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Side Effects & Adverse Reactions
Presumably because angiotensin-converting inhibitors affect the metabolism of eicosanoids and polypeptides, including endogenous bradykinin, patients receiving ACE inhibitors (including quinapril hydrochloride) may be subject to a variety of adverse reactions, some of them serious.
Angioedema of the face, extremities, lips, tongue, glottis, and larynx has been reported in patients treated with ACE inhibitors and has been seen in 0.1% of patients receiving quinapril hydrochloride.
In two similarly sized U.S. postmarketing trials that, combined, enrolled over 3,000 black patients and over 19,000 non-blacks, angioedema was reported in 0.30% and 0.55% of blacks (in study 1 and 2 respectively) and 0.39% and 0.17% of non-blacks.
Angioedema associated with laryngeal edema can be fatal. If laryngeal stridor or angioedema of the face, tongue, or glottis occurs, treatment with quinapril hydrochloride should be discontinued immediately, the patient treated in accordance with accepted medical care, and carefully observed until the swelling disappears. In instances where swelling is confined to the face and lips, the condition generally resolves without treatment; antihistamines may be useful in relieving symptoms. Where there is involvement of the tongue, glottis, or larynx likely to cause airway obstruction, emergency therapy including, but not limited to, subcutaneous epinephrine solution 1:1000 (0.3 to 0.5 mL) should be promptly administered (see ADVERSE REACTIONS).
Intestinal angioedema has been reported in patients treated with ACE inhibitors. These patients presented with abdominal pain (with or without nausea or vomiting); in some cases there was no prior history of facial angioedema and C-1 esterase levels were normal. The angioedema was diagnosed by procedures including abdominal CT scan or ultrasound, or at surgery, and symptoms resolved after stopping the ACE inhibitor. Intestinal angioedema should be included in the differential diagnosis of patients on ACE inhibitors presenting with abdominal pain.
Patients with a history of angioedema unrelated to ACE inhibitor therapy may be at increased risk of angioedema while receiving an ACE inhibitor (see also CONTRAINDICATIONS).
Two patients undergoing desensitizing treatment with hymenoptera venom while receiving ACE inhibitors sustained life-threatening anaphylactoid reactions. In the same patients, these reactions were avoided when ACE inhibitors were temporarily withheld, but they reappeared upon inadvertent rechallenge.
Anaphylactoid reactions have been reported in patients dialyzed with high-flux membranes and treated concomitantly with an ACE inhibitor.
Anaphylactoid reactions have also been reported in patients undergoing low-density lipoprotein apheresis with dextran sulfate absorption.
Rarely, ACE inhibitors have been associated with a syndrome that starts with cholestatic jaundice and progresses to fulminant hepatic necrosis and (sometimes) death. The mechanism of this syndrome is not understood. Patients receiving ACE inhibitors who develop jaundice or marked elevations of hepatic enzymes should discontinue the ACE inhibitor and receive appropriate medical follow-up.
Excessive hypotension is rare in patients with uncomplicated hypertension treated with quinapril hydrochloride alone. Patients with heart failure given quinapril hydrochloride commonly have some reduction in blood pressure, but discontinuation of therapy because of continuing symptomatic hypotension usually is not necessary when dosing instructions are followed. Caution should be observed when initiating therapy in patients with heart failure. In controlled studies, syncope was observed in 0.4% of patients (N=3203); this incidence was similar to that observed for captopril (1%) and enalapril (0.8%).
Patients at risk of excessive hypotension, sometimes associated with oliguria and/or progressive azotemia, and rarely with acute renal failure and/or death, include patients with the following conditions or characteristics: heart failure, hyponatremia, high dose diuretic therapy, recent intensive diuresis or increase in diuretic dose, renal dialysis, or severe volume and/or salt depletion of any etiology. It may be advisable to eliminate the diuretic (except in patients with heart failure), reduce the diuretic dose or cautiously increase salt intake (except in patients with heart failure) before initiating therapy with quinapril hydrochloride in patients at risk for excessive hypotension who are able to tolerate such adjustments.
In patients at risk of excessive hypotension, therapy with quinapril hydrochloride should be started under close medical supervision. Such patients should be followed closely for the first two weeks of treatment and whenever the dose of quinapril hydrochloride and/or diuretic is increased. Similar considerations may apply to patients with ischemic heart or cerebrovascular disease in whom an excessive fall in blood pressure could result in a myocardial infarction or a cerebrovascular accident.
If excessive hypotension occurs, the patient should be placed in the supine position and, if necessary, receive an intravenous infusion of normal saline. A transient hypotensive response is not a contraindication to further doses of quinapril hydrochloride, which usually can be given without difficulty once the blood pressure has stabilized. If symptomatic hypotension develops, a dose reduction or discontinuation of quinapril hydrochloride or concomitant diuretic may be necessary.
Another ACE inhibitor, captopril, has been shown to cause agranulocytosis and bone marrow depression rarely in patients with uncomplicated hypertension, but more frequently in patients with renal impairment, especially if they also have a collagen vascular disease, such as systemic lupus erythematosus or scleroderma. Agranulocytosis did occur during quinapril hydrochloride treatment in one patient with a history of neutropenia during previous captopril therapy. Available data from clinical trials of quinapril hydrochloride are insufficient to show that, in patients without prior reactions to other ACE inhibitors, quinapril hydrochloride does not cause agranulocytosis at similar rates. As with other ACE inhibitors, periodic monitoring of white blood cell counts in patients with collagen vascular disease and/or renal disease should be considered.
ACE inhibitors can cause fetal and neonatal morbidity and death when administered to pregnant women. Several dozen cases have been reported in the world literature. When pregnancy is detected, ACE inhibitors should be discontinued as soon as possible.
The use of ACE inhibitors during the second and third trimesters of pregnancy has been associated with fetal and neonatal injury, including hypotension, neonatal skull hypoplasia, anuria, reversible or irreversible renal failure, and death. Oligohydramnios has also been reported, presumably resulting from decreased fetal renal function; oligohydramnios in this setting has been associated with fetal limb contractures, craniofacial deformation, and hypoplastic lung development. Prematurity, intrauterine growth retardation, and patent ductus arteriosus have also been reported, although it is not clear whether these occurrences were due to the ACE inhibitor exposure.
These adverse effects do not appear to have resulted from intrauterine ACE inhibitor exposure that has been limited to the first trimester. Mothers whose embryos and fetuses are exposed to ACE inhibitors only during the first trimester should be so informed. Nonetheless, when patients become pregnant, physicians should make every effort to discontinue the use of quinapril hydrochloride as soon as possible.
Rarely (probably less often than once in every thousand pregnancies), no alternative to ACE inhibitors will be found. In these rare cases, the mother should be apprised of the potential hazards to their fetuses, and serial ultrasound examinations should be performed to assess the intraamniotic environment.
If oligohydramnios is observed, quinapril hydrochloride should be discontinued unless it is considered life-saving for the mother. Contraction stress testing (CST), a non-stress test (NST), or biophysical profiling (BPP) may be appropriate, depending upon the week of pregnancy.
Patients and physicians should be aware, however, that oligohydramnios may not appear until after the fetus has sustained irreversible injury.
Infants with histories of in utero exposure to ACE inhibitors should be closely observed for hypotension, oliguria, and hyperkalemia. If oliguria occurs, attention should be directed toward support of blood pressure and renal perfusion. Exchange transfusion or dialysis may be required as a means of reversing hypotension and/or substituting for disordered renal function. Removal of quinapril hydrochloride, which crosses the placenta, from the neonatal circulation is not significantly accelerated by these means.
No teratogenic effects of quinapril hydrochloride were seen in studies of pregnant rats and rabbits. On a mg/kg basis, the doses used were up to 180 times (in rats) and one time (in rabbits) the maximum recommended human dose.
Legal Issues
There is currently no legal information available for this drug.
FDA Safety Alerts
There are currently no FDA safety alerts available for this drug.
Manufacturer Warnings
There is currently no manufacturer warning information available for this drug.
FDA Labeling Changes
There are currently no FDA labeling changes available for this drug.
Uses
Quinapril tablets are indicated for the treatment of hypertension. It may be used alone or in combination with thiazide diuretics.
In using quinapril tablets, consideration should be given to the fact that another angiotensin-converting enzyme inhibitor, captopril, has caused agranulocytosis, particularly in patients with renal impairment or collagen vascular disease. Available data are insufficient to show that quinapril tablets do not have a similar risk (see WARNINGS).
Black patients receiving ACE inhibitor monotherapy have been reported to have a higher incidence of angioedema compared to non-blacks. It should also be noted that in controlled clinical trials ACE inhibitors have an effect on blood pressure that is less in black patients than in non-blacks.
History
There is currently no drug history available for this drug.
Other Information
Quinapril hydrochloride, USP is the hydrochloride salt of quinapril, the ethyl ester of a non-sulfhydryl, angiotensin-converting enzyme (ACE) inhibitor, quinaprilat.
Quinapril hydrochloride is chemically described as [3S-[2[R*(R*)], 3R*]]-2-[2-[[1-(ethoxycarbonyl)-3-phenylpropyl]amino]-1-oxopropyl]-1,2,3,4-tetrahydro-3-isoquinolinecarboxylic acid, monohydrochloride. Its empirical formula is C25H30N2O5 •HCl and its structural formula is:
M.W. = 474.98
Quinapril hydrochloride is a white to off-white amorphous powder that is freely soluble in aqueous solvents.
Quinapril hydrochloride tablets contain 5 mg, 10 mg, 20 mg, or 40 mg of quinapril for oral administration. Each tablet also contains crospovidone, hypromellose, iron oxide black, iron oxide yellow, lactose monohydrate, magnesium oxide, magnesium stearate, microcrystalline cellulose, polyethylene glycol 400, polysorbate 80 and titanium dioxide.
Sources
Quinapril Hydrochloride Manufacturers
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Genpharm Ulc
Quinapril Hydrochloride | Genpharm Ulc
Hypertension Monotherapy:The recommended initial dosage of quinapril tablets in patients not on diuretics is 10 or 20 mg once daily. Dosage should be adjusted according to blood pressure response measured at peak (2-6 hours after dosing) and trough (predosing). Generally, dosage adjustments should be made at intervals of at least 2 weeks. Most patients have required dosages of 20, 40, or 80 mg/day, given as a single dose or in two equally divided doses. In some patients treated once daily, the antihypertensive effect may diminish toward the end of the dosing interval. In such patients an increase in dosage or twice daily administration may be warranted. In general, doses of 40 to 80 mg and divided doses give a somewhat greater effect at the end of the dosing interval.
Concomitant Diuretics:If blood pressure is not adequately controlled with quinapril tablets monotherapy, a diuretic may be added. In patients who are currently being treated with a diuretic, symptomatic hypotension occasionally can occur following the initial dose of quinapril tablets. To reduce the likelihood of hypotension, the diuretic should, if possible, be discontinued 2 to 3 days prior to beginning therapy with quinapril tablets (see WARNINGS). Then, if blood pressure is not controlled with quinapril tablets alone, diuretic therapy should be resumed.
If the diuretic cannot be discontinued, an initial dose of 5 mg quinapril tablets should be used with careful medical supervision for several hours and until blood pressure has stabilized.
The dosage should subsequently be titrated (as described above) to the optimal response (see WARNINGS, PRECAUTIONS, and Drug Interactions).
Renal Impairment:Kinetic data indicate that the apparent elimination half-life of quinaprilat increases as creatinine clearance decreases. Recommended starting doses, based on clinical and pharmacokinetic data from patients with renal impairment, are as follows:
Creatinine Clearance Maximum Recommended Initial Dose >60 mL/min 10 mg 30-60 mL/min 5 mg 10-30 mL/min 2.5 mg <10 mL/min Insufficient data for dosage recommendationPatients should subsequently have their dosage titrated (as described above) to the optimal response.
Elderly (≥ 65 years):The recommended initial dose of quinapril tablets in elderly patients is 10 mg given once daily followed by titration (as described above) to the optimal response.
Following the initial dose of quinapril tablets, the patient should be observed under medical supervision for at least two hours for the presence of hypotension or orthostatis and, if present, until blood pressure stabilizes. The appearance of hypotension, orthostatis, or azotemia early in dose titration should not preclude further careful dose titration. Consideration should be given to reducing the dose of concomitant diuretics.
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Pd-rx Pharmaceuticals, Inc.
Quinapril Hydrochloride | Pd-rx Pharmaceuticals, Inc.
Hypertension MonotherapyThe recommended initial dosage of quinapril hydrochloride tablets in patients not on diuretics is 10 or 20 mg once daily. Dosage should be adjusted according to blood pressure response measured at peak (2–6 hours after dosing) and trough (predosing). Generally, dosage adjustments should be made at intervals of at least 2 weeks. Most patients have required dosages of 20, 40, or 80 mg/day, given as a single dose or in two equally divided doses. In some patients treated once daily, the antihypertensive effect may diminish toward the end of the dosing interval. In such patients an increase in dosage or twice daily administration may be warranted. In general, doses of 40–80 mg and divided doses give a somewhat greater effect at the end of the dosing interval.
Concomitant DiureticsIf blood pressure is not adequately controlled with quinapril hydrochloride monotherapy, a diuretic may be added. In patients who are currently being treated with a diuretic, symptomatic hypotension occasionally can occur following the initial dose of quinapril hydrochloride tablets. To reduce the likelihood of hypotension, the diuretic should, if possible, be discontinued 2 to 3 days prior to beginning therapy with quinapril hydrochloride tablets (see WARNINGS). Then, if blood pressure is not controlled with quinapril hydrochloride tablets alone, diuretic therapy should be resumed.
If the diuretic cannot be discontinued, an initial dose of 5 mg quinapril hydrochloride should be used with careful medical supervision for several hours and until blood pressure has stabilized.
The dosage should subsequently be titrated (as described above) to the optimal response (see WARNINGS, PRECAUTIONS, and Drug Interactions).
Renal ImpairmentKinetic data indicate that the apparent elimination half-life of quinaprilat increases as creatinine clearance decreases. Recommended starting doses, based on clinical and pharmacokinetic data from patients with renal impairment, are as follows:
Creatinine
Clearance Maximum Recommended
Initial Dose >60 mL/min 10 mg 30–60 mL/min 5 mg 10–30 mL/min 2.5 mg <10 mL/min Insufficient data for dosage recommendationPatients should subsequently have their dosage titrated (as described above) to the optimal response.
Elderly (≥65 years)The recommended initial dosage of quinapril hydrochloride tablets in elderly patients is 10 mg given once daily followed by titration (as described above) to the optimal response.
Heart FailureQuinapril hydrochloride tablets are indicated as adjunctive therapy when added to conventional therapy including diuretics and/or digitalis. The recommended starting dose is 5 mg twice daily. This dose may improve symptoms of heart failure, but increases in exercise duration have generally required higher doses. Therefore, if the initial dosage of quinapril hydrochloride tablets is well tolerated, patients should then be titrated at weekly intervals until an effective dose, usually 20 to 40 mg daily given in two equally divided doses, is reached or undesirable hypotension, orthostatis, or azotemia (see WARNINGS) prohibit reaching this dose.
Following the initial dose of quinapril hydrochloride tablets, the patient should be observed under medical supervision for at least two hours for the presence of hypotension or orthostatis and, if present, until blood pressure stabilizes. The appearance of hypotension, orthostatis, or azotemia early in dose titration should not preclude further careful dose titration. Consideration should be given to reducing the dose of concomitant diuretics.
DOSE ADJUSTMENTS IN PATIENTS WITH HEART FAILURE AND RENAL IMPAIRMENT OR HYPONATREMIAPharmacokinetic data indicate that quinapril elimination is dependent on level of renal function. In patients with heart failure and renal impairment, the recommended initial dose of quinapril hydrochloride tablets is 5 mg in patients with a creatinine clearance above 30 mL/min and 2.5 mg in patients with a creatinine clearance of 10 to 30 mL/min. There is insufficient data for dosage recommendation in patients with a creatinine clearance less than 10 mL/min (see DOSAGE AND ADMINISTRATION, Heart Failure, WARNINGS, and PRECAUTIONS, Drug Interactions).
If the initial dose is well tolerated, quinapril hydrochloride tablets may be administered the following day as a twice daily regimen. In the absence of excessive hypotension or significant deterioration of renal function, the dose may be increased at weekly intervals based on clinical and hemodynamic response.
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Greenstone Llc
Quinapril Hydrochloride | Sagent Pharmaceuticals
If diarrhea occurs during therapy, this antibiotic should be discontinued (see WARNING box).
Clindamycin injection IV administration should be diluted. (See Dilution for IV use and IV Infusion Rates below.)
Adults: Parenteral IV Administration: Serious infections due to aerobic gram-positive cocci and the more susceptible anaerobes (NOT generally including Bacteroides fragilis, Peptococcus species and Clostridium species other than Clostridium perfringens):
600 mg to 1200 mg/day in 2, 3 or 4 equal doses.More severe infections, particularly those due to proven or suspected Bacteroides fragilis, Peptococcus species, or Clostridium species other than Clostridium perfringens:
1200 mg to 2700 mg/day in 2, 3 or 4 equal doses.For more serious infections, these doses may have to be increased. In life-threatening situations due to either aerobes or anaerobes these doses may be increased. Doses of as much as 4800 mg daily have been given intravenously to adults. See Dilution for IV use and IV Infusion Rates section below.
Alternatively, drug may be administered in the form of a single rapid infusion of the first dose followed by continuous IV infusion as follows:
To maintain serum
clindamycin levels Rapid infusion rate Maintenance
infusion rate Above 4 mcg/mL
Above 5 mcg/mL
Above 6 mcg/mL 10 mg/min for 30 min
15 mg/min for 30 min
20 mg/min for 30 min 0.75 mg/min
1 mg/min
1.25 mg/minNeonates (less than 1 month): 15 to 20 mg/kg/day in 3 to 4 equal doses. The lower dosage may be adequate for small prematures.
Pediatric patients 1 month of age to 16 years: Parenteral IV Administration: 20 to 40 mg/kg/day in 3 or 4 equal doses. The higher doses would be used for more severe infections. As an alternative to dosing on a body weight basis, pediatric patients may be dosed on the basis of square meters body surface: 350 mg/m2/day for serious infections and 450 mg/m2/day for more severe infections.
Parenteral therapy may be changed to oral clindamycin flavored granules (clindamycin palmitate hydrochloride) or clindamycin capsules (clindamycin hydrochloride) when the condition warrants and at the discretion of the physician.
In cases of β-hemolytic streptococcal infections, treatment should be continued for at least 10 days.
Dilution for IV use and IV Infusion Rates: The concentration of clindamycin in diluent for infusion should not exceed 18 mg per mL. Infusion rates should not exceed 30 mg per minute. The usual infusion dilutions and rates are as follows:
Dose Diluent Time 300 mg
600 mg
900 mg
1200 mg 50 mL
50 mL
50 to 100 mL
100 mL 10 min
20 min
30 min
40 minAdministration of more than 1200 mg in a single 1-hour infusion is not recommended.
Parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration, whenever solution and container permit.
Dilution and Compatibility: Physical and biological compatibility studies monitored for 24 hours at room temperature have demonstrated no inactivation or incompatibility with the use of clindamycin injection (clindamycin phosphate) in IV solutions containing sodium chloride, glucose, calcium or potassium, and solutions containing vitamin B complex in concentrations usually used clinically. No incompatibility has been demonstrated with the antibiotics cephalothin, kanamycin, gentamicin, penicillin or carbenicillin.
The following drugs are physically incompatible with clindamycin phosphate: ampicillin sodium, phenytoin sodium, barbiturates, aminophylline, calcium gluconate, and magnesium sulfate.
The compatibility and duration of stability of drug admixtures will vary depending on concentration and other conditions. For current information regarding compatibilities of clindamycin phosphate under specific conditions, please contact the medical affairs department toll-free at 1-866-625-1618.
Physico-Chemical Stability of diluted solutions of Clindamycin InjectionRoom temperature: 6, 9 and 12 mg/mL (equivalent to clindamycin base) in dextrose injection 5%, sodium chloride injection 0.9%, or Lactated Ringers Injection in glass bottles or minibags, demonstrated physical and chemical stability for at least 16 days at 25°C. Also, 18 mg/mL (equivalent to clindamycin base) in dextrose injection 5%, in minibags, demonstrated physical and chemical stability for at least 16 days at 25°C.
Refrigeration: 6, 9 and 12 mg/mL (equivalent to clindamycin base) in dextrose injection 5%, sodium chloride injection 0.9%, or Lactated Ringers Injection in glass bottles or minibags, demonstrated physical and chemical stability for at least 32 days at 4°C.
IMPORTANT: This chemical stability information in no way indicates that it would be acceptable practice to use this product well after the preparation time. Good professional practice suggests that compounded admixtures should be administered as soon after preparation as is feasible.
Frozen: 6, 9 and 12 mg/mL (equivalent to clindamycin base) in dextrose injection 5%, sodium chloride injection 0.9%, or Lactated Ringers Injection in minibags demonstrated physical and chemical stability for at least eight weeks at -10°C.
Frozen solutions should be thawed at room temperature and not refrozen.
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Carilion Materials Management
Quinapril Hydrochloride | Carilion Materials Management
Hypertension MonotherapyThe recommended initial dosage of quinapril hydrochloride tablets in patients not on diuretics is 10 or 20 mg once daily. Dosage should be adjusted according to blood pressure response measured at peak (2–6 hours after dosing) and trough (predosing). Generally, dosage adjustments should be made at intervals of at least 2 weeks. Most patients have required dosages of 20, 40, or 80 mg/day, given as a single dose or in two equally divided doses. In some patients treated once daily, the antihypertensive effect may diminish toward the end of the dosing interval. In such patients an increase in dosage or twice daily administration may be warranted. In general, doses of 40–80 mg and divided doses give a somewhat greater effect at the end of the dosing interval.
Concomitant DiureticsIf blood pressure is not adequately controlled with quinapril hydrochloride monotherapy, a diuretic may be added. In patients who are currently being treated with a diuretic, symptomatic hypotension occasionally can occur following the initial dose of quinapril hydrochloride tablets. To reduce the likelihood of hypotension, the diuretic should, if possible, be discontinued 2 to 3 days prior to beginning therapy with quinapril hydrochloride tablets (see ). Then, if blood pressure is not controlled with quinapril hydrochloride tablets alone, diuretic therapy should be resumed. WARNINGS
If the diuretic cannot be discontinued, an initial dose of 5 mg quinapril hydrochloride should be used with careful medical supervision for several hours and until blood pressure has stabilized.
The dosage should subsequently be titrated (as described above) to the optimal response (see , , and ). WARNINGSPRECAUTIONSDrug Interactions
Renal ImpairmentKinetic data indicate that the apparent elimination half-life of quinaprilat increases as creatinine clearance decreases. Recommended starting doses, based on clinical and pharmacokinetic data from patients with renal impairment, are as follows:
Creatinine Clearance
Maximum Recommended Initial Dose
>60 mL/min 10 mg 30–60 mL/min 5 mg 10–30 mL/min 2.5 mg <10 mL/min Insufficient data for dosage recommendationPatients should subsequently have their dosage titrated (as described above) to the optimal response.
Elderly (≥65 years)The recommended initial dosage of quinapril hydrochloride tablets in elderly patients is 10 mg given once daily followed by titration (as described above) to the optimal response.
Heart FailureQuinapril hydrochloride tablets are indicated as adjunctive therapy when added to conventional therapy including diuretics and/or digitalis. The recommended starting dose is 5 mg twice daily. This dose may improve symptoms of heart failure, but increases in exercise duration have generally required higher doses. Therefore, if the initial dosage of quinapril hydrochloride tablets is well tolerated, patients should then be titrated at weekly intervals until an effective dose, usually 20 to 40 mg daily given in two equally divided doses, is reached or undesirable hypotension, orthostatis, or azotemia (see ) prohibit reaching this dose. WARNINGS
Following the initial dose of quinapril hydrochloride tablets, the patient should be observed under medical supervision for at least two hours for the presence of hypotension or orthostatis and, if present, until blood pressure stabilizes. The appearance of hypotension, orthostatis, or azotemia early in dose titration should not preclude further careful dose titration. Consideration should be given to reducing the dose of concomitant diuretics.
DOSE ADJUSTMENTS IN PATIENTS WITH HEART FAILURE AND RENAL IMPAIRMENT OR HYPONATREMIAPharmacokinetic data indicate that quinapril elimination is dependent on level of renal function. In patients with heart failure and renal impairment, the recommended initial dose of quinapril hydrochloride tablets is 5 mg in patients with a creatinine clearance above 30 mL/min and 2.5 mg in patients with a creatinine clearance of 10 to 30 mL/min. There is insufficient data for dosage recommendation in patients with a creatinine clearance less than 10 mL/min (see , , and ). DOSAGE AND ADMINISTRATION, Heart FailureWARNINGSPRECAUTIONS, Drug Interactions
If the initial dose is well tolerated, quinapril hydrochloride tablets may be administered the following day as a twice daily regimen. In the absence of excessive hypotension or significant deterioration of renal function, the dose may be increased at weekly intervals based on clinical and hemodynamic response.
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Carilion Materials Management
Quinapril Hydrochloride | Carilion Materials Management
Hypertension MonotherapyThe recommended initial dosage of quinapril hydrochloride tablets in patients not on diuretics is 10 or 20 mg once daily. Dosage should be adjusted according to blood pressure response measured at peak (2–6 hours after dosing) and trough (predosing). Generally, dosage adjustments should be made at intervals of at least 2 weeks. Most patients have required dosages of 20, 40, or 80 mg/day, given as a single dose or in two equally divided doses. In some patients treated once daily, the antihypertensive effect may diminish toward the end of the dosing interval. In such patients an increase in dosage or twice daily administration may be warranted. In general, doses of 40–80 mg and divided doses give a somewhat greater effect at the end of the dosing interval.
Concomitant DiureticsIf blood pressure is not adequately controlled with quinapril hydrochloride monotherapy, a diuretic may be added. In patients who are currently being treated with a diuretic, symptomatic hypotension occasionally can occur following the initial dose of quinapril hydrochloride tablets. To reduce the likelihood of hypotension, the diuretic should, if possible, be discontinued 2 to 3 days prior to beginning therapy with quinapril hydrochloride tablets (see ). Then, if blood pressure is not controlled with quinapril hydrochloride tablets alone, diuretic therapy should be resumed. WARNINGS
If the diuretic cannot be discontinued, an initial dose of 5 mg quinapril hydrochloride should be used with careful medical supervision for several hours and until blood pressure has stabilized.
The dosage should subsequently be titrated (as described above) to the optimal response (see , , and ). WARNINGSPRECAUTIONSDrug Interactions
Renal ImpairmentKinetic data indicate that the apparent elimination half-life of quinaprilat increases as creatinine clearance decreases. Recommended starting doses, based on clinical and pharmacokinetic data from patients with renal impairment, are as follows:
Creatinine Clearance
Maximum Recommended Initial Dose
>60 mL/min 10 mg 30–60 mL/min 5 mg 10–30 mL/min 2.5 mg <10 mL/min Insufficient data for dosage recommendationPatients should subsequently have their dosage titrated (as described above) to the optimal response.
Elderly (≥65 years)The recommended initial dosage of quinapril hydrochloride tablets in elderly patients is 10 mg given once daily followed by titration (as described above) to the optimal response.
Heart FailureQuinapril hydrochloride tablets are indicated as adjunctive therapy when added to conventional therapy including diuretics and/or digitalis. The recommended starting dose is 5 mg twice daily. This dose may improve symptoms of heart failure, but increases in exercise duration have generally required higher doses. Therefore, if the initial dosage of quinapril hydrochloride tablets is well tolerated, patients should then be titrated at weekly intervals until an effective dose, usually 20 to 40 mg daily given in two equally divided doses, is reached or undesirable hypotension, orthostatis, or azotemia (see ) prohibit reaching this dose. WARNINGS
Following the initial dose of quinapril hydrochloride tablets, the patient should be observed under medical supervision for at least two hours for the presence of hypotension or orthostatis and, if present, until blood pressure stabilizes. The appearance of hypotension, orthostatis, or azotemia early in dose titration should not preclude further careful dose titration. Consideration should be given to reducing the dose of concomitant diuretics.
DOSE ADJUSTMENTS IN PATIENTS WITH HEART FAILURE AND RENAL IMPAIRMENT OR HYPONATREMIAPharmacokinetic data indicate that quinapril elimination is dependent on level of renal function. In patients with heart failure and renal impairment, the recommended initial dose of quinapril hydrochloride tablets is 5 mg in patients with a creatinine clearance above 30 mL/min and 2.5 mg in patients with a creatinine clearance of 10 to 30 mL/min. There is insufficient data for dosage recommendation in patients with a creatinine clearance less than 10 mL/min (see , , and ). DOSAGE AND ADMINISTRATION, Heart FailureWARNINGSPRECAUTIONS, Drug Interactions
If the initial dose is well tolerated, quinapril hydrochloride tablets may be administered the following day as a twice daily regimen. In the absence of excessive hypotension or significant deterioration of renal function, the dose may be increased at weekly intervals based on clinical and hemodynamic response.
