Ropivacaine Hydrochloride

1 INDICATIONS AND USAGE Ropivacaine Hydrochloride Injection is indicated for the production of local or regional anesthesia for surgery and for acute pain management. Surgical Anesthesia : epidural block for surgery including cesarean section; major nerve block; local infiltration Acute Pain Management : epidural continuous infusion or intermittent bolus, e.g., postoperative or labor; local infiltration Ropivacaine Hydrochloride Injection is an amide local anesthetic indicated in adults for the production of local or regional anesthesia for surgery and for acute pain management ( 1 ). Surgical Anesthesia : epidural block for surgery including cesarean section; major nerve block; local infiltration ( 1 ) Acute Pain Management : epidural continuous infusion or intermittent bolus, e.g., postoperative or labor; local infiltration ( 1 )

2 DOSAGE AND ADMINISTRATION • See Table 1 for Dosage Recommendations ( 2.2 ) 2.1 Important Administration Instructions There have been adverse event reports of chondrolysis in patients receiving intra-articular infusions of local anesthetics following arthroscopic and other surgical procedures. Ropivacaine Hydrochloride Injection is not approved for this use [see Warnings and Precautions ( 5.3) ]. The rapid injection of a large volume of local anesthetic solution should be avoided and fractional (incremental) doses should always be used. The smallest dose and concentration required to produce the desired result should be administered. The dose of any local anesthetic administered varies with the anesthetic procedure, the area to be anesthetized, the vascularity of the tissues, the number of neuronal segments to be blocked, the depth of anesthesia and degree of muscle relaxation required, the duration of anesthesia desired, individual tolerance, and the physical condition of the patient. Patients in poor general condition due to aging or other compromising factors such as partial or complete heart conduction block, advanced liver disease or severe renal dysfunction require special attention although regional anesthesia is frequently indicated in these patients. To reduce the risk of potentially serious adverse reactions, attempts should be made to optimize the patient's condition before major blocks are performed, and the dosage should be adjusted accordingly. Use an adequate test dose (3 to 5 mL of a short acting local anesthetic solution containing epinephrine) prior to induction of complete block. This test dose should be repeated if the patient is moved in such a fashion as to have displaced the epidural catheter. Allow adequate time for onset of anesthesia following administration of each test dose. These products are intended for single dose and are free from preservatives. Any solution remaining from an opened container should be discarded promptly. In addition, continuous infusion bottles should not be left in place for more than 24 hours. 2.2 Dosage Recommendations Table 1 Dosage Recommendations Conc Volume Dose Onset Duration mg/mL (%) (%) mL mg min hours SURGICAL ANESTHESIA Lumbar Epidural 5 (0.5%) 15 to 30 75 to 150 15 to 30 2 to 4 Administration 7.5 (0.75%) 15 to 25 113 to 188 10 to 20 3 to 5 Surgery 10 (1%) 15 to 20 150 to 200 10 to 20 4 to 6 Lumbar Epidural 5 (0.5%) 20 to 30 100 to 150 15 to 25 2 to 4 Administration 7.5 (0.75%) 15 to 20 113 to150 10 to 20 3 to 5 Cesarean Section Thoracic Epidural 5 (0.5%) 5 to 15 25 to 75 10 to 20 n/a* Administration 7.5 (0.75%) 5 to 15 38 to 113 10 to 20 n/a* Surgery Major Nerve Block † 5 (0.5%) 35 to 50 175 to 250 15 to 30 5 to 8 (e.g., brachial plexus block) 7.5 (0.75%) 10 to 40 75 to 300 10 to 25 6 to 10 Field Block (e.g., minor nerve blocks and infiltration) 5 (0.5%) 1 to 40 5 to 200 1 to 15 2 to 6 LABOR PAIN MANAGEMENT Lumbar Epidural Administration Initial Dose 2 (0.2%) 10 to 20 20 to 40 10 to 15 0.5 to 1.5 Continuous Infusion ‡ 2 (0.2%) 6 to 14 mL/h 12 to 28 mg/h n/a* n/a* Incremental injections (top-up) ‡ 2 (0.2%) 10 to 15 mL/h 20 to 30 mg/h n/a* n/a* POST OPERATIVE PAIN MANAGEMENT Lumbar Epidural Administration Continuous Infusion § 2 (0.2%) 6 to 14 mL/h 12 to 28 mg/h n/a* n/a* Thoracic Epidural Administration 2 (0.2%) 6 to 14 mL/h 12 to 28 mg/h n/a* n/a* Continuous Infusion§ Infiltration 2 (0.2%) 1 to 100 2 to 200 1 to 5 2 to 6 (e.g., minor nerve block) 5 (0.5%) 1 to 40 5 to 200 1 to 5 2 to 6 * = Not Applicable † = The dose for a major nerve block must be adjusted according to site of administration and patient status. Supraclavicular brachial plexus blocks may be associated with a higher frequency of serious adverse reactions, regardless of the local anesthetic used [see Warnings and Precautions ( 5.7 )]. ‡ = Median dose of 21 mg per hour was administered by continuous infusion or by incremental injections (top-ups) over a median delivery time of 5.5 hours. § = Cumula …

