Singulair, or montelukast, is a prescription medication that helps prevent asthma attacks in people aged 12 months and over. Singulair can also provide relief for seasonal, indoor, and outdoor allergies and allergic rhinitis.
Doctors prescribe Singulair on a long-term basis to treat asthma. It can also help relieve symptoms of allergic rhinitis, such as sneezing, stuffy and runny noses, and nasal itching.
It can also prevent exercise-induced bronchospasm in adults and children aged
However, Singulair has severe side effects related to mood, which have caused controversy in recent years.
Singulair has the
- as a treatment for chronic asthma
- to prevent exercise-induced asthma
- to relieve the symptoms of seasonal allergic rhinitis, also known as hay fever
- to relieve the symptoms of perennial allergic rhinitis
People taking Singulair to prevent asthma during physical activity should always speak with their doctor before use.
Singulair does not act fast enough to treat an asthma attack immediately, so a person should not use it to treat sudden asthma attacks. Instead, they should use a rescue inhaler. These have a much quicker effect.
The producers of Singulair advise taking the drug once a day.
The
Chronic asthma
For treating chronic asthma, a person should take Singulair in the evening in the following amounts:
- 15 years or older: 10 milligrams (mg)
- 6–14 years: 5 mg
- 12 months–5 years: 4 mg
Children under 12 months should not take Singulair for exercise-induced asthma, as there are no clinical studies to support its use by this age group.
Children aged 6–23 months should take Singulair in oral granule form, as the Food and Drug Administration (FDA) has not approved tablets for this age group. A person should give a child granules within 15 minutes of opening the packet.
Exercise-induced asthma
People who use Singulair to prevent exercise-induced asthma should take the drug
A person should separate daily doses by at least 24 hours.
Recommended dosages are 10 mg for people aged 15 years or older and 5 mg for people aged 6—14 years.
Children under 6 years old should not take Singulair for exercise-induced asthma, as there are no clinical studies to support its use by this age group.
Seasonal allergic rhinitis
A person with seasonal allergic rhinitis can take Singulair in the morning or evening in the following dosages:
- 15 years or older: 10 mg
- 6–14 years: 5 mg
- 2–5 years: 4 mg
Children under 2 years old should not take Singulair for seasonal allergic rhinitis, as there are no clinical studies to support its use by this age group.
Perennial allergic rhinitis
A person with perennial allergic rhinitis can take Singulair in the morning or evening in the following dosages:
- 15 years or older: 10 mg
- 6–14 years: 5 mg
- 6 months–5 years: 4 mg
Children aged 6–23 months should take Singulair in oral granule form, as tablets are not FDA-approved for this age group. A person should give a child granules within 15 minutes of opening the packet.
Singulair is also available as a cherry-flavored chewable tablet for children aged 24 months to 14 years.
A person who has both asthma and allergic rhinitis should take one dose daily in the evening.
How long does it take to work?
Singulair tablets begin to work within
Singulair
Leukotrienes are fatty signaling molecules that the body produces when there is inflammation. Researchers believe they may play a key role in triggering asthma and hay fever symptoms.
These molecules contribute to the way asthma develops, causing a range of effects, including:
- inflammation and swelling in the airways
- airflow obstruction
- airway constriction
- increased secretion and buildup of mucus
When a person inhales asthma triggers, such as pollen, the body reacts by releasing leukotrienes.
Leukotrienes cause swelling and inflammation in the lungs and airways. The muscles in the airways tighten, resulting in asthma symptoms, including:
When Singulair blocks leukotrienes, it helps to prevent asthma symptoms.
The most common side effects of Singulair include:
People should report the following adverse effects to a doctor:
- a skin rash or hives
- bruising
- pain or muscle weakness
- bleeding
- pinpoint spots under the skin
Research suggests a link between Singulair and
- hostility
- aggression
- agitation
- vivid and unpleasant dreams
- confusion
- anxiety
- hallucinations
- sleepwalking
- suicidal thoughts
- insomnia
- tremor
- depression
Children and younger people using the medication are particularly at risk of these side effects. In March 2020, the
The FDA also cautions people not to stop taking Singulair without first discussing this with a healthcare professional.
A person should report any worsening asthma symptoms to a doctor. If Singulair triggers an allergic reaction, seek immediate medical assistance.
The chewable tablets contain a component of aspartame called phenylalanine. Some people are allergic to this substance and should not use Singulair.
Help is out there
If you or someone you know is in crisis and considering suicide or self-harm, please seek support:
- Call or text the 988 Lifeline at 988 or chat at 988lifeline.org. Caring counselors are available to listen and provide free and confidential support 24/7.
- Text HOME to the Crisis Text Line at 741741 to connect with a volunteer crisis counselor for free and confidential support 24/7.
- Not in the United States? Find a helpline in your country with Befrienders Worldwide.
- Call 911 or your local emergency services number if you feel safe to do so.
If you’re calling on behalf of someone else, stay with them until help arrives. You may remove weapons or substances that can cause harm if you can do so safely.
If you’re not in the same household, stay on the phone with them until help arrives.
Singulair or montelukast is a drug that gradually reduces the risk of asthma flare-ups by blocking the action of leukotrienes. These are fatty signaling molecules, which the body uses during inflammation and allergic reactions.
Singulair is available as chewable tablets, granules, and regular tablets, and dosage depends on the age of the person with inflammation or asthma.
However, the FDA warns that Singulair can lead to severe side effects, including difficulties with psychological health, especially in young people.
Q:
Can I take Singulair while using other medications?
AnonymousA:
Singulair is safe to take with most medications.
Discuss all medications you are taking with your doctor and pharmacist to ensure that Singulair is safe to take with your medications.
Dena Westphalen, Pharm.D Answers represent the opinions of our medical experts. All content is strictly informational and should not be considered medical advice.