<prompt> Which of the following is NOT a first line antihypeensive agent?EnalaprilHydrochlohiazideAmlodipineAtenolol  <response>: ACD are first-line antihypeensives A-ACE inhibitors and ARBs C-calcium channel blockers D-Diuretics Beta blockers are not 1st line agents due to side effect profile Ref-. Essentials of medical pharmacology K D TRIPATHI 8th Edition 