section name header

Pronunciation ⬇

benazepril: ben-AYE-ze-pril

captopril: KAP-toe-pril

Enalapril/Enalaprilat: e-NAL-a-pril/e-NAL-a-pril-at

fosinopril: foe-SIN-oh-pril

lisinopril: lyse-IN-oh-pril

moexipril: moe-EKS-i-pril

perindopril: pe-RIN-do-pril

quinapril: KWIN-a-pril

ramipril: ra-MI-pril

trandolapril: tran-DOE-la-pril

Classifications ⬆ ⬇

Therapeutic Classification: antihypertensives

Pharmacologic Classification: ace inhibitors

Indications ⬆ ⬇

REMS

Captopril, enalapril, fosinopril, lisinopril, quinapril, ramipril, trandolapril:

Captopril, lisinopril, ramipril, trandolapril:

Enalapril:

Ramipril:

Captopril:

Perindopril:

Action ⬆ ⬇

Therapeutic Effects:

Pharmacokinetics ⬆ ⬇

Absorption: Benazepril — 37% absorbed after oral administration. Captopril — 60–75% absorbed after oral administration (↓ by food). Enalapril — 55–75% absorbed after oral administration. Enalaprilat — IV administration results in complete bioavailability. Fosinopril — 36% absorbed after oral administration. Lisinopril — 25% absorbed after oral administration (much variability). Moexipril — 13% bioavailability as moexiprilat after oral administration (↓ by food). Perindopril — 25% bioavailability as perindoprilat after oral administration. Quinapril — 60% absorbed after oral administration (high-fat meal may ↓ absorption). Ramipril — 50–60% absorbed after oral administration. Trandolapril — 70% bioavailability as trandolapril at after oral administration.

Distribution: All ACE inhibitors cross the placenta. Benazepril, captopril, enalapril, fosinopril, quinapril, and trandolapril — Enter breast milk. Lisinopril — Minimal penetration of CNS. Ramipril — Probably does not enter breast milk. Trandolapril — Enters breast milk.

Protein Binding: Benazepril — 95%, Fosinopril — 99.4%, Moexipril — 90%, Quinapril — 97%.

Metabolism/Excretion: Benazepril — Converted by the liver to benazeprilat, the active metabolite. 20% excreted by kidneys; 11–12% nonrenal (biliary elimination). Captopril — 50% metabolized by the liver to inactive compounds, 50% excreted unchanged by the kidneys. Enalapril, enalaprilat — Enalapril is converted by the liver to enalaprilat, the active metabolite; primarily eliminated by the kidneys. Fosinopril — Converted by the liver and GI mucosa to fosinoprilat, the active metabolite — 50% excreted in urine, 50% in feces. Lisinopril — 100% eliminated by the kidneys. Moexipril — Converted by liver and GI mucosa to moexiprilat, the active metabolite; 13% excreted in urine, 53% in feces. Perindopril — Converted by the liver to perindoprilat, the active metabolite; primarily excreted in urine. Quinapril — Converted by the liver, GI mucosa, and tissue to quinaprilat, the active metabolite: 96% eliminated by the kidneys. Ramipril — Converted by the liver to ramiprilat, the active metabolite; 60% excreted in urine, 40% in feces. Trandolapril — Converted by the liver to trandolaprilat, the active metabolite; 33% excreted in urine, 66% in feces.

Half-life: Benazeprilat — 10–11 hr. Captopril — 2 hr (↑ in renal impairment). Enalapril — 2 hr (↑ in renal impairment). Enalaprilat — 35–38 hr (↑ in renal impairment). Fosinoprilat — 12 hr. Lisinopril — 12 hr (↑ in renal impairment). Moexiprilat — 2–9 hr (↑ in renal impairment). Perindoprilat — 3–10 hr (↑ in renal impairment). Quinaprilat — 3 hr (↑ in renal impairment). Ramiprilat — 13–17 hr (↑ in renal impairment). Trandolaprilat — 22.5 hr (↑ in renal impairment).

Time/Action Profile ⬆ ⬇

(effect on BP — single dose†)

ROUTEONSETPEAKDURATION
Benazeprilwithin 1 hr2–4 hr24 hr
Captopril15–60 min60–90 min6–12 hr
Enalapril PO1 hr4–8 hr12–24 hr
Enalapril IV15 min1–4 hr4–6 hr
Fosinoprilwithin 1 hr2–6 hr24 hr
Lisinopril1 hr6 hr24 hr
Moexiprilwithin 1 hr3–6 hrup to 24 hr
Perindoprilatwithin 1–2 hr3–7 hrup to 24 hr
Quinaprilwithin 1 hr2–4 hrup to 24 hr
Ramiprilwithin 1–2 hr3–6 hr24 hr
Trandolaprilwithin 1–2 hr4–10 hrup to 24 hr

†Full effects may not be noted for several wks.

