CANDESARTAN CILEXETIL- candesartan cilexetil tablet
American Health Packaging
HIGHLIGHTS OF PRESCRIBING INFORMATION
These highlights do not include all the information needed to use candesartan cilexetil tablets safely and effectively. See full prescribing information for candesartan cilexetil tablets.
Candesartan Cilexetil Tablets, for oral use
INITIAL U.S. APPROVAL: 1998
RECENT MAJOR CHANGES
INDICATIONS AND USAGE
Candesartan Cilexetil Tablets are an angiotensin II receptor blocker (ARB) indicated for:
DOSAGE AND ADMINISTRATION
DOSAGE FORMS AND STRENGTHS
Tablets 4 mg, 8 mg, 16 mg, 32 mg (3).
WARNINGS AND PRECAUTIONS
To report SUSPECTED ADVERSE REACTIONS, contact Sandoz Inc., at 1-800-525-8747 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.
USE IN SPECIFIC POPULATIONS
See 17 for PATIENT COUNSELING INFORMATION and FDA-approved patient labeling.
FULL PRESCRIBING INFORMATION: CONTENTS*
Candesartan cilexetil tablets are indicated for the treatment of hypertension in adults and children 1 to < 17 years of age. It may be used alone or in combination with other antihypertensive agents.
Candesartan cilexetil tablets is indicated for the treatment of heart failure (NYHA class II-IV) in adults with left ventricular systolic dysfunction (ejection fraction ≤ 40%) to reduce cardiovascular death and to reduce heart failure hospitalizations [see CLINICAL STUDIES (14.2)]. Candesartan cilexetil tablets also have an added effect on these outcomes when used with an ACE inhibitor.
Dosage must be individualized. Blood pressure response is dose related over the range of 2 to 32 mg. The usual recommended starting dose of candesartan cilexetil tablets is 16 mg once daily when it is used as monotherapy in patients who are not volume depleted. Candesartan cilexetil tablets can be administered once or twice daily with total daily doses ranging from 8 mg to 32 mg. Larger doses do not appear to have a greater effect, and there is relatively little experience with such doses. Most of the antihypertensive effect is present within 2 weeks, and maximal blood pressure reduction is generally obtained within 4 to 6 weeks of treatment with candesartan cilexetil tablets.
Use in Hepatic Impairment: Initiate with 8 mg candesartan cilexetil tablets in patients with moderate hepatic insufficiency. Dosing recommendations cannot be provided for patients with severe hepatic insufficiency [see CLINICAL PHARMACOLOGY (12.3)].
Candesartan cilexetil tablets may be administered with or without food.
If blood pressure is not controlled by candesartan cilexetil tablets alone, a diuretic may be added. Candesartan cilexetil tablets may be administered with other antihypertensive agents.
Candesartan cilexetil tablets may be administered once daily or divided into two equal doses. Adjust the dosage according to blood pressure response. For patients with possible depletion of intravascular volume (e.g., patients treated with diuretics, particularly those with impaired renal function), initiate candesartan cilexetil tablets under close medical supervision and consider administration of a lower dose [see WARNINGS AND PRECAUTIONS (5.3)].
Children 1 to < 6 years of age: The dose range is 0.05 to 0.4 mg/kg per day. The recommended starting dose is 0.20 mg/kg (oral suspension).
Children 6 to < 17 years of age: For those less than 50 kg, the dose range is 2 to 16 mg per day. The recommended starting dose is 4 to 8 mg.
For those greater than 50 kg, the dose range is 4 to 32 mg per day. The recommended starting dose is 8 to 16 mg.
Doses above 0.4 mg/kg (1 to < 6 year olds) or 32 mg (6 to < 17 year olds) have not been studied in pediatric patients [see CLINICAL STUDIES (14.1)] .
An antihypertensive effect is usually present within 2 weeks, with full effect generally obtained within 4 weeks of treatment with candesartan cilexetil tablets.
Children < 1 year of age must not receive candesartan cilexetil tablets for hypertension.
All pediatric patients with a glomerular filtration rate less than 30 ml/min/1.73m 2 should not receive candesartan cilexetil tablets since candesartan cilexetil tablets have not been studied in this population [see SPECIAL POPULATIONS (8)].
For children who cannot swallow tablets, an oral suspension may be substituted as described below:
Preparation of Oral Suspension:
Candesartan cilexetil oral suspension can be prepared in concentrations within the range of 0.1 to 2 mg/mL. Typically, a concentration of 1 mg/mL will be suitable for the prescribed dose. Any strength of candesartan cilexetil tablets can be used in the preparation of the suspension.
Follow the steps below for preparation of the suspension. The number of tablets and volume of vehicle specified below will yield 160 mL of a 1 mg/mL suspension.
Store at 20º to 25ºC (68º to 77ºF). [See USP Controlled Room Temperature]. Use within 30 days after first opening. Do not use after the expiry date stated on the bottle.
Do not freeze.
