<prompt> Enalapril increases the level of:InterferonGrowth factorsBradykininAll of the above  <response>: Enalapril is an ACE inhibitor and the adverse effect profile of all ACE inhibitors is similar. One side effect is cough in the patients taking ACE inhibitor.A persistent brassy cough occurs in 10- 16 patients within 1- 8 weeks, often requires discontinuation of the drug-subsides 4- 6 days thereafter. It is not dose related and appears to be caused by inhibition of bradykininsubstance P breakdown which leads to increase in levels of Bradykinin in the lungs of susceptible individuals.Reference: Essentials of Medical Pharmacology Eighth Edition KD TRIPATHI page no 531 