Thanks for the query to H.C.M. Forum.
Directly coming to the point as you require prednisolone
so this is known as WYSOLONE
and available in USA .
Being as a doctor I would come up with this conclusion that this is the most dangerous drug for an asthmatic patient as regarding for long term use.
In my opinion you should not use this drug at all.
Your main complaint is dry hacking cough
with asthmatic attack .
In such severe cases I usually prescribe Monteleukast+ bambuterol twice in day ( tablets).
You can use hot coffee as it will also help.
Steam inhalation will provide instant relief .
Chew ginger till relief.
Good luck. Dr. HET