House dust mite allergen extract and Singulair

• Generic Name: house dust mite allergen extract
• Dosage Forms: n.a.
• Other Brand Names: JointFlex, Original Ointment, Odactra

house dust mite allergen extract contains allergen extract from common household dust mites. Dust mite allergies can trigger breathing problems or skin reactions.

House dust mite allergen extract is used to help your body develop an immunity to dust mites, and reduce symptoms such as sneezing, itching, and eye redness. This medicine is for use in adults up to age 65.

House dust mite allergen extract may also be used for purposes not listed in this medication guide.

• Generic Name: montelukast
• Dosage Forms: tablets, chewable tablets, oral granules
• Other Brand Names: Singulair

Singulair (montelukast) is a leukotriene (loo-koe-TRY-een) inhibitor. Leukotrienes are chemicals your body releases when you breathe in an allergen (such as pollen). These chemicals cause swelling in your lungs and tightening of the muscles around your airways, which can result in asthma symptoms.

Singulair is used to prevent asthma attacks in adults and children as young as 12 months old. Singulair is also used to prevent exercise-induced bronchospasm in adults and children who are at least 6 years old.

Singulair is also used to treat symptoms of year-round (perennial) allergies in adults and children who are at least 6 months old. It is also used to treat symptoms of seasonal allergies in adults and children who are at least 2 years old.

Do not give this medicine to a child without a doctor's advice.

Singulair is also used to prevent exercise-induced bronchoconstriction (narrowing of the air passages in the lungs) in adults and teenagers who are at least 15 years old and are not already taking this medicine for other conditions.

If you already take Singulair to prevent asthma or allergy symptoms, do not use an extra dose to treat exercise-induced bronchoconstriction.