Drug of choice for Type 1 Brittle asthma is
Brittle asthma is very severe asthma resistant to inhalational Beta 2 agonists. 
DOC for Type1 Brittle Asthma: Subcutaneous Terbutaline.
DOC for Type2 Brittle Asthma: Subcutaneous Adrenaline.
Subcutaneous salbutamol
Subcutaneous terbutaline
Subcutaneous adrenaline
Subcutaneous mometasone