Shake well before each use.
4 mg, white to off-white, round tablets debossed with M on left side of the score and C on right side of the score on one side of the tablet and 24 on the other side.
8 mg, pink, round tablets debossed with M on left side of the score and C on right side of the score on one side of the tablet and 25 on the other side.
16 mg, pink, round tablets debossed with M on left side of the score and C on right side of the score on one side of the tablet and 31 on the other side.
32 mg, pink, round tablets debossed with MC above the score and 32 below the score on one side of the tablet and blank on the other side. .
Children < 1 year of age must not receive candesartan cilexetil for hypertension. Drugs that act directly on the renin-angiotensin system (RAS) can have effects on the development of immature kidneys.
Candesartan cilexetil can cause symptomatic hypotension. Symptomatic hypotension is most likely to occur in patients who have been volume and/or salt depleted as a result of prolonged diuretic therapy, diatary salt restriction, dialysis, diarrhea, or vomiting. Patients with symptomatic hypotension may require temporarily reducing the dose of candesartan cilexetil, diuretic, or both, and volume repletion. Volume and/or salt depletion should be corrected before initiating therapy with candesartan cilexetil.
In the CHARM program (heart failure patients), hypotension was reported in 18.8% of patients on candesartan cilexetil versus 9.8% of patients on placebo. The incidence of hypotension leading to drug discontinuation in candesartan cilexetil-treated patients was 4.1% compared with 2% in placebo-treated patients. In the CHARM-Added program, where candesartan or placebo was given in addition to ACE inhibitors, hypotension was reported in 22.6% of patients treated with candesartan cilexetil versus 13.8% treated with placebo [see DRUG INTERACTIONS (7)].
Monitoring of blood pressure is recommended during dose escalation and periodically thereafter.
Hypotension may occur during major surgery and anesthesia in patients treated with angiotensin II receptor antagonists, including candesartan cilexetil, due to blockade of the renin-angiotensin system. Very rarely, hypotension may be severe such that it may warrant the use of intravenous fluids and/or vasopressors.
Monitor renal function periodically in patients treated with candesartan cilexetil. Changes in renal function including acute renal filure can be caused by drugs that inhibit the renin-angiotensin system. Patients whose renal function may depend in part on the activity of the renin-angiotensin system (e.g., patients with renal artery stenosis, chronic kidney diseas, severe heart failure or volume depletion) may be at particular risk of developing oliguria, progressive azotemia or acute renal failure when treated with candesartan cilexetil. Consider withholding or discontinuing therapy in patients who develop a clinically significant decrease in renal function on candesartan cilexetil.
In the CHARM program (heart failure patients), the incidence of abnormal renal function (e.g., creatinine increase) was 12.5% in patients treated with candesartan cilexetil versus 6.3% in patients treated with placebo. The incidence of abnormal renal function (e.g., creatinine increase) leading to drug discontinuation in candesartan cilexetil-treated patients was 6.3% compared with 2.9% in placebo-treated patients. In the CHARM-Added program, where candesartan or placebo was given in addition to ACE inhibitors, the incidence or abnormal renal function (e.g., creatinine increase) was 15% in patients treated with candesartan cilxetil versus 9% in patients treated with placebo [see DRUG INTERACTIONS (7)].
Drugs that inhibit the renin-angiotensin system can cause hyperkalemia. Monitor serum potassium periodically.
In the CHARM program (heart failure patients), the incidence of hyperkalemia was 6.3% in patients treated with candesartan cilexetil versus 2.1% in patients treated with placebo. The incidence of hyperkalemia leading to drug discontinuation in candesartan cilexetil-treated patients was 2.4% compared with 0.6% in placebo-treated patients. In the CHARM-Added program where candesartan or placebo was given in addition to ACE inhibitors, the incidence of hyperkalemia was 9.5% in patients treated with candesartan cilexetil versus 3.5% in patients treated with placebo [see DRUG INTERACTIONS ( 7)].
Because clinical studies 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.
Candesartan cilexetil has been evaluated for safety in more than 3600 patients/subjects, including more than 3200 patients treated for hypertension. About 600 of these patients were studied for at least 6 months and about 200 for at least 1 year. In general, treatment with candesartan cilexetil was well tolerated. The overall incidence of adverse events reported with candesartan cilexetil was similar to placebo.
The rate of withdrawals due to adverse events in all trials in patients (7510 total) was 3.3% (i.e., 108 of 3260) of patients treated with candesartan cilexetil as monotherapy and 3.5% (i.e., 39 of 1106) of patients treated with placebo. In placebo-controlled trials, discontinuation of therapy due to clinical adverse events occurred in 2.4% (i.e., 57 of 2350) of patients treated with candesartan cilexetil and 3.4% (ie., 35 of 1027) of patients treated with placebo.
The most common reasons for discontinuation of therapy with candesartan cilexetil were headache (0.6%) and dizziness (0.3%).
