The main island of Puerto Rico is the smallest and most eastern of the Greater Antilles. With an area of 3,515 square miles (9,104 km 2), it is the third largest island in the United States and the 82nd largest island in the world.
Answers. Best Answer: SINGULAIR is a prescription medicine approved to help control symptoms of asthma in adults and children 12 months and older and for relief of symptoms of indoor and outdoor allergies. But it is NOT an antihistamine, but rather an antileukotriene medication. Leukotrienes are chemicals released from a variety of allergic and immune cells, and may cause allergy symptoms, primarily nasal congestion.
June 12, 2009 -- The FDA today asked makers of Singulair, Accolate, Zyflo, and Zyflo CR to include a precaution on those drugs' labels about reports of behavior and mood changes.Singulair is used to treat asthma and symptoms of allergic rhinitis. Accolate, Zyflo, and Zyflo CR are used to treat asthma.All four drugs are leukotriene inhibitors, which affect the leukotriene pathway, which is involved in the body's response to inflammatory stimuli (such as breathing in an allergen).ccolate, Zyflo, and Zyflo CR are used to treat asthma. All four drugs are leukotriene inhibitors, which affect the leukotriene pathway, which is involved in the body's response to inflammatory stimuli (such as breathing in an allergen).