Contraind./Precautions ⬆ ⬇

Contraindicated in:

Use Cautiously in:

Exercise Extreme Caution in:

Adv. Reactions/Side Effects ⬆ ⬇

CV: hypotension, chest pain, edema, tachycardia.

Derm: flushing, pruritus, rashes.

Endo: hyperuricemia.

F and E: hyperkalemia.

GI: taste disturbances, abdominal pain, anorexia, constipation, diarrhea, nausea, vomiting.

GU: erectile dysfunction, proteinuria, renal dysfunction, renal failure.

Hemat: AGRANULOCYTOSIS, neutropenia (captopril only).

MS: back pain, muscle cramps, myalgia.

Neuro: dizziness, drowsiness, fatigue, headache, insomnia, vertigo, weakness.

Resp: cough, dyspnea.

Misc: ANGIOEDEMA, fever.

Interactions ⬆ ⬇

Drug-Drug:

Drug-Food:

Route/Dosage ⬆ ⬇

see Calculator

Benazepril

Renal Impairment

Renal Impairment

Captopril

Renal Impairment

Enalapril/Enalaprilat

Renal Impairment

Renal Impairment

Fosinopril

Lisinopril

Renal Impairment

Renal Impairment

Moexipril

Renal Impairment

Perindopril

Renal Impairment

Quinapril

Renal Impairment

Ramipril

Renal Impairment

Trandolapril

Renal Impairment

Hepatic Impairment

Availability ⬆ ⬇

Benazepril

(generic available)

Captopril

(generic available)

Enalapril

(generic available)

Enalaprilat

(generic available)

Fosinopril

(generic available)

Lisinopril

(generic available)

Moexipril

(generic available)

Perindopril

(generic available)

Quinapril

(generic available)

Ramipril

(generic available)

Trandolapril

(generic available)

Assessment ⬆ ⬇

  • Hypertension: Monitor BP and pulse frequently during initial dose adjustment and periodically during therapy. Notify health care professional of significant changes.
    • Monitor frequency of prescription refills to determine adherence.
    • Assess patient for signs of angioedema (swelling of face, extremities, eyes, lips, tongue, difficulty in swallowing or breathing); may occur at any time during therapy. Discontinue medication and provide supportive care.
  • HF: Monitor weight and assess patient routinely for resolution of fluid overload (peripheral edema, rales/crackles, dyspnea, weight gain, jugular venous distention).
Lab Test Considerations:
  • Monitor BUN, serum creatinine, and electrolyte levels periodically. Serum potassium, BUN and creatinine may be ↑, whereas sodium levels may be ↓. If ↑ BUN or serum creatinine concentrations occur, dose reduction or withdrawal may be required.
    • Monitor CBC periodically during therapy. Certain drugs may rarely cause slight ↓ in hemoglobin and hematocrit, leukopenia, and eosinophilia.
    • May cause ↑ AST, ALT, alkaline phosphatase, serum bilirubin, uric acid, and glucose.
    • Assess urine protein prior to and periodically during therapy for up to 1 yr in patients with renal impairment or those receiving >150 mg/day of captopril. If excessive or ↑ proteinuria occurs, re-evaluate ACE inhibitor therapy.
    • Captopril: May cause positive ANA titer.
    • Captopril: May cause false-positive test results for urine acetone.
    • Captopril: Monitor CBC with differential prior to initiation of therapy, every 2 wk for first 3 mo, and periodically for up to 1 yr in patients at risk for neutropenia (patients with renal impairment or collagen-vascular disease) or at first sign of infection. Discontinue therapy if neutrophil count is <1000/mm3.

Implementation ⬆ ⬇

  • Do not confuse Accupril with Aciphex. Do not confuse benazepril with Benadryl. Do not confuse captopril with carvedilol. Do not confuse Zestril with Zegerid, Zetia, or Zyprexa.
  • Correct volume depletion, if possible, before initiation of therapy.
  • PO: Precipitous drop in BP during first 1–3 hr after first dose may require volume expansion with normal saline but is not usually considered an indication for stopping therapy. Discontinuing diuretic therapy or cautiously increasing salt intake 2–3 days before initiation may ↓ risk of hypotension. Monitor closely for at least 1 hr after BP has stabilized. Resume diuretics if BP is not controlled.
  • Benazepril

  • PO: For patients with difficulty swallowing tablets, pharmacist may compound oral suspension; stable for 30 days if refrigerated. Shake suspension before each use.
  • Captopril

