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Cleviprex (clevidipine butyrate) injectable emulsion (The Medicines Company)



  • Safety Information
  • Description
  • Clinical Trials
  • Dosing/Administration
    PRESCRIBING INFO
  • Indications and Usage
  • Dosage/Administration
  • Dosage Forms
  • Contraindications
  • Warnings/Precautions
  • Adverse Reactions
  • Drug Interactions
  • Use in Specific Populations
  • Overdosage
  • Clinical Pharmacology
  • How Supplied
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  • IMPORTANT SAFETY INFORMATION

    Cleviprex is intended for intravenous use. Titrate drug depending on the response of the individual patient to achieve the desired blood pressure reduction. Monitor blood pressure and heart rate continually during infusion, and then until vital signs are stable. Patients who receive prolonged Cleviprex infusions and are not transitioned to other antihypertensive therapies should be monitored for the possibility of rebound hypertension for at least 8 hours after the infusion is stopped.

    Cleviprex is contraindicated in patients with allergies to soybeans, soy products, eggs, or egg products; defective lipid metabolism such as pathologic hyperlipemia, lipoid nephrosis, or acute pancreatitis if it is accompanied by hyperlipidemia; and in patients with severe aortic stenosis.

    Hypotension and reflex tachycardia are potential consequences of rapid upward titration of Cleviprex. Dihydropyridine calcium channel blockers can produce negative inotropic effects and exacerbate heart failure. Monitor heart failure patients carefully. Cleviprex gives no protection against the effects of abrupt beta-blocker withdrawal.

    Most common adverse reactions (> 2%) are headache, nausea, and vomiting.

    Cleviprex should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus.

    Maintain aseptic technique while handling Cleviprex. Cleviprex contains phospholipids and can support microbial growth. Do not use if contamination is suspected. Once the stopper is punctured, use and discard within 4 hours.

    DESCRIPTION

    The Clevipidine Molecule

    Clevidipine ButyrateCleviprex is supplied as a sterile, milky white, ready-to-use lipid emulsion that contains clevidipine butyrate, soybean oil, glycerin, purified egg yolk phospholipids, and sodium hydroxide to adjust pH.1 Cleviprex is formulated and administered in a lipid emulsion because clevidipine butyrate is practically insoluble in water.1

    Rapidly Metabolized by Tissue and Blood Esterases

    Cleviprex is rapidly metabolized by hydrolysis of the ester linkage, primarily by esterases in the blood and extravascular tissues, making its elimination unlikely to be affected by hepatic or renal dysfunction1 In vitro studies show that Cleviprex and its metabolite, at the concentrations achieved in clinical practice, will not inhibit or induce any cytochrome P (CYP) enzyme1 The potential of Cleviprex to interact with other drugs is low1

    Metabolism in Blood and Extravascular Tissues2

    Figure adapted from Ericsson H et al. Anesthesiology. 2000;92:993-1001.

    Hemodynamics

    A New Dynamic for Targeted BP Control

    Cleviprex is a vascular and arterial selective dihydropyridine L-type calcium antagonist that mediates the influx of calcium during depolarization in vascular smooth muscle.1 It reduces mean arterial BP by decreasing systemic vascular resistance (SVR) while increasing cardiac output (CO) and stroke volume (SV).2 As a pure afterload reducer, Cleviprex has no effect on venous return or cardiac filling pressure (preload).1

    Cleviprex Lowers BP With Targeted Hemodynamics*

    *Studied in 9 postoperative cardiac bypass graft patients. This graph shows the effects at the highest Cleviprex dose (3 micrograms/kg/min); +P<.001; ++P<.05. BP=blood pressure; CO=cardiac output; MAP=mean arterial pressure; SBP=systolic blood pressure; SV=stroke volume; SVR=systemic vascular resistance.

    Figure adapted from Kieler-Jensen N et al. Acta Anaesthesiol Scand. 2000;44:186-193.

    Efficacy of Cleviprex

    Rapid On, Rapid Off: A Predictable Performance

    Cleviprex has a rapid onset and offset of BP-lowering effects for a predictable pharmacologic response, and an ultrashort half-life of approximately 1 minute provides rapid-acting control. Cleviprex demonstrates a dose-dependent BP-lowering response. The onset of effect is seen within 2 to 4 minutes after infusion, and full recovery of BP is achieved 5 to 15 minutes after the infusion is stopped in most patients.

    Safety Profile

    Demonstrated Safety in Clinical Trials in More Than 1,800 Patients

    Drug-drug interactions

    • The potential of Cleviprex to interact with other drugs is low
    • Cleviprex does not have the potential for blocking or inducing any CYP enzyme
    Adverse reactions
    • The most common adverse reactions (>2%) with Cleviprex are headache, nausea, and vomiting
    Special populations
    • No adjustment of initial dosage necessary in patients with renal or hepatic dysfunction
    • In geriatric patients, doses should be titrated cautiously, starting at the low end of the dosing range. In clinical tirals, no overall differences in safety or effectiveness were observed between these and younger patients with Cleviprex
    Additional considerations
    • Cleviprex is photosensitive and storage in cartons protects against photodegradation. Protection from light during administration is not required
    • Store vials refrigerated at 2 to 8�C (36-46�F). Do not freeze
    • Cleviprex should not be administered in the same line as other medications

    CLINICAL TRIALS

    Cleviprex has been evaluated in 19 clinical studies, including more than 1,400 Cleviprex-treated patients in a variety of clinical settings, including the emergency department, operating room, and critical care unit.

