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What is Drug of choice for Type 1 Brittle asthma is and explain in detail?
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.