RxDecoder My Rx
‹ All drugs

olmesartan

Sold as Benicar. First FDA approval 04/25/2002: 24 years on the US market.

This grade answers one narrow question: how strong is the public evidence and safety record behind this drug, and how clean is its money trail and court record? It is not a verdict on whether the drug is right for you.

D

Score breakdown (59/100)

Safety ×35%
F
Evidence ×25%
F
Regulatory ×15%
A
Money & lawsuits ×15%
A
Options ×10%
C

Safety: 40

Evidence: 38

Regulatory history: 93

Money & lawsuits: 100

Options: 70

FDA boxed warning

WARNING: FETAL TOXICITY When pregnancy is detected, discontinue Benicar as soon as possible (5.1, 8.1). Drugs that act directly on the renin-angiotensin system can cause injury and death to the developing fetus (5.1, 8.1). WARNING: FETAL TOXICITY See full prescribing information for complete boxed warning. When pregnancy is detected, discontinue Benicar as soon as possible ( 5.1 , 8.1 ). Drugs that act directly on the renin-angiotensin system can cause injury and death to the developing fetus ( 5.1 , 8.1 ).

Independent reviews and post-approval warnings

FDA Drug Safety Communications

Warnings the FDA chose to announce publicly after approval, as opposed to quiet label edits. Class-wide items name the drug's class, not this drug specifically.

Prescrire: drug to avoid

Olmesartan, an angiotensin II receptor blocker (ARB or sartan) marketed alone or in combination with hydrochlorothiazide or amlodipine, is no more effective than other ARBs against the cardiovascular complications of hypertension. However, it can cause sprue-like enteropathy leading to chronic diarrhoea (potentially severe) and weight loss, autoimmune hepatitis, and possibly an increase in cardiovascular mortality (Prescrire Int n° 148, 171, 242; Rev Prescrire n° 324, 374). Among the many other ARBs available, it is better to choose losartan or valsartan, which do not appear to have these adve...

Prescrire is a French independent review funded only by subscribers, with no industry money. Its annual "drugs to avoid" list (2026 edition, section: Cardiology) names drugs it judges more harmful than useful in every authorised indication. Its view is one expert opinion, reached without a conflict of interest.

What the FDA label says

Approved uses

Benicar is indicated for the treatment of hypertension in adults and children six years of age and older, to lower blood pressure. Lowering blood pressure reduces the risk of fatal and nonfatal cardiovascular events, primarily strokes and myocardial infarctions. These benefits have been seen in controlled trials of antihypertensive drugs from a wide variety of pharmacologic classes including the class to which this drug principally belongs. There are no controlled trials demonstrating risk reduction with Benicar. Control of high blood pressure should be part of comprehensive cardiovascular risk management, including, as appropriate, lipid control, diabetes management, antithrombotic therapy, smoking cessation, exercise, and limited sodium intake. Many patients will require more than one drug to achieve blood pressure goals. For specific advice on goals and management, see published guidelines, such as those of the National High Blood Pressure Education Program's Joint National Committee on Prevention, Detection, Evaluation, and Treatment of High Blood Pressure (JNC). Numerous antihypertensive drugs, from a variety of pharmacologic classes and with different mechanisms of action, ha...

Contraindications

Do not co-administer aliskiren with Benicar in patients with diabetes [see Drug Interactions (7.3) ]. Do not co-administer aliskiren with Benicar in patients with diabetes ( 4 ).

Warnings and precautions

Avoid fetal ( in utero ) exposure ( 5.1 ). Use of Benicar in children <1 year of age is not recommended ( 5.2 ). Observe for signs and symptoms of hypotension in volume- or salt-depleted patients with treatment initiation ( 5.3 ). Monitor for worsening renal function in patients with renal impairment ( 5.4 ). Sprue-like enteropathy has been reported. Consider alternative antihypertensive therapy in cases where no other etiology is found ( 5.5 ). 5.1 Fetal Toxicity Benicar can cause fetal harm when administered to a pregnant woman. Use of drugs that act on the renin-angiotensin system (RAS) during the second and third trimesters of pregnancy reduces fetal renal function and increases fetal and neonatal morbidity and death. Resulting oligohydramnios can be associated with fetal lung hypoplasia and skeletal deformations. Potential neonatal adverse effects include skull hypoplasia, anuria, hypotension, renal failure, and death. When pregnancy is detected, discontinue Benicar as soon as possible [see Use in Specific Populations (8.1) ]. 5.2 Morbidity in Infants Use of Benicar in children <1 year of age is not recommended. Drugs that act directly on the renin-angiotensin-aldosterone syst...