    Cleviprex Phase 3 Clinical Trial Program


    BP=blood pressure; ECLIPSE=Evaluation of CLevidipine In the Perioperative Treatment of Hypertension Assessing Safety Events; ESCAPE= Efficacy Study of Clevidipine Assessing Its Preoperative/Postoperative Antihypertensive Effect in Cardiac Surgery; NIC=nicardipine; NTG=nitroglycerin; SNP=sodium nitroprusside; VELOCITY=EValuation of the Effect of ULtra-ShOrt-Acting Clevidipine In the Treatment of Patients With Severe HYpertension.

    ESCAPE Trials

    In Perioperative Patients Requiring Rapid Reduction of Blood Pressure, Rapid Control That�s on Target

    Cleviprex rapidly reduced blood pressure (BP) to target levels in cardiac surgery patients requiring preoperative or postoperative BP control in the ESCAPE-1 (Efficacy Study of Clevidipine Assessing Its Preoperative Antihypertensive Effect in Cardiac Surgery-1) and ESCAPE-2 (Efficacy Study of Clevidipine Assessing Its Postoperative Antihypertensive Effect in Cardiac Surgery-2) trials.1,2

    The ESCAPE trials were phase 3, randomized, double-blind, placebo-controlled, multicenter trials evaluating the efficacy and tolerability of Cleviprex in a total of 215 cardiac surgery patients requiring preoperative (ESCAPE-1) or postoperative (ESCAPE-2) BP control.1,2

    ESCAPE-1=Efficacy Study of Clevidipine Assessing Its Preoperative Antihypertensive Effect in Cardiac Surgery-1; ESCAPE-2=Efficacy Study of Clevidipine Assessing Its Postoperative Antihypertensive Effect in Cardiac Surgery-2; HTN=hypertension; SBP=systolic blood pressure.

    Primary End Point

    • Antihypertensive efficacy, as evaluated by comparing the incidence of treatment failure between Cleviprex and placebo over the 30-minute study drug infusion period. Treatment failure was defined as discontinuation of study drug for any reason or failure to decrease systolic blood pressure (SBP) by >=15% before the end of the 30-minute treatment period
    Secondary End Points
    • Time to target BP (first decrease of SBP by >=15% from baseline); change in mean arterial pressure from baseline; change in heart rate. The incidence of adverse events (AEs) was recorded starting from study drug initiation through hospital discharge or 7 days, whichever came first
    Cleviprex Lowered BP to Target in >90% of Patients

    *Dose of 0.4-8.0 micrograms/kg/min in preoperative and postoperative coronary and/or valve surgery patients. +Treatment success defined by the absence of treatment failure (discontinuation of Cleviprex or failure to reduce SBP by >=15%).
    BP=blood pressure; SBP=systolic blood pressure.

    Cleviprex Acts Fast to Reduce BP to Target in More Than 90% of Patients

    *P<.0001; +In ESCAPE-2, the decrease in placebo group SBP reflects the number of placebo patients (n=49 at baseline) who bailed out during the 30-minute infusion period (n=10 remaining at 30 minutes); ++P=.0005; $P<.0001; ||P=.0001.

    During the 7 days after study drug initiation, the types and rates of the most commonly reported adverse events were similar in the 2 treatment groups in both studies, with none of the differences in adverse event rates being statistically significant

    ECLIPSE Trials

    In Perioperative Patients Requiring Rapid Reduction of BP, Comparable Safety. Predictable Performance.

    The ECLIPSE (Evaluation of CLevidipine In the Perioperative Treatment of Hypertension Assessing Safety Events) trial comprised 3 phase 3, prospective, randomized, open-label, parallel, multicenter studies comparing the safety and efficacy of Cleviprex with that of nitroglycerin (NTG), sodium nitroprusside (SNP), and nicardipine (NIC) in the treatment of perioperative and postoperative hypertension in cardiac surgery patients.

    Safety Evaluated in More Than 1,500 Cardiac Surgery Patients

    Primary End Point
    • Safety, as assessed by the incidence of death, myocardial infarction, stroke, and renal dysfunction from the start of study drug infusion through postoperative Day 30
    Secondary End Point
    • Efficacy (BP control) of Cleviprex compared with that of NTG, SNP, and NIC during the first 24 hours or removal of arterial line, whichever came first
    Cleviprex Was Similar to Comparators
    • There was no difference between the pooled Cleviprex population and the pooled comparator population for any of the 30-day safety outcome measures


    NS = not significant.

