Drug reference

olmesartan

For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.

Drug class

Cardiovascular (ARBs)

Mechanism of action

Blocks binding of angiotensin II to type 1 angiotensin II receptors; blocks vasoconstrictor and aldosterone-secreting effects of angiotensin II

Common side effects

  • Dizziness
  • Headache
  • Fatigue
  • Hyperglycemia
  • Diarrhea

Boxed warnings

  • Discontinue as soon as possible when pregnancy is detected; affects renin-angiotensin system causing oligohydramnios, which may result in fetal injury and/or death

Contraindications

  • Hypersensitivity Do not coadminister with aliskiren in patients with diabetes mellitus or with renal impairment (ie, GFR <60 mL/min/1.73 m²)

Related conditions

Frequently asked questions

What drug class is olmesartan?

olmesartan belongs to: Cardiovascular.

How does olmesartan work?

Blocks binding of angiotensin II to type 1 angiotensin II receptors; blocks vasoconstrictor and aldosterone-secreting effects of angiotensin II

What are the common side effects of olmesartan?

Dizziness, Headache, Fatigue, Hyperglycemia, Diarrhea

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