The adverse events that occurred in placebo-controlled clinical trials in at least 1% of patients treated with candesartan cilexetil and at a higher incidence in candesartan cilexetil (n = 2350) than placebo (n = 1027) patients included back pain (3% vs. 2%), dizziness (4% vs. 3%), upper respiratory tract infection (6% vs. 4%), pharyngitis (2% vs. 1%), and rhinitis (2% vs. 1%).
Among children in clinical studies, 1 in 93 children age 1 to < 6 and 3 in 240 age 6 to < 17 experienced worsening renal disease. The association between candesartan and exacerbation of the underlying condition could not be excluded.
The adverse event profile of candesartan cilexetil in adult heart failure patients was consistent with the pharmacology of the drug and the health status of the patients. In the CHARM program, comparing candesartan cilexetil in total daily doses up to 32 mg once daily (n=3803) with placebo (n=3796), 21% of patients discontinued candesartan cilexetil for adverse events vs. 16.1% of placebo patients.
The following adverse reactions were identified during post-approval use of candesartan cilexetil. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure.
The following have been very rarely reported in post-marketing experience:
Digestive: Abnormal hepatic function and hepatitis.
Hematologic: Neutropenia, leukopenia, and agranulocytosis.
Metabolic and Nutritional Disorders: Hyperkalemia, hyponatremia.
Respiratory System Disorders: Cough.
Skin and Appendages Disorders: Pruritus, rash and urticaria.
Rare reports of rhabdomyolysis have been reported in patients receiving angiotensin II receptor blockers.
Pregnancy Category D
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 candesartan cilexetil as soon as possible. These adverse outcomes are usually associated with use of these drugs in the second and third trimester of pregnancy. Most epidemiologic studies examining fetal abnormalities after exposure to antihypertensive use in the first trimester have not distinguished drugs affecting the renin-angiotensin system from other antihypertensive agents. Appropriate management of maternal hypertension during pregnancy is important to optimize outcomes for both mother and fetus.
In the unusual case that there is no appropriate alternative to therapy with drugs affecting the renin-angiotensin system for a particular patient, apprise the mother of the potential risk to the fetus. Perform serial ultrasound examinations to assess the intra-amniotic environment. If oligohydramnios is observed, discontinue candesartan cilexetil, unless it is considered lifesaving for the mother. Fetal testing may be appropriate, based on the week of pregnancy. Patients and physicians should be aware, however, that oligohydramnios may not appear until after the fetus has sustained irreversible injury. Closely observe infants with histories of in utero exposure to candesartan cilexetil for hypotension, oliguria, and hyperkalemia. [see USE IN SPECIFIC POPULATIONS (8.4)].
The effect of candesartan cilexetil on labor and delivery in humans is unknown [see WARNINGS AND PRECAUTIONS (5.1)] .
It is not known whether candesartan is excreted in human milk, but candesartan has been shown to be present in rat milk. Because of the potential for adverse effects on the nursing infant, a decision should be made whether to discontinue nursing or discontinue candesartan cilexetil, taking into account the importance of the drug to the mother.
Neonates with a history of in utero exposure to Candesartan Cilexetil
If oliguria or hypotension occurs, direct attention toward support of blood pressure and renal perfusion. Exchange transfusions or dialysis may be required as a means of reversing hypotension and/or substituting for disordered renal function.
The antihypertensive effects of candesartan cilexetil were evaluated in hypertensive children 1 to < 17 years of age in randomized, double-blind clinical studies [see CLINICAL STUDIES (14.1)]. The pharmacokinetics of candesartan cilexetil have been evaluated in pediatric patients 1 to < 17 years of age [see Pharmacokinetics (12.3)].
Children < 1 year of age must not receive candesartan cilexetil for hypertension [see WARNINGS AND PRECAUTIONS (5.2)].
No lethality was observed in acute toxicity studies in mice, rats, and dogs given single oral doses of up to 2000 mg/kg of candesartan cilexetil. In mice given single oral doses of the primary metabolite, candesartan, the minimum lethal dose was greater than 1000 mg/kg but less than 2000 mg/kg.
The most likely manifestation of overdosage with candesartan cilexetil would be hypotension, dizziness, and tachycardia; bradycardia could occur from parasympathetic (vagal) stimulation. If symptomatic hypotension should occur, supportive treatment should be instituted.
Candesartan cannot be removed by hemodialysis.
To obtain up-to-date information about the treatment of overdose, consult your Regional Poison Control Center. Telephone numbers of certified poison control centers are listed in the Physicians’ Desk Reference (PDR). In managing overdose, consider the possibilities of multiple-drug overdoses, drug-drug interactions, and altered pharmacokinetics in your patient.
Candesartan cilexetil, a prodrug, is hydrolyzed to candesartan during absorption from the gastrointestinal tract. Candesartan is a selective AT 1 subtype angiotensin II receptor antagonist.