    Excursions Over and Under Target Range Define BP Control

    BP control was assessed as a prespecified secondary end point by measuring the magnitude and duration of excursions outside the predefined SBP target ranges of 75-145 mmHg for pre- and postoperative control and 65-135 mmHg for intraoperative control. The following example illustrates a single patient�s excursions used to assess BP control.

    AUC=area under the curve; SBP=systolic blood pressure.

    Minimal Excursions Outside of SBP Target Range With Cleviprex

    AUC=area under the curve; NIC=nicardipine; NTG=nitroglycerin; SBP=systolic blood pressure;
    SNP=sodium nitroprusside.

    In general, the incidence of adverse events (AEs) and serious AEs, including the most commonly occurring AEs of atrial fibrillation and acute renal failure, were similar between Cleviprex and the comparator agents No clinically significant differences in clinical laboratory data were seen between Cleviprex and the comparators, including no change in triglyceride levels from baseline

    VELOCITY Trial

    In Severe Hypertensive Patients Requiring Rapid Reduction of BP, Rapid Control in a Range of Patients

    Cleviprex is effective and well tolerated for controlling BP in patients with severe hypertension requiring urgent treatment, as demonstrated by the VELOCITY (EValuation of the Effect of ULtra-ShOrt-Acting Clevidipine In the Treatment of Patients With Severe HYpertension) trial.1

    The VELOCITY trial was a phase 3, open-label, single-arm, multicenter study that evaluated the safety and efficacy of Cleviprex in 126 patients who presented to the emergency department or the intensive care unit with severe hypertension.1

    Primary End Points
    • Efficacy: percentage of patients in whom SBP fell within the SBP initial target range (ITR) within 30 minutes of initiating infusion
    • Safety: percentage of patients whose SBP fell below the lower limit of the SBP ITR within 3 minutes of initiating infusion
    Secondary End Points
    • Efficacy: time to achieve the 30-minute SBP ITR
    • Safety: proportion of patients successfully transitioned to oral antihypertensive therapy (defined as SBP within the last specified target range at 6 hours after discontinuation of Cleviprex infusion); safety of prolonged continuous infusion of Cleviprex (>=18 hours)
    Cleviprex Rapidly Lowered BP to Target in ~90% of Patients in 30 Minutes
    • The probability of achieving the prespecified SBP target range by 30 minutes (N=117; modified intent-to-treat patients) was 91.4%, according to Kaplan-Meier analysis

    ITR=initial target range; SBP=systolic blood pressure.
    • Cleviprex was initiated at 2 mg/h and titrated as needed in doubling increments every 3 minutes up to 32 mg/h over a 30-minute period
    • Titratable BP control reduces the risk of overshoot and reduces the need for a rescue agent
      - 2 patients (1.6%) fell below the lower SBP ITR limit within the first 3 minutes of drug infusion
    • 99% of patients (125 of 126) were safely and effectively managed with BP cuff monitoring throughout the infusion and did not require an arterial line
    • Median time to achieve target BP was 10.9 minutes (95% confidence interval: 9.0, 15.0)
      - Median time to achieve a 15% reduction in SBP was 9.5 minutes (post-hoc analysis)

    Titratable Control Maintains Performance
    • Patients achieving target BP within 30 minutes continued infusion up to 32 mg/h for a protocol-specified duration of at least 18 hours and up to 96 hours, with dosing adjustments as needed to maintain desired blood pressure
    • More than 90% of patients maintained BP control on Cleviprex monotherapy, eliminating the need for additional intravenous antihypertensive therapy
    • Headache (6.3%; 8 of 126), nausea (4.8%; 6 of 126), chest discomfort (3.2%; 4 of 126), and vomiting (3.2%; 4 of 126) were the most common AEs
    • Cleviprex did not raise serum triglyceride levels
      - Median percentage change in concentration of serum triglyceride levels was zero at 6 hours after cessation of therapy
      - No relationship between change in triglyceride levels and total dose of Cleviprex received (Pearson�s correlation coefficient = -0.0269)
    Cleviprex Provides a Reliable Transition to Oral Antihypertensive Therapy
    • 98% (115 of 118) of eligible patients successfully transitioned to oral therapy to a predefined target BP within 6 hours of discontinuing Cleviprex
    • Patients were maintained on a steady infusion of Cleviprex without evidence of tachyphylaxis, drug accumulation, or rebound hypertension on discontinuation

    DOSING AND ADMINISTRATION

    Predictable BP Control With Convenient Dosing

    Cleviprex is supplied in sterile, pre-mixed, ready-to-use 50 mL or 100 mL vials. Invert vial gently several times before use to ensure uniformity of the emulsion prior to administration. Inspect parenteral drug products for particulate matter and discoloration prior to administration whenever solution and container permit. Administer Cleviprex using an infusion device allowing calibrated infusion rates. Commercially available standard plastic cannulae may be used to administer the infusion. Administer Cleviprex by a central line or a peripheral line.

    Cleviprex should not be administered in the same line as other medications.

    Cleviprex should not be diluted, but it can be administered with

    • Water for Injection, USP
    • Sodium Chloride (0.9%) Injection, USP
    • Dextrose (5%) Injection, USP
    • Dextrose (5%) in Sodium Chloride (0.9%) Injection, USP
    • Dextrose (5%) in Ringers Lactate Injection, USP
    • Lactated Ringers Injection, USP
    • 10% amino acid
    Non�Weight-Based Dosing Regimen

    Cleviprex is intended for intravenous (IV) use and should be titrated to achieve the desired blood pressure (BP) reduction. Dosage must be individualized, depending on the BP to be obtained, and the response of the patient. No dosage adjustment is required for patients with underlying hepatic or renal impairment.

    Maintenance Dose
    • Most patients will achieve desired therapeutic response at 4-6 mg/h
    Maximum Dose
    • Most patients have received maximum doses of 16 mg/h or less
    • Because of lipid load restrictions, no more than 1000 mL, or an average of 21 mg/h, is recommended per 24-hour period
    • There is little experience with infusions beyond 72 hours at any dose
    Transitioning From Cleviprex to Oral Antihypertensive Therapy
    • Discontinue Cleviprex or titrate downward while appropriate oral therapy is established
    • When an oral antihypertensive agent is being instituted, consider the lag time of onset of the oral agent�s effect
    • Continue monitoring BP until desired effect is achieved
    Storing Cleviprex
    • Leave Cleviprex vials in cartons until administration to protect from light
      - Protection from light during administration is not required
    • Vials should be stored refrigerated at 2-8�C (36-46�F). Do not freeze
    • Vials in cartons may be transferred to 25�C (77�F, USP controlled room temperature) for a period not to exceed 2 months, indicated by the "Discard By" Date marked by the dispensing pharmacist, and should not be returned to refrigerated storage after beginning room temperature storage

    PRESCRIBING INFORMATION

    HIGHLIGHTS OF PRESCRIBING INFORMATION

    These highlights do not include all the information needed to use Cleviprex safely and effectively. See full prescribing information for Cleviprex. Cleviprex (clevidipine butyrate) injectable emulsion, for intravenous use Initial U.S. Approval: 2008

    INDICATIONS AND USAGE

    Cleviprex is a dihydropyridine calcium channel blocker indicated for the reduction of blood pressure when oral therapy is not feasible or not desirable.

    DOSAGE AND ADMINISTRATION

    For intravenous use: Cleviprex is intended for intravenous use. Titrate Cleviprex to achieve the desired blood pressure reduction. Individualize dosage depending on the blood pressure response of the patient and the goal blood pressure. (2.2)

    Monitoring: Monitor blood pressure and heart rate during infusion, and until vital signs stabilize. (2.1) Initial dose: Initiate intravenous infusion of Cleviprex at 1-2 mg/hour. (2.2)

    Dose titration: Double the dose at short (90 second) intervals initially. As the blood pressure approaches goal, increase the dose by less than doubling and lengthen the time between dose adjustments to every 5-10 minutes. An approximately 1-2 mg/hour increase will generally produce an additional 2-4 mmHg decrease in systolic pressure. (2.2)

    Maintenance dose: Most patients will achieve the desired therapeutic response at approximately 4-6 mg/hour. Severe hypertension is likely to require higher doses. (2.2)

    Maximum dose: Most patients have received maximum doses of 16 mg/hour or less. There is limited experience with short-term dosing as high as 32 mg/hour. Because of lipid load restrictions, no more than 1000 mL or an average of 21 mg/hour of Cleviprex infusion is recommended per 24-hour period. There is little experience beyond 72 hours at any dose. (2.2)

    DOSAGE FORMS AND STRENGTHS

    Single-use vials: 50 mL or 100 mL. Concentration is 0.5 mg/mL. (3)

    CONTRAINDICATIONS

    Cleviprex is contraindicated in patients with:

    • Allergy to soy or eggs (4.1)
    • Defective lipid metabolism (4.2)
    • Severe aortic stenosis (4.3)
        WARNINGS AND PRECAUTIONS
      • Maintain aseptic technique. Discard unused portion 4 hours after stopper puncture. (5.1)
      • Hypotension and reflex tachycardia are potential consequences of rapid upward titration of Cleviprex. (5.2)
      • Dihydropyridine calcium channel blockers can produce negative inotropic effects and exacerbate heart failure. Monitor heart failure patients carefully. (5.4)
      • Cleviprex gives no protection against the effects of abrupt beta-blocker withdrawal. (5.5)
      • Patients who receive prolonged Cleviprex infusions and are not transitioned to other antihypertensive therapies should be monitored for the possibility of rebound hypertension for at least 8 hours after the infusion is stopped. (5.6)
    ADVERSE REACTIONS

    Most common adverse reactions (>2%) are headache, nausea, and vomiting. (6.1)

    To report SUSPECTED ADVERSE REACTIONS, contact The Medicines Company at 1-888-977-MDCO (6326) or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.

    DRUG INTERACTIONS

    At clinically relevant concentrations, clevidipine butyrate and its metabolites do not inhibit or induce any CYP450 enzymes. The potential of clevidipine butyrate to interact with other drugs is low. (7)

    USE IN SPECIFIC POPULATIONS

    Pediatric use: Safety and effectiveness of Cleviprex in children under 18 years of age have not been established. (8.4)

    See 17 for PATIENT COUNSELING INFORMATION.

    Revised: 08/2008

    FULL PRESCRIBING INFORMATION: CONTENTS*

    WARNING
    1 INDICATIONS AND USAGE
    2 DOSAGE AND ADMINISTRATION
    2.1 Monitoring
    2.2 Recommended Dosing
    2.3 Instructions for Administration
    3 DOSAGE FORMS AND STRENGTHS
    4 CONTRAINDICATIONS
    4.1 Known Allergy
    4.2 Defective Lipid Metabolism
    4.3 Severe Aortic Stenosis
    5 WARNINGS AND PRECAUTIONS
    5.1 Need for Aseptic Technique
    5.2 Hypotension and Reflex Tachycardia
    5.3 Lipid Intake
    5.4 Negative Inotropy
    5.5 Beta-Blocker Withdrawal
    5.6 Rebound Hypertension
    5.7 Pheochromocytoma
    6 ADVERSE REACTIONS
    6.1 Clinical Trials Experience
    7 DRUG INTERACTIONS
    8 USE IN SPECIFIC POPULATIONS
    8.1 Pregnancy
    8.2 Labor and Delivery
    8.3 Nursing Mothers
    8.4 Pediatric Use
    8.5 Geriatric Use
    10 OVERDOSAGE
    11 DESCRIPTION
    12 CLINICAL PHARMACOLOGY
    12.1 Mechanism of Action
    12.2 Pharmacodynamics
    12.3 Pharmacokinetics
    13 NONCLINICAL TOXICOLOGY
    13.1 Carcinogenesis, Mutagenesis, Impairment of Fertility
    13.3 Developmental Toxicology
    14 CLINICAL STUDIES
    14.1 Perioperative Hypertension
    14.2 Severe Hypertension
    14.3 Essential Hypertension
    16 HOW SUPPLIED/STORAGE AND HANDLING
    17 PATIENT COUNSELING INFORMATION
    *Sections or subsections omitted from the full prescribing information are not listed.

    FULL PRESCRIBING INFORMATION

    1 INDICATIONS AND USAGE

    Cleviprex is indicated for the reduction of blood pressure when oral therapy is not feasible or not desirable.

    2 DOSAGE AND ADMINISTRATION

    2.1 Monitoring

    Monitor blood pressure and heart rate continually during infusion, and then until vital signs are stable. Patients who receive prolonged Cleviprex infusions and are not transitioned to other antihypertensive therapies should be monitored for the possibility of rebound hypertension for at least 8 hours after the infusion is stopped. These patients may need follow-up adjustments in blood pressure control.

    2.2 Recommended Dosing

    Cleviprex is intended for intravenous use. Titrate drug to achieve the desired blood pressure reduction. Individualize dosage depending on the blood pressure to be obtained and the response of the patient.

    Initial dose: Initiate the intravenous infusion of Cleviprex at 1-2 mg/hour.

    Dose titration: The dose may be doubled at short (90 second) intervals initially. As the blood pressure approaches goal, the increase in doses should be less than doubling and the time between dose adjustments should be lengthened to every 5-10 minutes. An approximately 1-2 mg/hour increase will generally produce an additional 2-4 mmHg decrease in systolic pressure.

    Maintenance dose: The desired therapeutic response for most patients occurs at doses of 4-6 mg/hour. Patients with severe hypertension may require doses up to 32 mg/hour, but there is limited experience at this dose rate.

    Maximum dose: Most patients were treated with maximum doses of 16 mg/hour or less. There is limited short-term experience with doses up to 32 mg/hour. Because of lipid load restrictions, no more than 1000 mL or an average of 21 mg/hour of Cleviprex infusion is recommended per 24-hour period. In clinical trials, 55 hypertensive patients were treated with > 500 mL of Cleviprex infusion per 24-hour period. There is little experience with infusion durations beyond 72 hours at any dose.

    Transition to an oral antihypertensive agent: Discontinue Cleviprex or titrate downward while appropriate oral therapy is established. When an oral antihypertensive agent is being instituted, consider the lag time of onset of the oral agent�s effect. Continue blood pressure monitoring until desired effect is achieved.

    Special populations: Special populations were not specifically studied. In clinical trials, 78 patients with abnormal hepatic function (one or more of the following: elevated serum bilirubin, AST/SGOT, ALT/SGPT) and 121 patients with moderate to severe renal impairment were treated with Cleviprex. An initial Cleviprex infusion rate of 1-2 mg/hour is appropriate in these patients.

    Table 1 is a guideline for dosing conversion from mg/hour to mL/hour.

