Nicast 10Mg Tablet Contains Montelukast Sodium As The Active Ingredient, Which Is Primarily Used To Prevent And Manage Symptoms Of Asthma And Seasonal Allergies. It Works By Blocking Substances Called Leukotrienes That Can Cause Inflammation In The Airways, Thus Helping To Reduce Asthma Attacks And Allergic Rhinitis Symptoms. Side Effects: Common Side Effects Include Headache, Dizziness, Abdominal Pain, And Fatigue. Some People May Experience Respiratory Issues, Such As Coughing, Or Gastrointestinal Problems, Including Nausea. In Rare Cases, More Severe Allergic Reactions, Mood Changes, Or Sleep Disturbances May Occur. Precautions: Liver Impairment: Use With Caution If You Have Liver Conditions. Pregnancy And Breastfeeding: Consult A Healthcare Provider Before Using This Medication If Pregnant Or Breastfeeding. Allergic Reactions: If You Experience A Rash, Swelling, Or Difficulty Breathing, Seek Immediate Medical Attention.