Candesartan cilexetil, a nonpeptide, is chemically described as (±)2-Ethoxy-1-[[2’-(1 H-tetrazol-5-yl)[1,1’-biphenyl]-4-yl]methyl]-1 H-benzimidazole-7-carboxylic acid-1-[[cyclohexyloxy)carbonyl]oxy]ethyl ester.
Its molecular formula is C 33H 34N 6O 6, and its structural formula is:
Candesartan cilexetil, USP is a white to off-white powder with a molecular weight of 610.66. It is soluble in methylene chloride, slightly soluble in methanol and practically insoluble in water. Candesartan cilexetil is a racemic mixture containing one chiral center at the cyclohexyloxycarbonyloxy ethyl ester group. Following oral administration, candesartan cilexetil undergoes hydrolysis at the ester link to form the active drug, candesartan, which is achiral.
Candesartan cilexetil is available for oral use as tablets containing either 4 mg, 8 mg, 16 mg, or 32 mg of candesartan cilexetil, USP and the following inactive ingredients: hydroxypropyl cellulose, lactose monohydrate, maize starch, carboxymethylcellulose calcium, glyceryl stearate and magnesium stearate. The 8 mg, 16 mg, and 32 mg tablets contain red iron oxide as a colorant.
Angiotensin II is formed from angiotensin I in a reaction catalyzed by angiotensin-converting enzyme (ACE, kininase II). Angiotensin II is the principal pressor agent of the renin-angiotensin system, with effects that include vasoconstriction, stimulation of synthesis and release of aldosterone, cardiac stimulation, and renal reabsorption of sodium. Candesartan blocks the vasoconstrictor and aldosterone-secreting effects of angiotensin II by selectively blocking the binding of angiotensin II to the AT 1 receptor in many tissues, such as vascular smooth muscle and the adrenal gland. Its action is, therefore, independent of the pathways for angiotensin II synthesis.
There is also an AT 2 receptor found in many tissues, but AT 2 is not known to be associated with cardiovascular homeostasis. Candesartan has much greater affinity (>10,000-fold) for the AT 1 receptor than for the AT 2 receptor.
Blockade of the renin-angiotensin system with ACE inhibitors, which inhibit the biosynthesis of angiotensin II from angiotensin I, is widely used in the treatment of hypertension. ACE inhibitors also inhibit the degradation of bradykinin, a reaction also catalyzed by ACE. Because candesartan does not inhibit ACE (kininase II), it does not affect the response to bradykinin. Whether this difference has clinical relevance is not yet known. Candesartan does not bind to or block other hormone receptors or ion channels known to be important in cardiovascular regulation.
Blockade of the angiotensin II receptor inhibits the negative regulatory feedback of angiotensin II on renin secretion, but the resulting increased plasma renin activity and angiotensin II circulating levels do not overcome the effect of candesartan on blood pressure.
Candesartan inhibits the pressor effects of angiotensin II infusion in a dose-dependent manner. After 1 week of once daily dosing with 8 mg of candesartan cilexetil, the pressor effect was inhibited by approximately 90% at peak with approximately 50% inhibition persisting for 24 hours.
Plasma concentrations of angiotensin I and angiotensin II, and plasma renin activity (PRA), increased in a dose-dependent manner after single and repeated administration of candesartan cilexetil to healthy subjects, hypertensive, and heart failure patients. ACE activity was not altered in healthy subjects after repeated candesartan cilexetil administration. The once-daily administration of up to 16 mg of candesartan cilexetil to healthy subjects did not influence plasma aldosterone concentrations, but a decrease in the plasma concentration of aldosterone was observed when 32 mg of candesartan cilexetil was administered to hypertensive patients. In spite of the effect of candesartan cilexetil on aldosterone secretion, very little effect on serum potassium was observed.
In multiple-dose studies with hypertensive patients, there were no clinically significant changes in metabolic function, including serum levels of total cholesterol, triglycerides, glucose, or uric acid. In a 12-week study of 161 patients with non-insulin-dependent (type 2) diabetes mellitus and hypertension, there was no change in the level of HbA 1c.
In heart failure patients, candesartan ≥8 mg resulted in decreases in systemic vascular resistance and pulmonary capillary wedge pressure.
The volume of distribution of candesartan is 0.13 L/kg. Candesartan is highly bound to plasma proteins (>99%) and does not penetrate red blood cells. The protein binding is constant at candesartan plasma concentrations well above the range achieved with recommended doses. In rats, it has been demonstrated that candesartan crosses the blood-brain barrier poorly, if at all. It has also been demonstrated in rats that candesartan passes across the placental barrier and is distributed in the fetus.
Metabolism and Excretion
Total plasma clearance of candesartan is 0.37 mL/min/kg, with a renal clearance of 0.19 mL/min/kg. When candesartan is administered orally, about 26% of the dose is excreted unchanged in urine. Following an oral dose of 14C-labeled candesartan cilexetil, approximately 33% of radioactivity is recovered in urine and approximately 67% in feces. Following an intravenous dose of 14C-labeled candesartan, approximately 59% of radioactivity is recovered in urine and approximately 36% in feces. Biliary excretion contributes to the elimination of candesartan.
Candesartan cilexetil is rapidly and completely bioactivated by ester hydrolysis during absorption from the gastrointestinal tract to candesartan, a selective AT 1 subtype angiotensin II receptor antagonist. Candesartan is mainly excreted unchanged in urine and feces (via bile). It undergoes minor hepatic metabolism by O-deethylation to an inactive metabolite. The elimination half-life of candesartan is approximately 9 hours. After single and repeated administration, the pharmacokinetics of candesartan are linear for oral doses up to 32 mg of candesartan cilexetil. Candesartan and its inactive metabolite do not accumulate in serum upon repeated once-daily dosing.
Following administration of candesartan cilexetil, the absolute bioavailability of candesartan was estimated to be 15%. After tablet ingestion, the peak serum concentration (C max) is reached after 3 to 4 hours. Food with a high fat content does not affect the bioavailability of candesartan after candesartan cilexetil administration.
In children 1 to 17 years of age, plasma levels are greater than 10-fold higher at peak (approximately 4 hours) than 24 hours after a single dose.
Children 1 to < 6 years of age, given 0.2 mg/kg had exposure similar to adults given 8 mg.
Children > 6 years of age had exposure similar to adults given the same dose.
The pharmacokinetics (C max and AUC) were not modified by age, sex or body weight.
Candesartan cilexetil pharmacokinetics have not been investigated in pediatric patients less than 1 year of age.
From the dose-ranging studies of candesartan cilexetil, there was a dose related increase in plasma candesartan concentrations.
The renin-angiotensin system (RAS) plays a critical role in kidney development. RAS blockade has been shown to lead to abnormal kidney development in very young mice. Children < 1 year of age must not receive candesartan cilexetil. Administering drugs that act directly on the renin-angiotensin system (RAS) can alter normal renal development.
Geriatric and Sex
The pharmacokinetics of candesartan have been studied in the elderly (≥ 65 years) and in both sexes. The plasma concentration of candesartan was higher in the elderly (C max was approximately 50% higher, and AUC was approximately 80% higher) compared to younger subjects administered the same dose. The pharmacokinetics of candesartan were linear in the elderly, and candesartan and its inactive metabolite did not accumulate in the serum of these subjects upon repeated, once-daily administration. No initial dosage adjustment is necessary [see DOSAGE AND ADMINISTRATION (2)] . There is no difference in the pharmacokinetics of candesartan between male and female subjects.
In hypertensive patients with renal insufficiency, serum concentrations of candesartan were elevated. After repeated dosing, the AUC and C max were approximately doubled in patients with severe renal impairment (creatinine clearance <30 mL/min/1.73m 2) compared to patients with normal kidney function. The pharmacokinetics of candesartan in hypertensive patients undergoing hemodialysis are similar to those in hypertensive patients with severe renal impairment. Candesartan cannot be removed by hemodialysis. No initial dosage adjustment is necessary in patients with renal insufficiency [see DOSAGE AND ADMINISTRATION (2.1)].
In heart failure patients with renal impairment, AUC 0-72h was 36% and 65% higher in mild and moderate renal impairment, respectively. C max was 15% and 55% higher in mild and moderate renal impairment, respectively.
Candesartan cilexetil pharmacokinetics have not been determined in children with renal insufficiency.
The pharmacokinetics of candesartan were compared in patients with mild and moderate hepatic impairment to matched healthy volunteers following a single oral dose of 16 mg candesartan cilexetil. The increase in AUC for candesartan was 30% in patients with mild hepatic impairment (Child-Pugh A) and 145% in patients with moderate hepatic impairment (Child-Pugh B). The increase in C max for candesartan was 56% in patients with mild hepatic impairment and 73% in patients with moderate hepatic impairment. The pharmacokinetics after candesartan cilexetil administration have not been investigated in patients with severe hepatic impairment. No initial dosage adjustment is necessary in patients with mild hepatic impairment. In hypertensive patients with moderate hepatic impairment, consideration should be given to initiation of candesartan cilexetil at a lower dose [see DOSAGE AND ADMINISTRATION (2.1)].
The pharmacokinetics of candesartan were linear in patients with heart failure (NYHA class II and III) after candesartan cilexetil doses of 4, 8, and 16 mg. After repeated dosing, the AUC was approximately doubled in these patients compared with healthy, younger patients. The pharmacokinetics in heart failure patients is similar to that in healthy elderly volunteers [see DOSAGE AND ADMINISTRATION (2.3)] .
There was no evidence of carcinogenicity when candesartan cilexetil was orally administered to mice and rats for up to 104 weeks at doses up to 100 and 1000 mg/kg/day, respectively. Rats received the drug by gavage, whereas mice received the drug by dietary administration. These (maximally-tolerated) doses of candesartan cilexetil provided systemic exposures to candesartan (AUCs) that were, in mice, approximately 7 times and, in rats, more than 70 times the exposure in man at the maximum recommended daily human dose (32 mg).
Candesartan and its O-deethyl metabolite tested positive for genotoxicity in the in vitro Chinese hamster lung (CHL) chromosomal aberration assay. Neither compound tested positive in the Ames microbial mutagenesis assay or the in vitro mouse lymphoma cell assay. Candesartan (but not its O-deethyl metabolite) was also evaluated in vivo in the mouse micronucleus test and in vitro in the Chinese hamster ovary (CHO) gene mutation assay, in both cases with negative results. Candesartan cilexetil was evaluated in the Ames test, the in vitro mouse lymphoma cell and rat hepatocyte unscheduled DNA synthesis assays and the in vivo mouse micronucleus test, in each case with negative results. Candesartan cilexetil was not evaluated in the CHL chromosomal aberration or CHO gene mutation assay.
Fertility and reproductive performance were not affected in studies with male and female rats given oral doses of up to 300 mg/kg/day (83 times the maximum daily human dose of 32 mg on a body surface area basis).
The antihypertensive effects of candesartan cilexetil were examined in 14 placebo-controlled trials of 4- to 12-weeks duration, primarily at daily doses of 2 to 32 mg per day in patients with baseline diastolic blood pressures of 95 to 114 mm Hg. Most of the trials were of candesartan cilexetil as a single agent, but it was also studied as add-on to hydrochlorothiazide and amlodipine. These studies included a total of 2350 patients randomized to one of several doses of candesartan cilexetil and 1027 to placebo. Except for a study in diabetics, all studies showed significant effects, generally dose related, of 2 to 32 mg on trough (24 hour) systolic and diastolic pressures compared to placebo, with doses of 8 to 32 mg giving effects of about 8 to 12/4 to 8 mm Hg. There were no exaggerated first-dose effects in these patients. Most of the antihypertensive effect was seen within 2 weeks of initial dosing and the full effect in 4 weeks. With once-daily dosing, blood pressure effect was maintained over 24 hours, with trough to peak ratios of blood pressure effect generally over 80%. Candesartan cilexetil had an additional blood pressure lowering effect when added to hydrochlorothiazide.
The antihypertensive effects of candesartan cilexetil and losartan potassium at their highest recommended doses administered once-daily were compared in two randomized, double-blind trials. In a total of 1268 patients with mild to moderate hypertension who were not receiving other antihypertensive therapy, candesartan cilexetil 32 mg lowered systolic and diastolic blood pressure by 2 to 3 mm Hg on average more than losartan potassium 100 mg, when measured at the time of either peak or trough effect. The antihypertensive effects of twice daily dosing of either candesartan cilexetil or losartan potassium were not studied.
The antihypertensive effect was similar in men and women and in patients older and younger than 65. Candesartan was effective in reducing blood pressure regardless of race, although the effect was somewhat less in blacks (usually a low-renin population). This has been generally true for angiotensin II antagonists and ACE inhibitors.
In long-term studies of up to 1 year, the antihypertensive effectiveness of candesartan cilexetil was maintained, and there was no rebound after abrupt withdrawal.
There were no changes in the heart rate of patients treated with candesartan cilexetil in controlled trials.
The antihypertensive effects of candesartan cilexetil were evaluated in hypertensive children 1 to < 6 years old and 6 to < 17 years of age in two randomized, double-blind multicenter, 4-week dose ranging studies. There were 93 patients 1 to < 6 years of age, 74% of whom had renal disease, that were randomized to receive an oral dose of candesartan cilexetil suspension 0.05, 0.20 or 0.40 mg/kg once daily. The primary method of analysis was slope of the change in systolic blood pressure (SBP) as a function of dose. Since there was no placebo group, the change from baseline likely overestimates the true magnitude of blood pressure effect. Nevertheless, SBP and diastolic blood pressure (DBP) decreased 6/5.2 to 12/11.1 mmHg from baseline across the three doses of candesartan.
In children 6 to < 17 years, 240 patients were randomized to receive either placebo or low, medium, or high doses of candesartan cilexetil in a ratio of 1: 2: 2: 2. For children who weighed < 50 kg the doses of candesartan cilexetil were 2, 8, or 16 mg once daily. For those > 50 kg the candesartan cilexetil doses were 4, 16 or 32 mg once daily. Those enrolled were 47% Black and 29% were female; mean age +/- SD was 12.9 +/- 2.6 years.
The placebo subtracted effect at trough for sitting systolic blood pressure/sitting diastolic blood pressure for the different doses were from 4.9/3 to 7.5/6.2 mmHg.
In children 6 to < 17 years there was a trend for a lesser blood pressure effect for Blacks compared to other patients. There were too few individuals in the age group of 1 to 6 years old to determine whether Blacks respond differently than other patients to candesartan cilexetil.
Candesartan was studied in two heart failure outcome studies: 1. The Candesartan in Heart failure: Assessment of Reduction in Mortality and morbidity trial in patients intolerant of ACE inhibitors (CHARM–Alternative), 2. CHARM–Added in patients already receiving ACE inhibitors. Both studies were international double-blind, placebo-controlled trials in patients with NYHA class II - IV heart failure and LVEF ≤40%. In both trials, patients were randomized to placebo or candesartan cilexetil (initially 4 to 8 mg once daily, titrated as tolerated to 32 mg once daily) and followed for up to 4 years. Patients with serum creatinine > 3 mg/dL, serum potassium > 5.5 mEq/L, symptomatic hypotension or known bilateral renal artery stenosis were excluded. The primary end point in both trials was time to either cardiovascular death or hospitalization for heart failure.
CHARM–Alternative included 2028 subjects not receiving an ACE inhibitor due to intolerance. The mean age was 67 years and 32% were female, 48% were NYHA II, 49% were NYHA III, 4% were NYHA IV, and the mean ejection fraction was 30%. Sixty-two percent had a history of myocardial infarction, 50% had a history of hypertension, and 27% had diabetes. Concomitant drugs at baseline were diuretics (85%), digoxin (46%), beta-blockers (55%), and spironolactone (24%). The mean daily dose of candesartan cilexetil was approximately 23 mg and 59% of subjects on treatment received 32 mg once daily.
After a median follow-up of 34 months, there was a 23% reduction in the risk of cardiovascular death or heart failure hospitalization on candesartan cilexetil (p<0.001), with both components contributing to the overall effect ( Table 1).
CV death or heart failure hospitalization
(0.67 to 0.89)
(0.71 to 1.02)
Heart failure hospitalization
(0.57 to 0.81)
In CHARM–Added, 2548 subjects receiving an ACE inhibitor were randomized to candesartan cilexetil or placebo. The specific ACE inhibitor and dose were at the discretion of the investigators, who were encouraged to titrate patients to doses known to be effective in clinical outcome trials, subject to patient tolerability. Forced titration to maximum tolerated doses of ACE inhibitor was not required.
The mean age was 64 years and 21% were female, 24% were NYHA II, 73% were NYHA III, 3% were NYHA IV, and the mean ejection fraction was 28%. Fifty-six percent had a history of myocardial infarction, 48% had a history of hypertension, and 30% had diabetes. Concomitant drugs at baseline in addition to ACE inhibitors were diuretics (90%), digoxin (58%), beta-blockers (55%), and spironolactone (17%). The mean daily dose of candesartan cilexetil was approximately 24 mg and 61% of subjects on treatment received 32 mg once daily.
After a median follow-up of 41 months, there was a 15% reduction in the risk of cardiovascular death or heart failure hospitalization on candesartan cilexetil (p=0.011), with both components contributing to the overall effect ( Table 2). There was no evident relationship between dose of ACE inhibitor and the benefit of candesartan cilexetil.
CV death or heart failure hospitalization
Heart failure hospitalization
In these two studies, the benefit of candesartan cilexetil in reducing the risk of CV death or heart failure hospitalization (18% p<0.001) was evident in major subgroups (see Figure), and in patients on other combinations of cardiovascular and heart failure treatments, including ACE inhibitors and beta-blockers.
Figure. CV Death or Heart Failure Hospitalization in Subgroups – LV Systolic Dysfunction Trials
Candesartan cilexetil tablets are available containing 16 mg of candesartan cilexetil, USP.
16 mg, pink, mottled round tablets debossed with
M on left side of the score and
C on right side of the score on one side of the tablet and
31 on the other side. They are available as follows:
Unit dose packages of 30 (5 x 6) NDC 68084-877-25
Store at 20º to 25ºC (68º to 77ºF) [see USP Controlled Room Temperature].
FOR YOUR PROTECTION: Do not use if blister is torn or broken.
See FDA-approved patient labeling (Patient Information).
Female patients of childbearing age should be told about the consequences of exposure to Candesartan cilexetil tablets during pregnancy. Discuss treatment options with women planning to become pregnant. Patients should be asked to report pregnancies to their physicians as soon as possible.
American Health Packaging unit dose blisters (see
How Supplied section) contain drug product from Sandoz Inc as follows:
(16 mg / 30 UD) NDC 68084-877-25 packaged from NDC 0781-5938
American Health Packaging
Columbus, OH 43217
Candesartan Cilexetil Tablets
Read the Patient information that comes with candesartan cilexetil tablets before you start taking it and each time you get a refill. There may be new information. This leaflet does not take the place of talking with your doctor about your medical condition or your treatment. If you have any questions about candesartan cilexetil tablets, ask your doctor or pharmacist.
What is the most important information I should know about candesartan cilexetil tablets?
Candesartan cilexetil tabletscan cause harm or death to an unborn baby. Talk to your doctor about other ways to lower your blood pressure if you plan to become pregnant. If you get pregnant while taking candesartan cilexetil tablets, tell your doctor right away.
