Singulair (Montelukast Sodium)
Singulair is a medicine used for the long-term treatment and prevention of asthma. It is also used to prevent exercise-induced breathing problems. In addition, Singulair is used to relieve nasal symptoms (such as stuffy and runny nose, itching, or sneezing) of seasonal or year-round allergies. Singulair is available as chewable tablets, oral granules, and tablets.
Singulair does not treat the symptoms of a sudden asthma attack. Always have a short-acting rescue inhaler (such as albuterol) to treat sudden symptoms. If you do not have a short-acting inhaler, tell your doctor to have one prescribed for you. Tell your doctor immediately if an asthma attack does not respond to the rescue inhaler or if you require more doses than usual.
Singulair can cause changes in your behavior and mood. Tell your doctor right away if you or your child experience hallucinations, disorientation, agitation, anxiousness, irritability, restlessness, bad or vivid dreams, depression, sleep walking, tremor, trouble sleeping, or suicidal thoughts or actions.
In rare cases, Singulair can increase certain white blood cells in your body and possibly cause swelling of blood vessels throughout your body. Tell your doctor right away if you or your child develops pins and needles or numbness of your arms or legs, a flu-like illness, rash, or pain and swelling in your sinuses.
If you have a condition known as phenylketonuria (an inability to process phenylalanine, a protein in your body), be aware that Singulair chewable tablets contain phenylalanine.