Medicine Name: Spirodin-M Tablet SR. Composition: Doxofylline (400mg) + Montelukast (10mg). Side Effects: Nausea Vomiting Headache Abdominal pain Diarrhea Upper respiratory tract infection Rash Fever Epigastric pain Tachycardia Extrasystoles Increased respiratory rate Pharyngitis Cough Increased liver enzymes Otitis media infection of ear Influenza Runny nose Sinus inflammation.