3 DOSAGE FORMS AND STRENGTHS Ropivacaine hydrochloride injection, USP is a clear, colorless, preservative-free solution available as: Ropivacaine Hydrochloride Injection, USP Single-Dose Vials 0.2%, 40 mg per 20 mL (2 mg/mL), in 20 mL single-dose vial 0.5%, 100 mg per 20 mL (5 mg/mL), 20 mL single-dose vial 0.5%, 150 mg per 30 mL (5 mg/mL), 30 mL single-dose vial 0.75%, 150 mg per 20 mL (7.5 mg/mL), 20 mL single-dose vial 1%, 100 mg per 10 mL (10 mg/mL), 10 mL single-dose vial 1%, 200 mg per 20 mL (10 mg/mL), 20 mL single-dose vial Ropivacaine Hydrochloride Injection, USP Single-Dose Infusion Bottles 0.2%, 200 mg per 100 mL (2 mg/mL), 100 mL single-dose infusion bottle Injection: 2 mg/mL (0.2%), 5 mg/mL (0.5%), 7.5 mg/mL (0.75%) or 10 mg/mL (1%) in single-dose vials ( 3 ) Injection: 2 mg/mL (0.2%) in single-dose infusion bottles ( 3 )

4 CONTRAINDICATIONS Ropivacaine Hydrochloride Injection is contraindicated in patients with a known hypersensitivity to ropivacaine or to any local anesthetic agent of the amide type. History of hypersensitivity to local anesthetics of the amide type. ( 4 )

6 ADVERSE REACTIONS Reactions to ropivacaine are characteristic of those associated with other amide-type local anesthetics. A major cause of adverse reactions to this group of drugs may be associated with excessive plasma levels, which may be due to overdosage, unintentional intravascular injection or slow metabolic degradation. The reported adverse events are derived from clinical studies conducted in the U.S. and other countries. The reference drug was usually bupivacaine. The studies used a variety of premedications, sedatives, and surgical procedures of varying length. A total of 3,988 patients have been exposed to ropivacaine hydrochloride injection at concentrations up to 1% in clinical trials. Each patient was counted once for each type of adverse event. Because clinical trials are conducted under widely conditions, adverse reactions 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. Incidence ≥ 5% For the indications of epidural administration in surgery, cesarean section, postoperative pain management, peripheral nerve block, and local infiltration, the following treatment-emergent adverse events were reported with an incidence of ≥ 5% in all clinical studies (N=3988): hypotension (37%), nausea (24.8%), vomiting (11.6%), bradycardia (9.3%), fever (9.2%), pain (8%), postoperative complications (7.1%), anemia (6.1%), paresthesia (5.6%), headache (5.1%), pruritus (5.1%), and back pain (5%). Incidence 1 to 5% Urinary retention, dizziness, rigors, hypertension, tachycardia, anxiety, oliguria, hypoesthesia, chest pain, hypokalemia, dyspnea, cramps, and urinary tract infection. Incidence in Controlled Clinical Trials The reported adverse events are derived from controlled clinical studies with ropivacaine hydrochloride injection (concentrations ranged from 0.125% to 1% for ropivacaine hydrochloride injection and 0.25% to 0.75% for bupivacaine) in the U.S. and other countries involving 3,094 patients. Table 2 and Table 3 list adverse events (number and percentage) that occurred in at least 1% of ropivacaine hydrochloride injection-treated patients in these studies. The majority of patients receiving concentrations higher than 5 mg/mL (0.5%) were treated with ropivacaine hydrochloride injection. Table 2 Adverse Events Reported in ≥1% of Adult Patients Receiving Regional or Local Anesthesia (Surgery, Labor, Cesarean Section, Postoperative Pain Management, Peripheral Nerve Block and Local Infiltration) Adverse Reaction Ropivacaine Hydrochloride Injection total N = 1661 Bupivacaine total N = 1433 N (%) N (%) Hypotension 536 (32.3) 408 (28.5) Nausea 283 (17) 207 (14.4) Vomiting 117 (7) 88 (6.1) Bradycardia 96 (5.8) 73 (5.1) Headache 84 (5.1) 68 (4.7) Paresthesia 82 (4.9) 57 (4) Back pain 73 (4.4) 75 (5.2) Pain 71 (4.3) 71 (5) Pruritus 63 (3.8) 40 (2.8) Fever 61 (3.7) 37 (2.6) Dizziness 42 (2.5) 23 (1.6) Rigors (Chills) 42 (2.5) 24 (1.7) Postoperative complications 41 (2.5) 44 (3.1) Hypoesthesia 27 (1.6) 24 (1.7) Urinary retention 23 (1.4) 20 (1.4) Progression of labor poor/failed 23 (1.4) 22 (1.5) Anxiety 21 (1.3) 11 (0.8) Breast disorder, breast-feeding 21 (1.3) 12 (0.8) Rhinitis 18 (1.1) 13 (0.9) Table 3 Adverse Events Reported in ≥1% of Fetuses or Neonates of Mothers Who Received Regional Anesthesia (Cesarean Section and Labor Studies) Adverse Reaction Ropivacaine Hydrochloride Injection total N = 639 Bupivacaine total N = 573 N (%) N (%) Fetal bradycardia 77 (12.1) 68 (11.9) Neonatal jaundice 49 (7.7) 47 (8.2) Neonatal complications-NOS 42 (6.6) 38 (6.6) Apgar score low 18 (2.8) 14 (2.4) Neonatal respiratory disorder 17 (2.7) 18 (3.1) Neonatal tachypnea 14 (2.2) 15 (2.6) Neonatal fever 13 (2) 14 (2.4) Fetal tachycardia 13 (2) 12 (2.1) Fetal distress 11 (1.7) 10 (1.7) Neonatal infection 10 (1.6) 8 (1.4) Neonatal hypoglycemia 8 (1.3) 16 (2.8) Incidence 38.5°C. This occurred more frequently at doses of rop …

7 DRUG INTERACTIONS Patients who are administered local anesthetics are at increased risk of developing methemoglobinemia when concurrently exposed to the following drugs, which could include other local anesthetics [see Warnings and Precautions (5.4) ] : Examples of Drugs Associated with Methemoglobinemia Class Examples Nitrates/Nitrites nitric oxide, nitroglycerin, nitroprusside, nitrous oxide Local anesthetics articaine, benzocaine, bupivacaine, lidocaine, mepivacaine, prilocaine, procaine, ropivacaine, tetracaine Antineoplastic agents cyclophosphamide, flutamide, hydroxyurea, ifosfamide, rasburicase Antibiotics dapsone, nitrofurantoin, para-aminosalicylic acid, sulfonamides Antimalarials chloroquine, primaquine Anticonvulsants Phenobarbital, phenytoin, sodium valproate Other drugs acetaminophen, metoclopramide, quinine, sulfasalazine Ropivacaine hydrochloride injection should be used with caution in patients receiving other local anesthetics or agents structurally related to amide-type local anesthetics, since the toxic effects of these drugs are additive. Cytochrome P4501A2 is involved in the formation of 3-hydroxy ropivacaine, the major metabolite. In vivo , the plasma clearance of ropivacaine was reduced by 70% during coadministration of fluvoxamine (25 mg bid for 2 days), a selective and potent CYP1A2 inhibitor. Thus strong inhibitors of cytochrome P4501A2, such as fluvoxamine, given concomitantly during administration of ropivacaine hydrochloride injection, can interact with ropivacaine hydrochloride injection leading to increased ropivacaine plasma levels. Caution should be exercised when CYP1A2 inhibitors are coadministered. Possible interactions with drugs known to be metabolized by CYP1A2 via competitive inhibition such as theophylline and imipramine may also occur. Coadministration of a selective and potent inhibitor of CYP3A4, ketoconazole (100 mg bid for 2 days with ropivacaine infusion administered 1 hour after ketoconazole) caused a 15% reduction in in vivo plasma clearance of ropivacaine. Specific trials studying the interaction between ropivacaine and class III antiarrhythmic drugs (e.g., amiodarone) have not been performed, but caution is advised [see Warnings and Precautions (5.13) ] . • Agents structurally related to amide-type local anesthetics: Concurrent use may cause additive effects. ( 7 )