    Table 1. Dose conversion

    Dose Dose
    (mg/hour) (mL/hour)
        1	      2
        2	      4
        4	      8
        6	     12
        8	     16
       10	     20
       12	     24
       14	     28
       16	     32
       18	     36
       20	     40
       22	     44
       24	     48
       26	     52
       28	     56
       30	     60
       32	     64
    

    2.3 Instructions for Administration

    Maintain aseptic technique while handling Cleviprex. Cleviprex is a single-use parenteral product that contains phospholipids and can support microbial growth. Do not use if contamination is suspected. Once the stopper is punctured, use within 4 hours and discard any unused portion including that which is currently being infused.

    Cleviprex is supplied in sterile, pre-mixed, ready-to-use 50 mL or 100 mL vials. Invert vial gently several times before use to ensure uniformity of the emulsion prior to administration. Inspect parenteral drug products for particulate matter and discoloration prior to administration whenever solution and container permit. Administer Cleviprex using an infusion device allowing calibrated infusion rates. Commercially available standard plastic cannulae may be used to administer the infusion. Administer Cleviprex by a central line or a peripheral line.

    Cleviprex should not be administered in the same line as other medications.

    Cleviprex should not be diluted, but it can be administered with the following:
    • Water for Injection, USP
    • Sodium Chloride (0.9%) Injection, USP
    • Dextrose (5%) Injection, USP
    • Dextrose (5%) in Sodium Chloride (0.9%) Injection, USP
    • Dextrose (5%) in Ringers Lactate Injection, USP
    • Lactated Ringers Injection, USP
    • 10% amino acid

    3 DOSAGE FORMS AND STRENGTHS

    Cleviprex is a sterile, milky white injectable emulsion for intravenous use, available in the following two configurations:

    • 50 mL single-use vial with 0.5 mg/mL clevidipine butyrate
    • 100 mL single-use vial with 0.5 mg/mL clevidipine butyrate

    4 CONTRAINDICATIONS

    Cleviprex is a sterile, milky white injectable emulsion for intravenous use,

    4.1 Known Allergy

    Cleviprex is contraindicated in patients with allergies to soybeans, soy products, eggs, or egg products.

    4.2 Defective Lipid Metabolism

    Cleviprex is contraindicated in patients with defective lipid metabolism such as pathologic hyperlipemia, lipoid nephrosis, or acute pancreatitis if it is accompanied by hyperlipidemia.

    4.3 Severe Aortic Stenosis

    Cleviprex is contraindicated in patients with severe aortic stenosis because afterload reduction can be expected to reduce myocardial oxygen delivery.

    5 WARNINGS AND PRECAUTIONS

    5.1 Need for Aseptic Technique Use aseptic technique and discard any unused product�including product being infused�within 4 hours of stopper puncture [see Dosage and Administration (2.3)].

    5.2 Hypotension and Reflex Tachycardia

    Cleviprex may produce systemic hypotension and reflex tachycardia. If either occurs, decrease the dose of Cleviprex. There is limited experience with short-duration therapy with beta-blockers as a treatment for Cleviprexinduced tachycardia. Beta-blocker use for this purpose is not recommended.

    5.3 Lipid Intake

    Cleviprex contains approximately 0.2 g of lipid per mL (2.0 kcal). Lipid intake restrictions may be necessary for patients with significant disorders of lipid metabolism. For these patients, a reduction in the quantity of concurrently administered lipids may be necessary to compensate for the amount of lipid infused as part of the Cleviprex formulation.

    5.4 Negative Inotropy

    Dihydropyridine calcium channel blockers can produce negative inotropic effects and exacerbate heart failure. Monitor heart failure patients carefully.

    5.5 Beta-Blocker Withdrawal

    Cleviprex is not a beta-blocker, does not reduce heart rate, and gives no protection against the effects of abrupt beta-blocker withdrawal. Betablockers should be withdrawn only after a gradual reduction in dose.

    5.6 Rebound Hypertension

    Patients who receive prolonged Cleviprex infusions and are not transitioned to other antihypertensive therapies should be monitored for the possibility of rebound hypertension for at least 8 hours after the infusion is stopped.

    5.7 Pheochromocytoma

    There is no information to guide use of Cleviprex in treating hypertension associated with pheochromocytoma.

    6 ADVERSE REACTIONS

    The following risk is discussed elsewhere in the labeling:

    • Hypotension and Reflex Tachycardia [see Warnings and Precautions (5.2)]
    6.1 Clinical Trials Experience

    Cleviprex clinical development included 19 studies, with 99 healthy subjects and 1307 hypertensive patients who received at least one dose of clevidipine butyrate (1406 total exposures). Clevidipine butyrate was evaluated in 15 studies in hypertensive patients: 1099 patients with perioperative hypertension, 126 with severe hypertension and 82 patients with essential hypertension.

    The desired therapeutic response was achieved at doses of 4-6 mg/hour. Cleviprex was infused for <24-hours in the majority of patients (n=1199); it was infused as a continuous infusion in an additional 93 patients for durations between 24 and 72 hours.

    Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice.

