Montelukast (Singulair) is a once-daily leukotriene receptor antagonist used to prevent asthma and treat allergic rhinitis. In 2020 the FDA added a Boxed Warning for rare but serious neuropsychiatric events; discuss risks and alternatives with your clinician.
Nasal irrigation uses saline to flush mucus and allergens from the nose. It's a low-cost, non-addictive adjunct for allergies, colds, and chronic congestion - but use sterile or boiled water and check with your clinician after recent ear or nasal surgery.
Allergic reactions occur when the immune system misidentifies harmless substances as threats. This article outlines common triggers - seasonal pollen, foods, drugs, insect stings, and pet or dust-mite-related asthma - how to recognize severe reactions like anaphylaxis, and standard diagnostic and treatment options including avoidance, medications, and immunotherapy.