8 USE IN SPECIFIC POPULATIONS 8.1 Pregnancy Risk Summary There are no available human data on use of ropivacaine hydrochloride Injection in pregnant women to evaluate a drug-associated risk of major birth defects, miscarriage, or other adverse maternal or fetal outcomes. Local anesthetics may cause varying degrees of toxicity to the mother and fetus and adverse reactions include alterations of the central nervous system, peripheral vascular tone, and cardiac function (see Clinical Considerations ) . No teratogenicity was observed at doses up to 0.3 times the maximum recommended human dose of 770 mg/24 hours for epidural use, and equal to the MRHD of 250 mg for nerve block use, based on body surface area (BSA) comparisons and a 60 kg human weight (see Animal data ) . The estimated background risk of major birth defects and miscarriage for the indicated population is unknown. All pregnancies have a background risk of birth defect, loss, or other adverse outcomes. In the U. S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2% to 4% and 15% to 20%, respectively. Clinical Considerations Labor or Delivery Local anesthetics, including ropivacaine, rapidly cross the placenta, and when used for epidural block can cause varying degrees of maternal, fetal, and neonatal toxicity [see Clinical Pharmacology (12) ] . The incidence and degree of toxicity depend upon the procedure performed, the type and amount of drug used, and the technique of drug administration. Adverse reactions in the parturient, fetus and neonate involve alterations of the central nervous system, peripheral vascular tone and cardiac function. Maternal Adverse reactions Maternal hypotension has resulted from regional anesthesia. Local anesthetics produce vasodilation by blocking sympathetic nerves. Therefore, during treatment of systemic toxicity, maternal hypotension or fetal bradycardia following regional block, the parturient should be maintained in the left lateral decubitus position if possible, or manual displacement of the uterus off the great vessels be accomplished. Elevating the patient's legs will also help prevent decreases in blood pressure. The fetal heart rate also should be monitored continuously, and electronic fetal monitoring is highly advisable. Data Animal data No malformations were reported in embryo-fetal development toxicity studies conducted in pregnant New Zealand white rabbits and Sprague-Dawley rats. During gestation days 6 to 18, rabbits received daily subcutaneous doses of ropivacaine at 1.3, 4.2, or 13 mg/kg/day (equivalent to 0.03, 0.10, and 0.33 times the maximum recommended human dose (MRHD) of 770 mg/24 hours, respectively, and 0.10, 0.32, and 1.0 times the MRHD of 250 mg for nerve block use, respectively based on body surface area (BSA) comparisons and a 60 kg human weight). Rats received daily subcutaneous doses of 5.3, 11, and 26 mg/kg/day (equivalent to 0.07, 0.14, and 0.33 times the MRHD for epidural use, respectively, and 0.21, 0.43, and 1.0 times the MRHD for nerve block use, respectively, based on BSA comparisons) during GD 6 to 15. No treatment-related effects on late fetal development, parturition, litter size, lactation, neonatal viability, or growth of the offspring were reported in a prenatal and postnatal reproductive and development toxicity study; however functional endpoints were not evaluated. Female rats were dosed daily subcutaneously from GD 15 to Lactation Day 20 at doses of 5.3, 11, and 26 mg/kg/day (equivalent to 0.07, 0.1, and 0.3 times the MRHD for epidural use, respectively, and 0.21, 0.43, and 1.0 times the MRHD for nerve block use, respectively), with maternal toxicity exhibited at the high dose. No adverse effects in physical developmental milestones or in behavioral tests were reported in a 2-generational reproduction study, in which rats received daily subcutaneous doses of 6.3, 12, and 23 mg/kg/day (equivalent to 0.08, 0.15 …