    Perioperative Hypertension

    The placebo-controlled experience with Cleviprex in the perioperative setting was both small and brief (about 30 minutes). Table 2 shows treatmentemergent adverse reactions and the category of �any common adverse event� in ESCAPE-1 and ESCAPE-2 where the rate on Cleviprex exceeded the rate on placebo by at least 5% (common adverse reactions).

    Table 2. Common adverse reactions in placebo-controlled perioperative studies.

    Three randomized, parallel, open-label studies called ECLIPSE, with longer exposure in cardiac surgery patients define the adverse reactions for patients with perioperative hypertension. Each ECLIPSE study compared Cleviprex (n=752) to an active comparator: nitroglycerin (NTG, n=278), sodium nitroprusside (SNP, n=283), or nicardipine (NIC, n=193). The pooled mean maximum dose in these studies was 10 mg/hour and the mean duration of treatment was 8 hours.

    There were many adverse events associated with the operative procedure in the clinical studies of Cleviprex and relatively few plausibly related to the drugs used to lower blood pressure. Thus, the ability to differentiate the adverse event profile between treatments is limited. The adverse events observed within one hour of the end of the infusion were similar in patients who received Cleviprex and in those who received comparator agents. There was no adverse reaction that was more than 2% more common on Cleviprex than on the average of all comparators.

    Serious Adverse Events and Discontinuation�Perioperative Hypertension Studies

    The incidence of adverse events leading to study drug discontinuation in patients with perioperative hypertension receiving Cleviprex was 5.9% versus 3.2% for all active comparators. For patients receiving Cleviprex and all active comparators the incidence of serious adverse events within one hour of drug infusion discontinuation was similar.

    Severe Hypertension

    The adverse events for patients with severe hypertension are based on an uncontrolled study in patients with severe hypertension (VELOCITY, n=126).

    The common adverse reactions for Cleviprex in severe hypertension included headache (6.3%), nausea (4.8%), and vomiting (3.2%). The incidence of adverse events leading to study drug discontinuation for Cleviprex in severe hypertension was 4.8%

    Less Common Adverse Reactions in Patients with Severe or Essential Hypertension

    Adverse reactions that were reported in <1% of patients with severe or essential hypertension included:

    Cardiac: myocardial infarction, cardiac arrest

    Nervous system: syncope

    Respiratory: dyspnea

    7 DRUG INTERACTIONS

    No clinical drug interaction studies were conducted. Clevidipine butyrate and its major dihydropyridine metabolite do not have the potential for blocking or inducing any CYP enzyme.

    8 USE IN SPECIFIC POPULATIONS

    8.1 Pregnancy

    Pregnancy Category C

    There are no adequate and well-controlled studies of Cleviprex use in pregnant women. In animal studies, clevidipine butyrate caused increases in maternal and fetal mortality and length of gestation. Cleviprex should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus.

    There was decreased fetal survival when pregnant rats and rabbits were treated with clevidipine butyrate during organogenesis at doses 0.7 times (on a body surface area basis) the maximum recommended human dose (MRHD) in rats and 2 times the MRHD in rabbits.

    In pregnant rats dosed with clevidipine butyrate during late gestation and lactation, there were dose-related increases in maternal mortality, length of gestation and prolonged parturition at doses greater than or equal to 1/6 of the MRHD based on body surface area. When offspring of these dams were mated, they had a conception rate lower than that of controls. Clevidipine butyrate has been shown to cross the placenta in rats [see Nonclinical Toxicology (13.3)].

    8.2 Labor and Delivery

    Cleviprex in the labor and delivery setting has not been established as safe and effective. Other calcium channel blockers suppress uterine contractions in humans. Pregnant rats treated with clevidipine butyrate during late gestation had an increased rate of prolonged parturition.

    8.3 Nursing Mothers It is not known whether clevidipine butyrate is excreted in human milk. Because many drugs are excreted in human milk, consider possible infant exposure when Cleviprex is administered to a nursing woman.

    8.4 Pediatric Use

    The safety and effectiveness of Cleviprex in children under 18 years of age have not been established.

    8.5 Geriatric Use

    Of the 1406 subjects (1307 with hypertension) treated with Cleviprex in clinical studies, 620 were >=65 years of age and 232 were >=75 years of age. No overall differences in safety or effectiveness were observed between these and younger patients. Other reported clinical experience has not identified differences in responses between the elderly and younger patients. In general, for an elderly patient doses should be titrated cautiously, usually starting at the low end of the dosing range, reflecting the greater frequency of decreased hepatic, renal or cardiac function, and of concomitant disease or other drug therapy.

    10 OVERDOSAGE

    There has been no experience of overdosage in human clinical trials. In clinical trials, doses of Cleviprex up to 106 mg/hour or 1153 mg maximum total dose were administered. The expected major effects of overdose would be hypotension and reflex tachycardia.

    Discontinuation of Cleviprex leads to a reduction in antihypertensive effects within 5 to 15 minutes [see Clinical Pharmacology (12.2)]. In case of suspected overdosage, Cleviprex should be discontinued immediately and the patient�s blood pressure should be supported.

