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Irbesartan skeletal.svg
Trade namesAvapro, others
Clinical data
Drug classCardiovascular agent
Routes of
By mouth
Defined daily dose150 mg[2]
External links
License data
Legal status
  • AU: S4 (Prescription only)
  • UK: POM (Prescription only)
  • US: ℞-only
  • In general: ℞ (Prescription only)
Bioavailability60% to 80%
Protein binding~90%
MetabolismLiver (CYP2C9)
Elimination half-life11 h to 15 h
ExcretionKidney 20%, feces 65%
Chemical and physical data
Molar mass428.540 g·mol−1
3D model (JSmol)

Irbesartan, sold under the brand name Avapro among others, is a medication used to treat high blood pressure, heart failure, and diabetic kidney disease.[3] It is a reasonable initial treatment for high blood pressure.[3] It is taken by mouth.[3] Versions are available as the combination irbesartan/hydrochlorothiazide.[3][4]

Common side effects include dizziness, diarrhea, feeling tired, muscle pain, and heartburn.[3][5] Serious side effects may include kidney problems, low blood pressure, and angioedema.[3] Use in pregnancy may harm the baby and use when breastfeeding is not recommended.[6] It is an angiotensin II receptor antagonist and works by blocking the effects of angiotensin II.[3]

Irbesartan was patented in 1990, and approved for medical use in 1997.[7] It is available as a generic medication.[5] A month supply in the United Kingdom costs the NHS less than two pounds as of 2019.[5] In the United States the wholesale cost of this amount is about six dollars.[8] In 2017, it was the 220th most commonly prescribed medication in the United States, with more than two million prescriptions.[9][10]

Medical uses

As with all angiotensin II receptor antagonists, irbesartan is used for the treatment of high blood pressure. It may also delay progression of diabetic nephropathy and the reduction of kidney disease progression in type 2 diabetes,[11] hypertension and microalbuminuria (>30 mg/24 h) or proteinuria (>900 mg/24 h).[12]

Irbesartan is also available in a combination formulation with a low-dose thiazide diuretic, invariably hydrochlorothiazide, to achieve an additive antihypertensive effect.[4][13] Irbesartan/hydrochlorothiazide combination preparations are marketed under various brand names.[14]


The defined daily dose is 150 mg by mouth.[2]

Society and culture

It was developed by Sanofi Research (part of Sanofi-Aventis). It is jointly marketed by Sanofi-Aventis and Bristol-Myers Squibb under the brand names Aprovel, Karvea, and Avapro.[4][1]


  1. 1.0 1.1 1.2 "Irbesartan (Avapro) Use During Pregnancy". 16 August 2018. Retrieved 19 March 2020.
  2. 2.0 2.1 "WHOCC - ATC/DDD Index". Retrieved 7 September 2020.
  3. 3.0 3.1 3.2 3.3 3.4 3.5 3.6 "Irbesartan Monograph for Professionals". American Society of Health-System Pharmacists. Retrieved 3 March 2019.
  4. 4.0 4.1 4.2 "Avalide- irbesartan and hydrochlorothiazide tablet, film coated". DailyMed. 31 July 2018. Retrieved 19 March 2020.
  5. 5.0 5.1 5.2 British national formulary : BNF 76 (76 ed.). Pharmaceutical Press. 2018. p. 175. ISBN 9780857113382.
  6. "Irbesartan Pregnancy and Breastfeeding Warnings". Retrieved 3 March 2019.
  7. Fischer, Jnos; Ganellin, C. Robin (2006). Analogue-based Drug Discovery. John Wiley & Sons. p. 470. ISBN 9783527607495.
  8. "NADAC as of 2019-02-27". Centers for Medicare and Medicaid Services. Retrieved 3 March 2019.
  9. "The Top 300 of 2020". ClinCalc. Retrieved 11 April 2020.
  10. "Irbesartan - Drug Usage Statistics". ClinCalc. Retrieved 11 April 2020.
  11. Lewis EJ, Hunsicker LG, Clarke WR, Berl T, Pohl MA, Lewis JB, Ritz E, Atkins RC, Rohde R, Raz I, Collaborative Study Group (2001). "Renoprotective effect of the angiotensin-receptor antagonist irbesartan in patients with nephropathy due to type 2 diabetes". N Engl J Med. 345 (12): 851–60. doi:10.1056/NEJMoa011303. hdl:2445/122787. PMID 11565517.
  12. Rossi S, editor. Australian Medicines Handbook 2006. Adelaide: Australian Medicines Handbook; 2006. ISBN 0-9757919-2-3
  13. "Irbesartan and Hydrochlorothiazide (Professional Patient Advice)". 5 June 2019. Retrieved 19 March 2020.
  14. "Irbesartan and hydrochlorothiazide Advanced Patient Information". 24 December 2019. Retrieved 19 March 2020.

External links

External sites: