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Singulair (Montelukast Sodium)

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Singulair (Montelukast Sodium)

Singulair (Montelukast Sodium) is a prescription medication used to help control and prevent asthma symptoms, seasonal allergies, and exercise-induced bronchoconstriction. It works by blocking substances in the body called leukotrienes, which cause swelling and tightening of the airways.

Why Choose Singulair (Montelukast Sodium)?

  • Helps prevent asthma attacks by reducing airway inflammation.
  • Controls symptoms of allergic rhinitis (sneezing, runny nose, and nasal congestion).
  • Eases breathing during exercise, preventing exercise-induced bronchoconstriction.
  • Convenient once-daily oral tablet.
  • Suitable for long-term use in both adults and children.

How to Use Singulair (Montelukast Sodium)?

  • Take Singulair exactly as prescribed by your healthcare provider.
  • Do not use Singulair to treat sudden asthma attacks—always have a rescue inhaler available for emergencies.
  • Take it once daily, in the evening for asthma, or as directed for allergies.
  • Can be taken with or without food.
  • Continue using it even when you feel well to maintain asthma/allergy control.
  • Store the medication at room temperature, away from moisture and heat.

Important Safety Information about Singulair

  • Allergies: Avoid Singulair if you are allergic to Montelukast or any of its ingredients.
  • Mental Health: Rare side effects include mood changes, anxiety, depression, or suicidal thoughts. Contact your doctor immediately if these occur.
  • Not for Rescue: Singulair is not a rescue medication and should not be used for sudden asthma attacks.
  • Drug Interactions: Discuss with your doctor if you are on other medications, especially phenobarbital or rifampin, as they can affect Singulair's effectiveness.

Fact Table

 
Facts Details
Brand Name Singulair
Generic Name Montelukast Sodium
Drug Class Leukotriene Receptor Antagonist (Anti-inflammatory)
Formulation Oral tablets, chewable tablets, oral granules
Prescription Required Yes
Indications Asthma, allergic rhinitis (seasonal allergies), exercise-induced bronchospasm
Primary Mechanism of Action Blocks leukotrienes to reduce inflammation and prevent bronchoconstriction
Dosage 1 tablet daily (typically in the evening for asthma control)
Usage Long-term control of asthma symptoms and allergies, not for acute symptoms
Suitable Age Groups Adults and children (2 years and older)
Administration Oral, with or without food
Time to Effect Effects are typically noticeable after a few days of consistent use
Duration of Treatment Long-term as prescribed by the healthcare provider
Storage Store at room temperature (20-25°C), away from moisture and heat
Common Side Effects Headache, stomach pain, tiredness, cough, sore throat, mild rash
Drug Interactions Phenobarbital, rifampin, and other drugs affecting liver enzymes
FDA Approval Yes (approved by the FDA)

Common Side Effects

Like all medications, Singulair (Montelukast Sodium) can cause side effects, although not everybody gets them. Understanding these side effects can help you use this medication safely and effectively.
  • Headache
  • Stomach pain or indigestion
  • Tiredness or drowsiness
  • Cough or sore throat
  • Mild rash or itching
If you experience any side effects, discuss them with your healthcare provider. They can offer advice and may adjust your treatment if necessary. Report any severe or unexpected side effects immediately.

How Can You Buy Singulair (Montelukast Sodium)?

You can order Singulair (Montelukast Sodium) using these methods on our website:
  1. Order Online
  2. Order by Phone
  3. Order by Fax
  4. Order your refills
Visit our How to order page.

Frequently Asked Questions

  1. What is Montelukast used for?
    Montelukast is used to manage asthma, prevent exercise-induced bronchoconstriction, and relieve symptoms of allergic rhinitis (hay fever). It blocks leukotrienes that cause inflammation.
  2. How does Montelukast work?
    Montelukast blocks leukotrienes, chemicals that cause inflammation, swelling, and tightening of the airways in asthma and allergy sufferers. This reduces symptoms like shortness of breath, wheezing, and nasal congestion.
  3. When should I take Montelukast?
    Take it one time daily in the evening for asthma and allergies. For exercise-induced bronchoconstriction, it is taken 2 hours before physical activity. Follow your doctor’s advice on the timing based on your condition.
  4. How much time does it take for Montelukast to show its effects?
    Montelukast begins working within 2 hours, but you may need to take it for several days before you notice significant improvement in symptoms like breathing difficulties or allergy relief.
  5. What are the common side effects of Montelukast?
    Common side effects include headaches, stomach pain, cough, dizziness, and diarrhea. It can also cause mood changes such as agitation, anxiety, or depression in some cases.
  6. Can Montelukast be taken with other medications?
    Montelukast generally doesn’t interact with most medications, but always inform your doctor about all medications and supplements you’re taking, especially if you use aspirin or other NSAIDs.
  7. Is Montelukast safe for children?
    Yes, Montelukast is safe for children but is prescribed in different forms and doses based on age. Chewable tablets or oral granules are available for younger children under a doctor's guidance.
  8. Can Montelukast be taken long-term?
    Yes, Montelukast is often prescribed for long-term use to manage asthma and allergies. It should be taken regularly as prescribed, even when symptoms improve.
  9. Can I drink alcohol while taking Montelukast?
    Yes, alcohol consumption is generally safe with Montelukast, but excessive drinking may increase the risk of liver problems.
Dr. Conor Sheehy, PharmD, BCPS

References
Montelukast [package insert]. Laval, Quebec: Pro Doc LTÉE; 2016.

Dr. Conor Sheehy, PharmD, BCPS is a practicing clinical pharmacist that works in primary care. He supports other members of the healthcare team including physicians, mid-level providers, nurses, and other clinical staff. He also likes to use his drug knowledge to inform his patients and the public about the benefits and risks they can expect from their medications. His clinical specialties include: anticoagulation, diabetes management, and psychiatric care.

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