  • PO: Administer 1 hr before or 2 hr after meals. May be crushed if patient has difficulty swallowing. Tablets may have a sulfurous odor.
    • An oral solution may be prepared by crushing a 25-mg tablet and dissolving it in 25–100 mL of water. Shake for at least 5 min and administer within 30 min.
  • Enalapril

  • PO: For patients with difficulty swallowing tablets, oral solution is available ready to use. Shake solution before each use. Solution is stable at controlled room temperature for 60 days.
  • Enalaprilat

    IV Administration:

  • IV Push:
      Diluent: May be administered undiluted.Concentration: 1.25 mg/mL.
  • Rate: Administer over at least 5 min.
  • Intermittent Infusion:
      Diluent: Dilute in up to 50 mL of D5W, 0.9% NaCl, D5/0.9% NaCl, or D5/LR. Diluted solution is stable for 24 hr.
  • Rate: Administer as a slow infusion over at least 5 min.
  • Y-Site Compatibility:
    • acyclovir
    • alemtuzumab
    • alfentanil
    • allopurinol
    • amifostine
    • amikacin
    • aminocaproic acid
    • aminophylline
    • amiodarone
    • amphotericin B lipid complex
    • amphotericin B liposome
    • anidulafungin
    • argatroban
    • arsenic trioxide
    • ascorbic acid
    • atropine
    • azathioprine
    • azithromycin
    • aztreonam
    • benztropine
    • bivalirudin
    • bleomycin
    • bumetanide
    • buprenorphine
    • butorphanol
    • calcium chloride
    • calcium gluconate
    • cangrelor
    • carboplatin
    • carmustine
    • cefazolin
    • cefotaxime
    • cefotetan
    • cefoxitin
    • ceftaroline
    • ceftazidime
    • ceftriaxone
    • cefuroxime
    • chloramphenicol
    • chlorpromazine
    • cisatracurium
    • cisplatin
    • cladribine
    • clindamycin
    • cyanocobalamin
    • cyclophosphamide
    • cyclosporine
    • cytarabine
    • dacarbazine
    • dactinomycin
    • daptomycin
    • daunorubicin
    • dexamethasone
    • dexmedetomidine
    • dexrazoxane
    • digoxin
    • diltiazem
    • diphenhydramine
    • dobutamine
    • docetaxel
    • dopamine
    • doxorubicin
    • doxorubicin liposomal
    • doxycycline
    • ephedrine
    • epinephrine
    • epirubicin
    • epoetin alfa
    • eptifibatide
    • ertapenem
    • erythromycin
    • esmolol
    • etoposide
    • etoposide phosphate
    • famotidine
    • fenoldopam
    • fentanyl
    • filgrastim
    • fluconazole
    • fludarabine
    • fluorouracil
    • folic acid
    • foscarnet
    • fosphenytoin
    • furosemide
    • gallium nitrate
    • ganciclovir
    • gemcitabine
    • gentamicin
    • glycopyrrolate
    • granisetron
    • heparin
    • hetastarch
    • hydrocortisone
    • hydromorphone
    • idarubicin
    • ifosfamide
    • imipenem/cilastatin
    • indomethacin
    • insulin, regular
    • irinotecan
    • isoproterenol
    • ketorolac
    • labetalol
    • lactated Ringer's
    • leucovorin calcium
    • levofloxacin
    • lidocaine
    • linezolid
    • lorazepam
    • magnesium sulfate
    • mannitol
    • melphalan
    • meperidine
    • meropenem
    • mesna
    • methadone
    • methotrexate
    • methylprednisolone
    • metoclopramide
    • metoprolol
    • metronidazole
    • midazolam
    • milrinone
    • mitomycin
    • mitoxantrone
    • morphine
    • moxifloxacin
    • multivitamins
    • mycophenolate
    • nafcillin
    • nalbuphine
    • naloxone
    • nicardipine
    • nitroglycerin
    • nitroprusside
    • norepinephrine
    • octreotide
    • ondansetron
    • oxacillin
    • oxaliplatin
    • oxytocin
    • paclitaxel
    • palonosetron
    • pamidronate
    • pancuronium
    • papaverine
    • pemetrexed
    • penicillin G
    • pentamidine
    • pentobarbital
    • phenobarbital
    • phentolamine
    • phenylephrine
    • phytonadione
    • piperacillin/tazobactam
    • potassium acetate
    • potassium chloride
    • potassium phosphate
    • procainamide
    • prochlorperazine
    • promethazine
    • propofol
    • propranolol
    • protamine
    • pyridoxine
    • remifentanil
    • rituximab
    • rocuronium
    • sodium acetate
    • sodium bicarbonate
    • succinylcholine
    • sufentanil
    • tacrolimus
    • tetracycline
    • theophylline
    • thiamine
    • thiotepa
    • tigecycline
    • tirofiban
    • tobramycin
    • topotecan
    • trastuzumab
    • vancomycin
    • vasopressin
    • vecuronium
    • verapamil
    • vinblastine
    • vincristine
    • vinorelbine
    • voriconazole
    • zoledronic acid
  • Y-Site Incompatibility:
    • amphotericin B deoxycholate
    • caspofungin
    • cefepime
    • dantrolene
    • diazepam
    • diazoxide
    • gemtuzumab ozogamicin
    • phenytoin
  • .

