<prompt> Drug contraindicated in an asthmatic female for treatment for glaucoma -ProstaglandinTimololApraclanidineBromonidine  <response>: Ans. is b i.e., Timolol o As you all know b2 receptors cause bronchodilatation, blockade of b2, mediated bronchodilatation can precipitate bronchospasm and acute attack of asthma.o Timolol is a non-selective b-blocker blocks b1 and b2 receptors. Therefore, it can precipitate acute attack of asthma. 