Singulair, originally sold by Merck & Co., is a prescription drug that was launched in 1998 and is used to prevent and treat symptoms of asthma and allergies, according to the Cleveland Clinic ...

The drug Singulair is typically prescribed to patients with allergies or asthma. The medication has received attention recently due to its being linked to mental health side effects including ...

For patients with allergic rhinitis ... Add-on oral antihistamines or montelukast (Singulair) do not add much benefit. In three separate trials, researchers randomized 3398 adolescent and adult ...