<prompt> The drug not used in acute asthma isSalbutomolIpratropiumMontelukastHydrocoisone  <response>: Refer KDT 6e p 222 Only bronchodilator drugs are useful for the treatment of acute attack of asthma Beta 2 agonists eg salbutomol, terbutaline. Antichokinergics eg Iprqtropoum, tiotropium Methylxanthine eg Theophylline 