12.1 Mechanism of Action Ropivacaine is a member of the amino amide class of local anesthetics and is supplied as the pure S-(-)-enantiomer. Local anesthetics block the generation and the conduction of nerve impulses, presumably by increasing the threshold for electrical excitation in the nerve, by slowing the propagation of the nerve impulse, and by reducing the rate of rise of the action potential. In general, the progression of anesthesia is related to the diameter, myelination and conduction velocity of affected nerve fibers. Clinically, the order of loss of nerve function is as follows: (1) pain, (2) temperature, (3) touch, (4) proprioception, and (5) skeletal muscle tone.

11 DESCRIPTION Ropivacaine Hydrochloride Injection, USP is a sterile, isotonic solution that contains ropivacaine hydrochloride as the active pharmaceutical ingredient. Ropivacaine hydrochloride is a member of the amino amide class of local anesthetics. Ropivacaine Hydrochloride Injection, USP is administered parenterally by for infiltration, epidural, and nerve block. Ropivacaine hydrochloride is chemically described as S-(-)-1-propyl-2’,6’-pipecoloxylidide hydrochloride monohydrate. The drug substance is a white crystalline powder, with the following structural formula: C 17 H 26 N 2 O•HCl•H 2 O M.W. 328.88 At 25°C ropivacaine hydrochloride has a solubility of 53.8 mg/mL in water, a distribution ratio between n -octanol and phosphate buffer at pH 7.4 of 14:1 and a pKa of 8.07 in 0.1 M KCl solution. The pKa of ropivacaine is approximately the same as bupivacaine (8.1) and is similar to that of mepivacaine (7.7). However, ropivacaine has an intermediate degree of lipid solubility compared to bupivacaine and mepivacaine. Ropivacaine Hydrochloride Injection, USP is a clear, colorless, and preservative-free solution. Each mL contains 2.1 mg, 5.3 mg, 7.9 mg or 10.6 mg ropivacaine hydrochloride monohydrate, USP (equivalent to 2 mg, 5 mg, 7.5 mg or 10 mg of ropivacaine hydrochloride anhydrous), and 8.6 mg, 8 mg, 7.5 mg or 7.1 mg of sodium chloride, USP; respectively, and sodium hydroxide, NF and hydrochloric acid, NF as pH adjusters, in water for injection, USP. The pH is adjusted between 4.0 to 6.0. The specific gravity of Ropivacaine Hydrochloride Injection, USP solutions range from 1.002 to 1.005 at 25°C. Structural Formula