What are candesartan cilexetil tablets?
Candesartan cilexetil tablets are a prescription medicine called an angiotensin receptor blocker (ARB).
Candesartan cilexetil tablets are used to:
Heart failure is a condition where the heart does not pump blood as well as it should.
Candesartan cilexetil tablets must not be used in children less than 1 year of age for high blood pressure.
Who should not take candesartan cilexetil tablets?
Do not take candesartan cilexetiltablets if you:
What should I tell my doctor before taking candesartan cilexetil tablets?
Before you take candesartan cilexetil tablets, tell your doctor if you:
Tell your doctor about all the medicines you take, including prescription and non-prescription medicines, vitamins and herbal supplements. Candesartan cilexetil tablets and other medicines may affect each other causing serious side effects. Candesartan cilexetil tablets may affect the way other medicines work, and other medicines may affect how candesartan cilexetil tablets work.
Especially tell your doctor if you take:
Know the medicines you take. Keep a list of your medications with you to show your doctor and pharmacist when a new medication is prescribed. Talk to your doctor or pharmacist before you start taking any new medicine. Your doctor or pharmacist will know what medicines are safe to take together.
How should I take candesartan cilexetil tablets?
If you miss a dose of candesartan cilexetil tablets, take it as soon as you remember. If it is almost time for your next dose, skip the missed dose. Take the next dose on time. Do not take 2 doses at one time. If you are not sure about your dosing call your doctor or pharmacist.
What should I avoid while taking candesartan cilexetil tablets?
Candesartan cilexetil tablets can cause you to feel dizzy or tired. Do not drive, operate machinery, or do other dangerous activities until you know how candesartan cilexetil tablets affect you.
What are the possible side effects of candesartan cilexetil tablets?
Candesartan cilexetil tablets may cause serious side effects, including:
If you feel dizzy or faint lie down and call your doctor right away.
Low blood pressure can also happen if you have major surgery or anesthesia. You will be monitored for this and treated if needed. See “What should I tell my doctor before taking candesartan cilexetil tablets?”
The most common side effects of candesartan cilexetil tablets are:
Tell your doctor or pharmacist about any side effect that bothers you or that does not go away.
These are not all the side effects of candesartan cilexetil tablets. Ask your doctor or pharmacist for more information.
Call your doctor for medical advice about side effects. You can report side effects to FDA at 1-800-FDA-1088.
How should I store candesartan cilexetil tablets?
Keep candesartan cilexetil tabletsand all medicine out of the reach of children.
General information about candesartan cilexetil tablets.
Medicines are sometimes prescribed for conditions that are not mentioned in patient information leaflets. Do not use candesartan cilexetil tablets for a condition for which it was not prescribed. Do not give candesartan cilexetil tablets to other people, even if they have the same problem you have. It may harm them.
This leaflet summarizes the most important information about candesartan cilexetil tablets. If you would like more information, talk with your doctor. You can ask your doctor or pharmacist for information about candesartan cilexetil tablets that is written for health professionals.
For more information, call Sandoz Inc. at 1-800-525-8747.
What are the ingredients in candesartan cilexetil tablets?
Active ingredient: candesartan cilexetil, USP.
Inactive ingredients in candesartan cilexetil tablets and candesartan cilexetil oral suspension are: hydroxypropyl cellulose, lactose monohydrate, maize starch, carboxymethylcellulose calcium, glyceryl stearate and magnesium stearate. The 8 mg, 16 mg, and 32 mg tablets contain red iron oxide as a colorant.
In addition to the above, candesartan cilexetil oral suspension also includes the following inactive ingredients: Ora Plus ®*, Ora Sweet ®* or Ora-Blend ®*†.
How do candesartan cilexetil tablets work?
Candesartan cilexetil tabletsare a type of medicine called angiotensin receptor blocker, which blocks the effect of the hormone angiotensin II, causing the blood vessels to relax. This helps lower blood pressure.
This Patient Information has been approved by the U.S. Food and Drug Administration.
* The brand names mentioned are registered trademarks of their respective manufacturers.
† Supplied as a 50/50% pre-mix of Ora-Plus ® and Ora-Sweet SF ®.
American Health Packaging
Columbus, OH 43217
30 Tablets (5 x 6)
PHARMACIST: Dispense the accompanying
Patient Information Leaflet to each patient.
Each Tablet Contains:
Candesartan cilexetil, USP…………………16 mg
Usual Dosage: See package insert for full
Store at 20° to 25°C (68° to 77°F); excursions
permitted between 15° to 30°C (59° to 86°F) [see
USP Controlled Room Temperature].
Keep this and all drugs out of reach of children.
FOR YOUR PROTECTION: Do not use if blister is
torn or broken.
The drug product contained in this package is from
NDC # 0781-5938, Sandoz Inc.
American Health Packaging
Columbus, Ohio 43217
candesartan cilexetil tablet
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