills where appropriate, and set refill reminders to avoid gaps in therapy. If you have questions about the montelukast generic name on your label or about equivalent products, contact our support team for clarification on available presentations.

Questions to Ask Your Clinician

• Is this treatment appropriate for my asthma severity and allergy profile?
• How should I time doses with my other controllers or rescue inhaler?
• What signs suggest I should report mood or sleep changes promptly?
• Which form suits me best: film‑coated tablet, chewable, or granules?
• How should I plan doses around exercise to prevent symptoms?
• When should I re‑evaluate my plan if symptoms change?

Authoritative Sources

For full prescribing information from the manufacturer, review the Product Monograph or US PI: Merck Singulair Prescribing Information. For official US labeling, see DailyMed: DailyMed Montelukast Sodium. For Canadian listings, consult Health Canada’s Drug Product Database: Health Canada Drug Product Database.

Order with secure checkout and prompt, express shipping with temperature-controlled handling when required. Medical disclaimer: This content is for informational purposes only and is not a substitute for professional medical advice.