    12 CLINICAL PHARMACOLOGY

    12.1 Mechanism of Action

    Clevidipine butyrate is a dihydropyridine L-type calcium channel blocker. L-type calcium channels mediate the influx of calcium during depolarization in arterial smooth muscle. Experiments in anesthetized rats and dogs show that clevidipine butyrate reduces mean arterial blood pressure by decreasing systemic vascular resistance. Clevidipine butyrate does not reduce cardiac filling pressure (pre-load), confirming lack of effects on the venous capacitance vessels.

    12.2 Pharmacodynamics

    Cleviprex is titrated to the desired reduction in blood pressure. The effect of Cleviprex appears to plateau at approximately 25% of baseline systolic pressure. The infusion rate for which half the maximal effect is observed is approximately 10 mg/hour.

    Onset of Effect: In the perioperative patient population, Cleviprex produces a 4-5% reduction in systolic blood pressure within 2-4 minutes after starting a 0.4 mcg/kg/min infusion (approximately 1-2 mg/hour).

    Maintenance of Effect: In studies up to 72 hours of continuous infusion, there was no evidence of tolerance or hysteresis.

    Offset of Effect: In most patients, full recovery of blood pressure is achieved in 5-15 minutes after the infusion is stopped.

    In studies up to 72 hours of continuous infusion, in patients that were not transitioned to other antihypertensive therapies, there was some evidence of rebound hypertension following Cleviprex discontinuation.

    Hemodynamics: Cleviprex causes a dose-dependent decrease in systemic vascular resistance.

    Heart Rate: An increase in heart rate is a normal response to vasodilation and decrease in blood pressure; in some patients these increases in heart rate may be pronounced [see Warnings and Precautions (5.2)].

    Electrophysiologic Effects: In healthy volunteers, clevidipine butyrate or its major carboxylic acid metabolite, at therapeutic and supratherapeutic concentrations (approximately 2.8 times steady-state), did not prolong cardiac repolarization.

    12.3 Pharmacokinetics

    Clevidipine butyrate is rapidly distributed and metabolized resulting in a very short half-life. The arterial blood concentration of clevidipine butyrate declines in a multiphasic pattern following termination of the infusion. The initial phase half-life is approximately 1 minute, and accounts for 85-90% of clevidipine butyrate elimination. The terminal half-life is approximately 15 minutes.

    Distribution: Clevidipine butyrate is >99.5% bound to proteins in plasma at 37�C.

    The steady-state volume of distribution was determined to be 0.17 L/kg in arterial blood.

    Metabolism and Elimination: Clevidipine butyrate is rapidly metabolized by hydrolysis of the ester linkage, primarily by esterases in the blood and extravascular tissues, making its elimination unlikely to be affected by hepatic or renal dysfunction. The primary metabolites are the carboxylic acid metabolite and formaldehyde formed by hydrolysis of the ester group. The carboxylic acid metabolite is inactive as an antihypertensive. This metabolite is further metabolized by glucuronidation or oxidation to the corresponding pyridine derivative. The clearance of the primary dihydropyridine metabolite is 0.03 L/h/kg and the terminal half-life is approximately 9 hours. In vitro studies show that clevidipine butyrate and its metabolite at the concentrations achieved in clinical practice will not inhibit or induce any CYP enzyme.

    In a clinical study with radiolabeled clevidipine butyrate, 83% of the drug was excreted in urine and feces. The major fraction, 63-74% is excreted in the urine, 7-22% in the feces. More than 90% of the recovered radioactivity is excreted within the first 72 hours of collection.

    16 HOW SUPPLIED/STORAGE AND HANDLING

    Cleviprex (clevidipine butyrate) injectable emulsion is supplied as a sterile, milky white liquid emulsion product in single-use 50 mL or 100 mL glass vials at a concentration of 0.5 mg/mL of clevidipine butyrate.

    NDC 65293-002-50: 50 mL vial
    NDC 65293-002-00: 100 mL vial

    Storage

    Leave vials in cartons until use. Clevidipine butyrate is photosensitive and storage in cartons protects against photodegradation. Protection from light during administration is not required.

    Store vials refrigerated at 2-8�C (36-46�F). Do not freeze. Vials in cartons may be transferred to 25�C (77�F, USP controlled room temperature) for a period not to exceed 2 months. Upon transfer to room temperature, mark vials in cartons �This product was removed from the refrigerator on _/_/_ date. It must be used or discarded 2 months after this date or the labeled expiration date (whichever date comes first).� Do not return to refrigerated storage after beginning room temperature storage.

    17 PATIENT COUNSELING INFORMATION

    • Advise patients with underlying hypertension that they require continued follow up for their medical condition, and, if applicable, encourage patients to continue taking their oral antihypertensive medication(s) as directed.
    • Advise patients to contact a healthcare professional immediately for any of the following signs of a new hypertensive emergency: neurological symptoms, visual changes, or evidence of congestive heart failure.
    Rx only

    The Medicines Company

    Cleviprex is a registered trademark of The Medicines Company.

    ©2008, The Medicines Company, All rights reserved.

    December 2008








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