Singulair Chewable Tablet 5 mg (Montelukast Sodium)

Adult dose

Adults should take this medication once daily, with asthma patients taking it in the evening and allergy rhinitis patients determining the dosing time according to their condition. Patients with both asthma and allergic rhinitis should take 1 tablet in the evening once daily. This medication should be administered 1 hour before or 2 hours after a meal.

Child dose

Children aged 6 to 14 years should chew 5 mg of montelukast once daily. This medication should be administered 1 hour before or 2 hours after a meal.

This medication contains the artificial sweetener aspartame, so its use should be limited in patients with the genetic disorder phenylketonuria. It is important to regulate the daily intake of aspartame to no more than the WHO recommended amount of 40 mg/kg, with a maximum of 2.4 g per day for adults. Patients who have allergies to any ingredients in this medication or genetic issues such as lactose intolerance, lactose enzyme deficiency, or glucose-galactose malabsorption should not take it. Although the safety has been evaluated through clinical trials in various age groups with asthma or allergic rhinitis, adverse reactions such as fatigue, headache, abdominal pain, rash, and cough have been reported. In rare cases, systemic eosinophilia and vasculitis symptoms may occur, and if these symptoms arise, immediate consultation with healthcare professionals is necessary. This medication is not used for the treatment of acute asthma attacks, and fast-acting inhaled bronchodilators must always be on hand in emergencies. Corticosteroid medications should not be abruptly discontinued or substituted with this medication; they must be adjusted gradually under a doctor's supervision. Patients with aspirin hypersensitivity should avoid using aspirin or non-steroidal anti-inflammatory drugs while taking this medicine, and the effectiveness of this medication for treating aspirin-sensitive asthma has not been confirmed. Pregnant or breastfeeding women should consult a doctor before taking this medication and should only use it when necessary. Safety has been established in pediatric patients, but safety and efficacy have not been established in infants under 6 months. In case of overdose, there is no specific antidote, so general treatment based on symptoms is necessary, and it should be undertaken according to a doctor's instructions. This medication is sensitive to light, so it should be opened just before taking and used immediately once opened, and it should be stored out of reach of children. If asthma symptoms worsen or neuropsychiatric symptoms occur during use, inform a doctor immediately, and any adjustments to the dosage of other asthma medications should be made according to a doctor's guidance.

Serious side effects

• Hives
• angioedema
• severe swelling (edema)
• difficulty breathing
• chest tightness
• toxic epidermal necrolysis
• Stevens-Johnson syndrome
• severe rash with fever
• blistering
• peeling skin

Mild side effects

• Weakness/fatigue
• fever
• abdominal pain
• indigestion
• infectious gastroenteritis
• toothache
• dizziness
• headache
• nasal congestion
• cough

This medication is sensitive to air and moisture, so it must be stored in a tightly sealed container. Additionally, it should be kept in a cool, dry place away from direct sunlight, ideally at a temperature between 1 and 30 degrees Celsius.

Appearance

Pink, round, chewable tablet with a biconvex shape on both sides

Package unit

28 tablets (7 tablets/PTP × 4)