| Fact Table | |
|---|---|
| Formula | C25H30N2O5•HCl |
| License | FDA approved; Accupril (NDA 019885) was marketed in the U.S. starting November 19, 1991 |
| Bioavailability | ~60% (oral) |
| Legal status | Prescription only (Rx) |
| Chemical Name | [3S-[2[R*(R*)],3R*]]-2-[2-[[1-(Ethoxycarbonyl)-3-phenylpropyl]amino]-1-oxopropyl]-1,2,3,4-tetrahydro-3-isoquinolinecarboxylic acid, monohydrochloride |
| Elimination half-life | ~2 hours |
| Dosage (Strength) | 5 mg, 10 mg, 20 mg, and 40 mg oral tablets; usual adult dose 10–80 mg/day depending on indication |
| Pregnancy | Contraindicated in pregnancy; discontinue as soon as pregnancy is detected |
| Brands | Accupril; generic quinapril hydrochloride available |
| Protein binding | ~97% |
| PubChem CID | 54892 |
| MedlinePlus | a692026 |
| ChEBI | 8713 |
| ATC code | C09AA06 |
| DrugBank | DB00881 |
| KEGG | D03752 |
| Routes of administration | By mouth (oral tablets) |
Accupril (quinapril hydrochloride) is an ACE inhibitor medication used to treat high blood pressure and heart failure. It works by blocking a process in the body that tightens blood vessels, allowing them to relax and making it easier for the heart to pump blood. The medication comes as an oral tablet and can be prescribed alone or alongside other medications to manage cardiovascular conditions.
Quinapril is taken by mouth, typically once or twice daily, with or without food. For high blood pressure, the usual starting dose is 10 mg or 20 mg once daily, which may be changed based on blood pressure response.
Patients already taking diuretics should start with a lower dose of 5 mg. For heart failure, treatment typically begins at 5 mg once or twice daily. The maximum recommended dose is 80 mg daily, which may be given as a single dose or divided into two doses.
Swallow tablets whole and keep consistent timing each day for the best results. Missing doses may reduce effectiveness, so take a missed dose as soon as it's remembered unless it's nearly time for the next scheduled dose.
The active ingredient in Accupril is quinapril.
Before using this medication, you may want to consult a healthcare provider about the following:
Avoid taking or using this medication if any of the following apply:
Common side effects of Accupril include:
These side effects are usually mild and temporary as the body adjusts to the medication. Some people may also experience nausea, vomiting, abdominal discomfort, or diarrhea. Dizziness may occur more often when starting treatment or after dose changes.
More serious side effects are rare but possible. Accupril can sometimes cause low blood pressure, kidney problems, or high potassium levels. Rarely, it may trigger a severe allergic reaction called angioedema, which causes swelling of the face, lips, tongue, or throat and can be life-threatening. Seek immediate medical care if you develop swelling of the face or throat, trouble breathing, or severe dizziness.
What is Accupril used for?
Accupril is the brand name for quinapril, an ACE inhibitor used to treat high blood pressure. It is also used in some patients with heart failure, usually along with other medicines, to help the heart work more effectively and reduce symptoms.
How does Accupril work?
Accupril works by blocking angiotensin-converting enzyme, which helps relax blood vessels. This lowers blood pressure and reduces the workload on the heart, which can improve circulation and help in heart failure management.
How is Accupril usually taken?
Accupril is taken by mouth, usually once or twice a day depending on the condition being treated and the prescribed dose. It should be taken exactly as directed, and it can be taken with or without food unless a clinician gives different instructions.
What are the most common side effects of Accupril?
Common side effects can include cough, dizziness, headache, tiredness, and low blood pressure. Some people may also notice nausea. Dizziness can be more noticeable when first starting treatment or after a dose increase.
Are there serious warnings with Accupril?
Yes. A major warning is that Accupril should not be used during pregnancy because it can harm or even be fatal to a developing baby. It can also rarely cause angioedema, which is swelling of the face, lips, tongue, or throat and can become a medical emergency.
Can Accupril affect kidney function or potassium levels?
Yes. Accupril can affect kidney function in some patients and may raise potassium levels. This is why blood tests may be checked during treatment, especially in people with kidney disease, diabetes, dehydration, or those taking diuretics or potassium supplements.
What medicines can interact with Accupril?
Accupril can interact with diuretics, potassium supplements, salt substitutes containing potassium, NSAID pain relievers, lithium, and some other blood pressure medicines. These interactions can increase the risk of low blood pressure, kidney problems, or abnormal potassium levels.
What should someone know about the cough linked to Accupril?
A dry, persistent cough can happen with ACE inhibitors like Accupril. It is not dangerous in most cases, but it can be bothersome and may continue until the medicine is stopped. Any ongoing cough should be discussed with the prescriber.
What should someone do if they miss a dose?
A missed dose is usually taken as soon as remembered unless it is almost time for the next dose. If it is close to the next scheduled dose, the missed dose should be skipped and the regular dosing schedule resumed. Two doses should not be taken at the same time.
Who should not take Accupril?
Accupril is generally not appropriate for people with a history of ACE inhibitor-related angioedema, certain pregnancy situations, or known allergy to quinapril. People with kidney disease, low blood pressure, or heart failure still may use it, but they often need closer medical monitoring.
A generic drug is a copy of the brand-name drug with the same dosage, safety, strength, quality, consumption method, performance, and intended use. Before generics become available on the market, the generic company must prove it has the same active ingredients as the brand-name drug and works in the same way and in the same amount of time in the body.
The only differences between generics and their brand-name counterparts is that generics are less expensive and may look slightly different (e.g., different shape or color), as trademark laws prevent a generic from looking exactly like the brand-name drug.
Generics are less expensive because generic manufacturers don't have to invest large sums of money to develop a drug. When the brand-name patent expires, generic companies can manufacture a copy of the brand-name and sell it at a substantial discount.