10 OVERDOSAGE Acute emergencies from local anesthetics are generally related to high plasma levels encountered, or large doses administered, during therapeutic use of local anesthetics or to unintended subarachnoid or intravascular injection of local anesthetic solution [see Adverse Reactions ( 6 ) and Warnings and Precautions ( 5.1 , 5.2 , 5.6 )]. 10.1 Treatment Therapy with ropivacaine hydrochloride injection should be discontinued at the first sign of toxicity. No specific information is available for the treatment of toxicity with ropivacaine hydrochloride injection; therefore, treatment should be symptomatic and supportive. The first consideration is prevention, best accomplished by incremental injection of ropivacaine hydrochloride injection, careful and constant monitoring of cardiovascular and respiratory vital signs and the patient’s state of consciousness after each local anesthetic and during continuous infusion. At the first sign of change in mental status, oxygen should be administered. The first step in the management of systemic toxic reactions, as well as underventilation or apnea due to unintentional subarachnoid injection of drug solution, consists of immediate attention to the establishment and maintenance of a patent airway and effective assisted or controlled ventilation with 100% oxygen with a delivery system capable of permitting immediate positive airway pressure by mask. Circulation should be assisted as necessary. This may prevent convulsions if they have not already occurred. If necessary, use drugs to control convulsions. Intravenous barbiturates, anticonvulsant agents, or muscle relaxants should only be administered by those familiar with their use. Immediately after the institution of these ventilatory measures, the adequacy of the circulation should be evaluated. Supportive treatment of circulatory depression may require administration of intravenous fluids, and, when appropriate, a vasopressor dictated by the clinical situation (such as ephedrine or epinephrine to enhance myocardial contractile force). Should cardiac arrest occur, prolonged resuscitative efforts may be required to improve the probability of a successful outcome. The mean dosages of ropivacaine producing seizures, after intravenous infusion in dogs, nonpregnant and pregnant sheep were 4.9, 6.1 and 5.9 mg/kg, respectively. These doses were associated with peak arterial total plasma concentrations of 11.4, 4.3 and 5 mcg/mL, respectively. In human volunteers given intravenous ropivacaine hydrochloride injection, the mean (min-max) maximum tolerated total and free arterial plasma concentrations were 4.3 (3.4 to 5.3) and 0.6 (0.3 to 0.9) mcg/mL respectively, at which time moderate CNS symptoms (muscle twitching) were noted. Clinical data from patients experiencing local anesthetic induced convulsions demonstrated rapid development of hypoxia, hypercarbia and acidosis within a minute of the onset of convulsions. These observations suggest that oxygen consumption and carbon dioxide production are greatly increased during local anesthetic convulsions and emphasize the importance of immediate and effective ventilation with oxygen which may avoid cardiac arrest. If difficulty is encountered in the maintenance of a patent airway or if prolonged ventilatory support (assisted or controlled) is indicated, endotracheal intubation, employing drugs and techniques familiar to the clinician, may be indicated after initial administration of oxygen by mask. The supine position is dangerous in pregnant women at term because of aortocaval compression by the gravid uterus. Therefore, during treatment of systemic toxicity, maternal hypotension or fetal bradycardia following regional block, the parturient should be maintained in the left lateral decubitus position if possible, or manual displacement of the uterus off the great vessels should be accomplished. Resuscitation of obstetrical patients may take longer than resuscitation of nonpregnant patients a …

16 HOW SUPPLIED/STORAGE AND HANDLING Ropivacaine Hydrochloride Injection, USP is a clear, colorless, and preservative-free solution and is supplied as follows: Ropivacaine Hydrochloride Injection, USP Single-Dose Vials NDC Ropivacaine Hydrochloride Injection, USP 0.2% (2 mg per mL) Package Factor 71288- 732 -11 20 mg per 10 mL Single-Dose Vial 25 vials per carton 71288- 733 -21 40 mg per 20 mL Single-Dose Vial 25 vials per carton NDC Ropivacaine Hydrochloride Injection, USP 0.5% (5 mg per mL) Package Factor 71288- 734 -21 100 mg per 20 mL Single-Dose Vial 25 vials per carton 71288- 735 -31 150 mg per 30 mL Single-Dose Vial 25 vials per carton NDC Ropivacaine Hydrochloride Injection, USP 0.75% (7.5 mg per mL) Package Factor 71288- 736 -21 150 mg per 20 mL Single-Dose Vial 25 vials per carton NDC Ropivacaine Hydrochloride Injection, USP 1% (10 mg per mL) Package Factor 71288- 737 -11 100 mg per 10 mL Single-Dose Vial 25 vials per carton 71288- 738 -21 200 mg per 20 mL Single-Dose Vial 25 vials per carton Discard unused portion. Storage Solutions should be stored at 20° to 25°C (68° to 77°F); excursions permitted to 15° to 30°C (59° to 86°F). [See USP Controlled Room Temperature.] Sterile, Nonpyrogenic, Preservative-free. The container closure is not made with natural rubber latex.