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Carilion Materials Management
Quinapril Hydrochloride | Carilion Materials Management
Hypertension MonotherapyThe recommended initial dosage of quinapril hydrochloride tablets in patients not on diuretics is 10 or 20 mg once daily. Dosage should be adjusted according to blood pressure response measured at peak (2–6 hours after dosing) and trough (predosing). Generally, dosage adjustments should be made at intervals of at least 2 weeks. Most patients have required dosages of 20, 40, or 80 mg/day, given as a single dose or in two equally divided doses. In some patients treated once daily, the antihypertensive effect may diminish toward the end of the dosing interval. In such patients an increase in dosage or twice daily administration may be warranted. In general, doses of 40–80 mg and divided doses give a somewhat greater effect at the end of the dosing interval.
Concomitant DiureticsIf blood pressure is not adequately controlled with quinapril hydrochloride monotherapy, a diuretic may be added. In patients who are currently being treated with a diuretic, symptomatic hypotension occasionally can occur following the initial dose of quinapril hydrochloride tablets. To reduce the likelihood of hypotension, the diuretic should, if possible, be discontinued 2 to 3 days prior to beginning therapy with quinapril hydrochloride tablets (see ). Then, if blood pressure is not controlled with quinapril hydrochloride tablets alone, diuretic therapy should be resumed. WARNINGS
If the diuretic cannot be discontinued, an initial dose of 5 mg quinapril hydrochloride should be used with careful medical supervision for several hours and until blood pressure has stabilized.
The dosage should subsequently be titrated (as described above) to the optimal response (see , , and ). WARNINGSPRECAUTIONSDrug Interactions
Renal ImpairmentKinetic data indicate that the apparent elimination half-life of quinaprilat increases as creatinine clearance decreases. Recommended starting doses, based on clinical and pharmacokinetic data from patients with renal impairment, are as follows:
Creatinine Clearance
Maximum Recommended Initial Dose
>60 mL/min 10 mg 30–60 mL/min 5 mg 10–30 mL/min 2.5 mg <10 mL/min Insufficient data for dosage recommendationPatients should subsequently have their dosage titrated (as described above) to the optimal response.
Elderly (≥65 years)The recommended initial dosage of quinapril hydrochloride tablets in elderly patients is 10 mg given once daily followed by titration (as described above) to the optimal response.
Heart FailureQuinapril hydrochloride tablets are indicated as adjunctive therapy when added to conventional therapy including diuretics and/or digitalis. The recommended starting dose is 5 mg twice daily. This dose may improve symptoms of heart failure, but increases in exercise duration have generally required higher doses. Therefore, if the initial dosage of quinapril hydrochloride tablets is well tolerated, patients should then be titrated at weekly intervals until an effective dose, usually 20 to 40 mg daily given in two equally divided doses, is reached or undesirable hypotension, orthostatis, or azotemia (see ) prohibit reaching this dose. WARNINGS
Following the initial dose of quinapril hydrochloride tablets, the patient should be observed under medical supervision for at least two hours for the presence of hypotension or orthostatis and, if present, until blood pressure stabilizes. The appearance of hypotension, orthostatis, or azotemia early in dose titration should not preclude further careful dose titration. Consideration should be given to reducing the dose of concomitant diuretics.
DOSE ADJUSTMENTS IN PATIENTS WITH HEART FAILURE AND RENAL IMPAIRMENT OR HYPONATREMIAPharmacokinetic data indicate that quinapril elimination is dependent on level of renal function. In patients with heart failure and renal impairment, the recommended initial dose of quinapril hydrochloride tablets is 5 mg in patients with a creatinine clearance above 30 mL/min and 2.5 mg in patients with a creatinine clearance of 10 to 30 mL/min. There is insufficient data for dosage recommendation in patients with a creatinine clearance less than 10 mL/min (see , , and ). DOSAGE AND ADMINISTRATION, Heart FailureWARNINGSPRECAUTIONS, Drug Interactions
If the initial dose is well tolerated, quinapril hydrochloride tablets may be administered the following day as a twice daily regimen. In the absence of excessive hypotension or significant deterioration of renal function, the dose may be increased at weekly intervals based on clinical and hemodynamic response.
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