Adverse reactions (label)

The most common adverse reaction in adults was dizziness (3%) ( 6.1 ). To report SUSPECTED ADVERSE REACTIONS, contact Cosette Pharmaceuticals, Inc. at 1-800-922-1038 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch. 6.1 Clinical Trials Experience Because clinical studies are conducted under widely varying conditions, adverse reaction rates observed in the clinical studies of a drug cannot be directly compared to rates in the clinical studies of another drug and may not reflect the rates observed in practice. Adult Hypertension Benicar has been evaluated for safety in more than 3825 patients/subjects, including more than 3275 patients treated for hypertension in controlled trials. This experience included about 900 patients treated for at least 6 months and more than 525 for at least 1 year. Events generally were mild, transient and had no relationship to the dose of Benicar. Analysis of gender, age and race groups demonstrated no differences between Benicar and placebo-treated patients. The rate of withdrawals due to adverse reactions in all trials of hypertensive patients was 2.4% (i.e., 79/3278) of patients treated with Benicar and 2.7% (i.e., 32/1179) of control patients. In pla...

Recent major label changes

Warnings and Precautions ( 5.3 , 5.6 ) 10/2019

Source: FDA SPL label for Benicar (Cosette Pharmaceuticals, Inc.), effective 20230712. Full label on DailyMed.

Side-effect reports sent to the FDA

These are counts of reports people filed, not rates of harm. Anyone can file one, and nobody checks whether the drug was the cause. Millions of doses are taken for every report sent, so the useful part is how this drug compares with the average across all drugs.

38,563reports that mention this drug
38,470of those blame this drug, not another one the person was taking
74%of reports describe a serious outcome, such as a hospital stay (average for all drugs: 57%)
5.8%of reports include a death, from any cause (average for all drugs: 9.1%)

Problems reported most often

Sprue-Like Enteropathy · 3,929Diarrhoea · 3,138Acute Kidney Injury · 2,664Weight Decreased · 2,397Gastrooesophageal Reflux Disease · 2,102Dizziness · 1,960Drug Ineffective · 1,951Nausea · 1,942Fatigue · 1,843Hypotension · 1,409Off Label Use · 1,398Dyspnoea · 1,373Constipation · 1,358Haemorrhoids · 1,350Headache · 1,311

Reports per year

20192020202120222023202420252026
3,8522,7182,4802,5662,4682,3002,3301,330

1,684 reports blaming this drug for every million Medicare prescriptions filled, which is 0.6× the typical drug on this site. (5,927 reports in 2024–2026, against 3,518,783 Medicare fills in one year. This is the one number here that accounts for how many people take the drug.)

Source: the FDA's Adverse Event Reporting System (FAERS). Reports are voluntary and unverified. Drugs that are prescribed a lot, in the news, or in lawsuits attract more reports, so the percentages are compared with the whole database to correct for that partly, not fully.

Recalls and regulatory record

2recall actions on file
1 / 25brand / generic applications
0label changes since 2021
NoREMS program
DateClassFirmReason
04/2021Class IIIAscend Laboratories LLCPresence of Foreign Tablet/Capsule
01/2020Class IIAscend Laboratories LLCcGMP Deviations; Olmesartan Medoximil Tablets 20 mg was released in error with alternate API source prior to filing and approval of Prior Approval Supplement.

Class I = reasonable probability of serious harm. Class II = temporary or reversible harm. Class III = unlikely to harm. Most generic recalls are manufacturing or labeling defects for one lot, not a verdict on the molecule.

Evidence base

203randomized trials (PubMed)
15systematic reviews
164registered trials
32%of completed trials posted results
6%terminated or withdrawn
68%industry-funded

Counts measure how much evidence exists and how transparent it is, not how big the benefit is. For that, ask your prescriber: if 100 people like me took this, how many would get better because of it, and how many would be harmed? (Doctors call these the "number needed to treat" and "number needed to harm.") It differs by condition and is the number drug ads leave out. Sources: PubMed, ClinicalTrials.gov.

Money and lawsuits

In 2024, drug companies reported $0 in payments to US physicians and hospitals tied to this drug across 0 transactions.

No pending federal MDL names this drug or its brands.

Not named in any federal pharmaceutical settlement of $100M or more on record.

Sources: CMS Open Payments (Sunshine Act); Judicial Panel on Multidistrict Litigation pending docket list; DOJ settlements as tabulated on Wikipedia with links to the primary record. State-court and individual suits are not included.

Who takes it and what it costs

916,441Medicare Part D patients (2024)
3,518,783prescriptions filled
$24average cost per fill
$83Mtotal Medicare spend
ProductFills$/fill
Olmesartan Medoxomil3,499,458$20
Benicar19,325$725

Same-class alternatives

No same-class alternatives found in RxClass.

Questions to ask your prescriber

  1. In 2014 the FDA issued a safety communication about this drug (FDA review of cardiovascular risks for diabetics taking hypertension drug olmesartan not conclusive; label upd). Does that risk apply to me?
  2. An independent reviewer (Prescrire) lists this as a drug to avoid because the harms outweigh the benefits versus alternatives. What is your view on that?
  3. This drug carries a boxed warning. Which specific risk does it cover, and does it apply to me?
  4. The most-reported problems in FDA's adverse event data are sprue-like enteropathy, diarrhoea, acute kidney injury, weight decreased. How would we recognize and handle those?
  5. What result are we expecting, by when, and what is the plan if it does not happen?
  6. If 100 people like me took this drug, how many would actually get better because of it, and how many would be harmed by it? (Doctors call these the number needed to treat and the number needed to harm.)