    Lisinopril

  • PO: Oral solution is clear to slightly opalescent. Administer without dilution.
  • Moexipril

  • PO: Administer moexipril on an empty stomach, 1 hr before a meal.
  • Ramipril

  • PO: Capsules may be opened and sprinkled on applesauce, or dissolved in 4 oz water or apple juice for patients with difficulty swallowing. Effectiveness is same as capsule. Prepared mixtures can be stored for up to 24 hr at room temperature or up to 48 hr if refrigerated.
  • Trandolapril

  • PO: May be taken with or without food.

Patient/Family Teaching ⬆ ⬇

  • Instruct patient to take medication as directed at the same time each day, even if feeling well. Take missed doses as soon as possible but not if almost time for next dose. Do not double doses. Warn patient not to discontinue ACE inhibitor therapy unless directed by health care professional.
    • Caution patient to avoid salt substitutes or foods containing high levels of potassium or sodium unless directed by health care professional (see Appendix M).
    • Caution patient to change positions slowly to minimize hypotension. Use of alcohol, standing for long periods, exercising, and hot weather may ↑ orthostatic hypotension.
    • Instruct patient to notify health care professional of all Rx or OTC medications, vitamins, or herbal products being taken and consult health care professional before taking any new medications, especially cough, cold, or allergy remedies.
    • May cause dizziness. Caution patient to avoid driving and other activities requiring alertness until response to medication is known.
    • Advise patient to inform health care professional of medication regimen prior to treatment or surgery.
    • Advise patient that medication may cause impairment of taste that generally resolves within 8–12 wk, even with continued therapy.
    • Instruct patient to notify health care professional immediately if rash; mouth sores; sore throat; fever; swelling of hands or feet; irregular heart beat; chest pain; dry cough; hoarseness; swelling of face, eyes, lips, or tongue; difficulty swallowing or breathing occur; or if taste impairment or skin rash persists. Persistent dry cough may occur and may not subside until medication is discontinued. Consult health care professional if cough becomes bothersome. Also notify health care professional if nausea, vomiting, or diarrhea occurs and continues.
    • Advise diabetic patients to monitor blood glucose closely, especially during first mo of therapy; may cause hypoglycemia.
    • Rep: May cause fetal harm. Advise females of reproductive potential to use effective contraception during therapy and notify health care professional if pregnancy is planned or suspected. If pregnancy is detected, discontinue medication as soon as possible. Closely observe infants with histories of in utero exposure to ACE inhibitors for hypotension, oliguria, and hyperkalemia. If oliguria or hypotension occur, support blood pressure and renal perfusion. Exchange transfusions or dialysis may be required as a means of reversing hypotension and substituting for disordered renal function. Advise patient to avoid breast feeding during therapy.
    • Emphasize the importance of follow-up examinations to monitor progress.
  • Hypertension: Encourage patient to comply with additional interventions for hypertension (weight reduction, low sodium diet, discontinuation of smoking, moderation of alcohol consumption, regular exercise, and stress management). Medication controls but does not cure hypertension.
    • Instruct patient and family on correct technique for monitoring BP. Advise them to check BP at least weekly and to report significant changes to health care professional.

Evaluation/Desired Outcomes ⬆ ⬇

  • Decrease in BP without appearance of excessive side effects.
  • Decrease in signs and symptoms of HF (some drugs may also improve survival).
  • Decrease in development of overt HF (enalapril).
  • Reduction of risk of death or development of HF following MI.
  • Reduction of risk of death from cardiovascular causes and MI in patients with stable CAD (perindopril).
  • Reduction of risk of MI, stroke, or death from cardiovascular causes in patients at high-risk for these events (ramipril).
  • Decrease in progression of diabetic nephropathy (captopril).

US Brand Names ⬆ ⬇

benazepril: Lotensin

captopril: Capoten

Enalapril/Enalaprilat: Epaned, Vasotec

fosinopril: Monopril

lisinopril: Prinivil

, Qbrelis, Zestril

moexipril: Univasc

perindopril: Aceon

quinapril: Accupril

ramipril: Altace

Canadian Brand Names ⬆

Enalapril/Enalaprilat: Vasotec IV

perindopril: Coversyl

trandolapril: Mavik