Lisinopril: uses, dosing, side effects & brands

Qbrelis (Lisinopril) is an angiotensin converting enzyme inhibitor used to treat Diabetic Nephropathies, Heart Failure, Hypertension, Myocardial Infarction.

The FDA classifies lisinopril as an angiotensin converting enzyme inhibitor. If you are checking whether it is safe to combine with something else, the class is what matters — two drugs from the same class usually should not be stacked.

The label carries a boxed warning and a §8.1 Pregnancy risk summary stating lisinopril can cause fetal harm. As a drug acting on the renin-angiotensin system, use in the second and third trimesters reduces fetal renal function and increases fetal and neonatal illness and death; it can cause oligohydramnios leading to reduced fetal kidney function, lung underdevelopment, skull and skeletal deformities, low blood pressure, and death. The label directs that when pregnancy is detected, lisinopril be discontinued as soon as possible. If there is no appropriate alternative, the mother should be told of the potential fetal risk and monitored with serial ultrasounds; exposed infants should be watched for low blood pressure, low urine output, and high potassium. Anyone pregnant or planning pregnancy should consult their prescriber — do not start or stop this medication on your own. This is what lisinopril's FDA label says; whether to use it in pregnancy is your prescriber's decision.

The elimination half-life of lisinopril is about 12 hours (the effective half-life, in adults with normal kidney function) — that is how long the body takes to clear half of a dose. Lisinopril is not metabolized and is cleared unchanged by the kidneys, so its half-life is longer in people with reduced kidney function and in older adults; how much is absorbed also varies widely between individuals. The 12-hour figure is the label's "effective half-life of accumulation" (the clinically meaningful value), not a single-dose terminal half-life. Half-life is not the same as how long a drug test can detect the drug, and it varies with age, kidney and liver function.

It depends on the medicine. We check it against the FDA labels rather than guessing: our interaction checker searches each drug's own label for the other and quotes what it says, naming the section it came from. Run lisinopril against whatever else you take — and remember that a label not naming a drug is not the same as that combination being safe.

We track 3 lisinopril-containing products in the U.S.: Lisinopril, Prinivil and Qbrelis. They are the same active ingredient; they differ in form, manufacturer, price and FDA recall record.

Across the brands we track, lisinopril is currently marketed as tablet and solution, per the FDA's National Drug Code Directory. Each form is dosed differently — follow the label for the exact product you were prescribed.

Yes. Our catalog lists 1 generic lisinopril product alongside the brand versions. A generic has the same active ingredient and must meet the FDA's bioequivalence standard; it usually costs less. Ask your pharmacist which one your plan covers.

The FDA's Enforcement database lists 2 recall records whose product description mentions lisinopril. The most recent: Lisinopril and Hydrochlorothiazide Tablets USP 20mg/12.5mg (Jun 20, 2025). A recall applies to specific lots, not to the drug as a whole — check the record for the affected lot numbers.

Lisinopril starts lowering blood pressure within a few hours of the first dose, but the full effect builds over about 2 to 4 weeks of daily use. Because high blood pressure usually has no symptoms, you will not 'feel' it working — the way to know is by measuring your blood pressure over time.

Food: salt substitutes containing potassium, and large amounts of potassium-rich foods or supplements — see the food section above for what each one does and whether it means avoiding it or just being consistent. This is what the FDA label and our cited sources say — it is not a complete list. Your pharmacist can check your own combination.

The side effects most people notice are usually mild. MedlinePlus lists cough, dizziness, headache, excessive tiredness, nausea, diarrhea, weakness, sneezing, runny nose, decreased sexual ability, and rash. Dizziness and lightheadedness are most likely when you first start or after a dose increase, because that is when your blood pressure drops the most — standing up slowly helps. Many of these ease as your body adjusts over the first week or two. The one exception is the dry cough, which tends to appear later and does not fade (see below). This is not a complete list; report anything persistent or worsening to your prescriber.

Get emergency help right away, per MedlinePlus, for: "swelling of the face, throat, tongue, lips, eyes, hands, feet, ankles, or lower legs, hoarseness, difficulty breathing or swallowing." This is angioedema — the most dangerous lisinopril reaction, because throat or tongue swelling can block the airway. Do not wait to see if it passes. Also call your doctor immediately for fever, sore throat, chills or other signs of infection; yellowing of the skin or eyes; lightheadedness or fainting; or chest pain. Angioedema can start at any point in treatment — StatPearls notes it "can occur anytime during therapy but most commonly occurs within the first 3 months" — so a normal first few weeks does not rule it out later.

It depends on the effect. Dizziness and lightheadedness tend to show up early — with the first doses or after an increase — and usually settle within a week or two as your body adapts. The signature ACE-inhibitor dry cough is different: StatPearls describes "a dry, nonproductive, hacking cough that usually begins within months of initiating therapy and resolves within 1 to 4 weeks after discontinuing." So a new nagging cough weeks or months in can absolutely be the lisinopril, and it does not improve while you keep taking the drug. Angioedema most often appears in the first 3 months but can occur anytime. These are typical patterns, not guarantees — timing varies from person to person.

Lisinopril is taken for years, so two lab values are watched: potassium and kidney function. Because ACE inhibitors reduce potassium excretion, StatPearls notes the drug "may result in a slight increase in serum potassium" — higher if you also take potassium-sparing diuretics or potassium-containing salt substitutes, which MedlinePlus says to discuss with your doctor first. Kidney-wise, a small rise in creatinine early on is often "benign" per StatPearls; doctors monitor potassium, blood pressure, and BUN/creatinine after starting and reserve stopping the drug for a "progressive or significant elevation." Regular blood tests catch these before they cause harm — one reason lisinopril is generally considered safe for long-term use under monitoring.

The dry cough does not fade while you stay on lisinopril — it is triggered by the drug's mechanism, not an allergy or infection, and StatPearls says it "resolves within 1 to 4 weeks after discontinuing." It is a genuine, well-documented reason people are switched to a different blood-pressure drug (commonly an ARB such as losartan, which works similarly without the cough). But do not stop lisinopril on your own — that can send your blood pressure back up. Tell your prescriber; the switch is a routine, prescriber-managed decision, not something to attempt yourself.

No. MedlinePlus is explicit: "Do not take lisinopril if you are pregnant. If you become pregnant while taking lisinopril, call your doctor immediately. Lisinopril may harm the fetus." ACE inhibitors can cause serious injury or death to a developing baby, especially in the second and third trimesters. If you are pregnant, planning pregnancy, or think you might be, contact your prescriber right away so they can move you to a blood-pressure medication that is safe in pregnancy — but do not stop treating high blood pressure on your own, as uncontrolled hypertension is also dangerous.