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

Question

Telmisartan

Q53 marksShort Notes

Answer

Telmisartan is an angiotensin II receptor blocker (ARB).

Mechanism of action

  • Selectively and competitively blocks AT1 receptors, preventing angiotensin II-mediated vasoconstriction and aldosterone secretion
  • Has a very long half-life, allowing once-daily dosing; also has some PPAR-γ agonist activity, potentially improving insulin sensitivity

Uses

  • Hypertension
  • Cardiovascular risk reduction in high-risk patients
  • Diabetic nephropathy (renoprotective)

Adverse effects

  • Hyperkalaemia
  • Hypotension
  • Teratogenic — contraindicated in pregnancy
  • Angioedema (rare)
  • No significant cough (advantage over ACE inhibitors)

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