Paper I
2021 May (Supplementary) (2010 Scheme) · 40 marks · 120 min

Question

Second generation antihistaminic agents

Q73 marksShort Notes

Answer

Examples: Cetirizine, Loratadine, Fexofenadine, Desloratadine

Properties

  • Poorly cross the blood-brain barrier — minimal sedation
  • More selective for peripheral H1 receptors — minimal anticholinergic/antiadrenergic side effects
  • Longer duration — once-daily dosing

Uses

  • Allergic rhinitis, urticaria, allergic conjunctivitis

Adverse effects

  • Generally well tolerated, minimal sedation
  • Rarely: headache, dry mouth

Other Years Asked


Revise MBBS
Preview