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benazepril

Sold as Lotensin. Class: ACE inhibitors, plain. First FDA approval 06/25/1991: 35 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.

C

Score breakdown (73/100)

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

Safety: 70

Evidence: 34

Regulatory history: 100

Money & lawsuits: 100

Options: 100

FDA boxed warning

WARNING: FETAL TOXICITY When pregnancy is detected, discontinueLotensin as soon as possible. Drugs thatactdirectlyon the renin-angiotensin system can causeinjury and death to the developing fetus [see Warnings and Precautions (5.1) ] . WARNING-FETAL TOXICITY See full prescribinginformation forcomplete boxed warning. When pregnancyis detected, discontinue Lotensin as soon as possible. ( 5.1 ) Drugs that act directly on the renin-angiotensin system can cause injury and death to the developing fetus. ( 5.1 )

What the FDA label says

Approved uses

1. INDICATIONS AND USAGE Lotensin ® is indicated for the treatment of hypertension, 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. 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, have been shown in randomized controlled trials to reduce cardiovascular morbidity and mortality, ...

Contraindications

4. CONTRAINDICATIONS Lotensin is contraindicated in patients: who are hypersensitive to benazepril or to any other ACE inhibitor with a history of angioedema with or without previous ACE inhibitor treatment Lotensin is contraindicated in combination with a neprilysin inhibitor (e.g., sacubitril). Do not administer Lotensin within 36 hours of switching to or from sacubitril/valsartan, a neprilysin inhibitor [see Warnings and Precautions (5.2) ]. Do not coadminister aliskiren with angiotensin receptor blockers, ACE inhibitors, including Lotensin in patients with diabetes [see Drug Interactions (7.4) ] . Angioedema or history of hereditary or idiopathic angioedema ( 4 ) Hypersensitivity ( 4 ) Coadministration with aliskiren in patients with diabetes ( 4 )

Warnings and precautions

5. WARNINGS AND PRECAUTIONS Angioedema: Discontinue Lotensin and treat appropriately. ( 5.2 ) Monitor renal function periodically. ( 5.3 ) Monitor blood pressure after initiation. ( 5.4 ) Hyperkalemia: Monitor serum potassium periodically. ( 5.5 ) Hepatic toxicity: Monitor for jaundice or signs of liver failure. ( 5.6 ) 5.1 Fetal Toxicity Lotensin can cause fetal harm when administered to a pregnant woman. Use of drugs that act on the renin-angiotensin system 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 Lotensin as soon as possible [see Use in Specific Populations (8.1) ] . 5.2 Angioedema and Anaphylactoid Reactions Angioedema Head and Neck Angioedema Angioedema of the face, extremities, lips, tongue, glottis, and/or larynx including some fatal reactions, have occured in patients treated with Lotensin. Patients with involvement of the tongue, glottis o...

Adverse reactions (label)

6 . ADVERSE REACTIONS Because clinical trials 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. Lotensin has been evaluated for safety in over 6000 patients with hypertension; over 700 of these patients were treated for at least one year. The overall incidence of reported adverse events was similar in Lotensin and placebo patients. The reported side effects were generally mild and transient, and there was no relation between side effects and age, duration of therapy, or total dosage within the range of 2 to 80 mg. Discontinuation of therapy because of a side effect was required in approximately 5% of U.S. patients treated with Lotensin and in 3% of patients treated with placebo. The most common reasons for discontinuation were headache (0.6%) and cough (0.5%). Adverse reactions seen in at least 1% greater frequency in patients treated with Lotensin than placebo were headache (6% vs. 4%), dizziness (4% vs. 2%), somnolence (2% vs. 0%) and postural dizziness (2% vs. 0%). Adverse reactions reporte...

Source: FDA SPL label for Lotensin (Validus Pharmaceuticals LLC), effective 20250930. 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.

11,586reports that mention this drug
11,566of those blame this drug, not another one the person was taking
57%of reports describe a serious outcome, such as a hospital stay (average for all drugs: 57%)
7.9%of reports include a death, from any cause (average for all drugs: 9.1%)

Problems reported most often

Fatigue · 781Drug Ineffective · 685Chronic Kidney Disease · 622Diarrhoea · 621Acute Kidney Injury · 572Nausea · 543Dizziness · 488Headache · 477Pain · 418Dyspnoea · 409Off Label Use · 400Death · 389Renal Failure · 379Fall · 368Arthralgia · 351

Reports per year

20192020202120222023202420252026
1,241920849679558535509364

654 reports blaming this drug for every million Medicare prescriptions filled, which is 0.2× the typical drug on this site. (1,400 reports in 2024–2026, against 2,142,239 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

1recall actions on file
1 / 12brand / generic applications
0label changes since 2021
NoREMS program
DateClassFirmReason
09/2019Class IIIAmneal Pharmaceuticals, Inc.Presence of Foreign Tablet/Capsule; Promethazine HCl tablet found in the Benazepril HCl bottle

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

117randomized trials (PubMed)
2systematic reviews
57registered trials
23%of completed trials posted results
14%terminated or withdrawn
46%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

523,161Medicare Part D patients (2024)
2,142,239prescriptions filled
$10average cost per fill
$22Mtotal Medicare spend

Same-class alternatives

1 drug in the same class grades a letter or more higher than benazepril on this site. Worth asking whether one of them would do the same job for you.

captoprilcilazaprilfosinoprilimidaprilmoexiprilperindoprilquinaprilspirapriltrandolaprilzofenopril

Same ATC pharmacological class, graded ones first, best grade at the top. Being in the same class does not make them interchangeable for your condition; it makes them worth asking about.

Questions to ask your prescriber

  1. This drug carries a boxed warning. Which specific risk does it cover, and does it apply to me?
  2. The most-reported problems in FDA's adverse event data are fatigue, chronic kidney disease, diarrhoea. How would we recognize and handle those?
  3. Why this one over captopril, cilazapril, enalapril? What would make you pick one of those instead?
  4. What result are we expecting, by when, and what is the plan if it does not happen?
  5. 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.)