Duolin is basically a controller inhaler, it is used to relieve or control the attack as it acts within 2 to 3 mins. On the other hand, foracort helps in both controlling the attack and preventing future ones. The dosage depends on condition of the patient,diagnosis and component of allergy. Need more details for your case
Next Steps
you can share your symptoms and then we can decide how to go about it.
CBC with AEC will be helpful
Health Tips
Steam inhalation and Yoga including deep breathing exercises are a great way to prevent further episodes.. or at least reduce them