Brand Name: Singulair® 
      Active Ingredient: montelukast sodium 
      Strength(s): 4 mg, 5 mg chewable tablets, and 10 mg oral   tablets 
      Dosage Form(s): Oral tablets and chewable tablets 
      Company Name: Merck Research Laboratories 
      Availability: Prescription only 
      Date Approved by FDA: February 20, 1998 
     
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    What is Singulair used for? Singulair is taken to prevent and   treat asthma.  The oral tablets are for asthma patients age 15 years and older,   and the chewable tablets are for pediatric patients 2 years of age and older.    Do not take Singulair to relieve an asthma attack. It is not a replacement for   the quick help that short acting inhalers provide during an asthma attack. It is   very important that you continue taking your other asthma medicines unless your   health care provider tells you to stop.  
      General Precautions with Singulair:  
       
        - It is very important that you continue to take your other asthma   medicines unless your doctor tells you to stop.   
        
 - If your asthma is made worse by aspirin, you should continue to avoid   aspirin or other non-steroidal anti-inflammatory drugs.   
        
 - Phenylketonuric patients should be aware that the chewable tablet for   Singulair contains phenylalanine (a part of aspartame). 
 
       
       What should I tell my doctor or health care provider?
      
        - Tell your doctor or health care provider if you are trying to become   pregnant, are already pregnant, or are breast-feeding. 
 
       
      What are some possible side effects of Singulair? (This list   is NOT a complete list of side effects reported with Singulair.   Your health care provider can discuss with you a more complete list of side   effects.)   
       
        - Feeling tired   
        
 - Fever   
        
 - Stomach pain    
        
 - Upset stomach   
        
 - Intestinal upset   
        
 - Heartburn   
        
 - Dizziness   
        
 - Headache 
 
       
       Reports of patients’ experiences after Singulair became   available include:
      
      
        - Allergic reactions including swelling of the face, lips, tongue,   and/or throat, (which may cause difficulty in breathing or swallowing), hives,   and itching. Stop taking Singulair and call your doctor if you experience any of   these symptoms.
        
 - A rare condition, that includes a combination of certain symptoms   which do not go away or get worse, including a flu-like illness, rash, pins and   needles or numbness of arms or legs, and severe inflammation of the sinuses.   These have usually occurred, but not always, in people whose oral steroid   medicines for asthma were being gradually lowered or stopped. Although Singulair   has not been shown to cause this condition, you must tell your doctor right away   if you get one or more of these symptoms. 
 
       
      Updated: 11/19/99 
        Updated: 3/28/00 
      Revised: 7/25/00,   6/22/01 
       
        
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