Acetaminophen

Dosage and Administration (2.5) 11/2016 Dosage and Administration (2.4) 01/2017

1 INDICATIONS AND USAGE Acetaminophen Injection is indicated for the management of mild to moderate pain in adult and pediatric patients 2 years and older the management of moderate to severe pain with adjunctive opioid analgesics in adult and pediatric patients 2 years and older the reduction of fever in adult and pediatric patients 2 years and older. Acetaminophen Injection is indicated for the Management of mild to moderate pain in adult and pediatric patients 2 years and older ( 1 ) Management of moderate to severe pain with adjunctive opioid analgesics in adult and pediatric patients 2 years and older ( 1 ) Reduction of fever in adult and pediatric patients 2 years and older ( 1 )

2 DOSAGE AND ADMINISTRATION Acetaminophen Injection may be given as a single or repeated dose. ( 2.1 ) Acetaminophen Injection should be administered only as a 15-minute intravenous infusion. ( 2.5 ) Adults and Adolescents Weighing 50 kg and Over: 1,000 mg every 6 hours or 650 mg every 4 hours to a maximum of 4,000 mg per day. Minimum dosing interval of 4 hours. ( 2.2 ) Adults and Adolescents Weighing Under 50 kg: 15 mg/kg every 6 hours or 12.5 mg/kg every 4 hours to a maximum of 75 mg/kg per day. Minimum dosing interval of 4 hours. ( 2.2 ) Children: Children 2 to 12 years of age: 15 mg/kg every 6 hours or 12.5 mg/kg every 4 hours to a maximum of 75 mg/kg per day. Minimum dosing interval of 4 hours. ( 2.3 ) Neonates and Infants: Neonates including premature neonates born at greater than or equal to 32 weeks gestational age to 28 days chronological age, 12.5 mg/kg every 6 hours to a maximum of 50 mg/kg per day. Minimum dosing interval of 6 hours. ( 2.4 ) Infants (29 days to 2 years of age): 15 mg/kg every 6 hours to a maximum of 60 mg/kg per day. Minimum dosing interval of 6 hours. ( 2.4 ) 2.1 Important Dosing and Administration Information DO NOT ADD SUPPLEMENTARY MEDICATION. Aseptic technique is required. Before use, perform the following checks: Read the label. Ensure solution is the one ordered and is within the expiration date. Inspect the solution in good light for cloudiness, haze or particulate matter; check the container for leakage or damage. Any container which is suspect should not be used. Use only if solution is clear and container and seals are intact. Single-dose plastic container. Discard unused portion. Consult Package Insert for complete product information. DO NOT USE PLASTIC CONTAINER IN SERIES CONNECTION. Acetaminophen Injection may be given as a single or repeated dose for the treatment of acute pain or fever. No dose adjustment is required when converting between oral acetaminophen and Acetaminophen Injection dosing in adults and adolescents who weigh 50 kg and above. Calculated maximum daily dose of acetaminophen is based on all routes of administration (i.e. intravenous, oral, and rectal) and all products containing acetaminophen. Exceeding the maximum mg/kg daily dose of acetaminophen as described in Tables 1-3 may result in hepatic injury, including the risk of liver failure and death. To avoid the risk of overdose, ensure that the total amount of acetaminophen from all routes and from all sources does not exceed the maximum recommended dose. 2.2 Recommended Dosage: Adults and Adolescents Adults and adolescents weighing 50 kg and over: the recommended dosage of Acetaminophen Injection is 1,000 mg every 6 hours or 650 mg every 4 hours, with a maximum single dose of Acetaminophen Injection of 1,000 mg, a minimum dosing interval of 4 hours, and a maximum daily dose of acetaminophen of 4,000 mg per day (includes all routes of administration and all acetaminophen-containing products including combination products). Adults and adolescents weighing under 50 kg: the recommended dosage of Acetaminophen Injection is 15 mg/kg every 6 hours or 12.5 mg/kg every 4 hours, with a maximum single dose of Acetaminophen Injection of 15 mg/kg, a minimum dosing interval of 4 hours, and a maximum daily dose of acetaminophen of 75 mg/kg per day (includes all routes of administration and all acetaminophen-containing products including combination products). Table 1. Dosing for Adults and Adolescents Age group Dose given every 4 hours Dose given every 6 hours Maximum single dose Maximum total daily dose of acetaminophen (by all routes) Adults and adolescents (13 years and older) weighing greater than or equal to 50 kg 650 mg 1,000 mg 1,000 mg 4,000 mg in 24 hours Adults and adolescents (13 years and older) weighing less than 50 kg 12.5 mg/kg 15 mg/kg 15 mg/kg (up to 750 mg) 75 mg/kg in 24 hours (up to 3,750 mg) 2.3 Recommended Dosage: Children Children 2 to 12 years of age: the recommended dosage of Acetaminophen Injection is …

3 DOSAGE FORMS AND STRENGTHS Acetaminophen Injection is a sterile, clear, colorless, non-pyrogenic, preservative free, isotonic formulation of acetaminophen available as: 1,000 mg acetaminophen in 100 mL (10 mg/mL) injection for intravenous infusion 500 mg acetaminophen in 50 mL (10 mg/mL) injection for intravenous infusion 1,000 mg acetaminophen in 100 mL (10 mg/mL) injection for intravenous infusion ( 3 ) 500 mg acetaminophen in 50 mL (10 mg/mL) injection for intravenous infusion ( 3 )

4 CONTRAINDICATIONS Acetaminophen is contraindicated: • In patients with known hypersensitivity to acetaminophen or to any of the excipients in the IV formulation. (4) • In patients with severe hepatic impairment or severe active liver disease. (4) 4 CONTRAINDICATIONS Acetaminophen is contraindicated: • in patients with known hypersensitivity to acetaminophen or to any of the excipients in the intravenous formulation. • in patients with severe hepatic impairment or severe active liver disease [see Warnings and Precautions (5.1)].

6 ADVERSE REACTIONS The following serious adverse reactions are discussed elsewhere in the labeling: Hepatic Injury [see Warnings and Precautions (5.1) ] Serious Skin Reactions [see Warnings and Precautions (5.2) ] Allergy and Hypersensitivity [see Warnings and Precautions (5.4) ] The most common adverse reactions (incidence greater than or equal to 5%) in patients treated with Acetaminophen Injection were nausea, vomiting, headache, and insomnia in adult patients; nausea, vomiting, constipation and pruritus in pediatric patients. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact B. Braun Medical Inc. at 1-800-854-6851 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch . 6.1 Clinical Trial Experience Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed cannot be directly compared to rates in other clinical trials and may not reflect the rates observed in practice. Adult Population A total of 1,020 adult patients have received Acetaminophen Injection in clinical trials, including 37.3% (n=380) who received 5 or more doses, and 17.0% (n=173) who received more than 10 doses. Most patients were treated with Acetaminophen Injection 1,000 mg every 6 hours. A total of 13.1% (n=134) received Acetaminophen Injection 650 mg every 4 hours. All adverse reactions that occurred in adult patients treated with either Acetaminophen Injection or placebo in repeated dose, placebo-controlled clinical trials at an incidence greater than or equal to 3% and at a greater frequency than placebo are listed in Table 4. The most common adverse events in adult patients treated with Acetaminophen Injection (incidence greater than or equal to 5% and greater than placebo) were nausea, vomiting, headache, and insomnia. Table 4. Treatment-Emergent Adverse Reactions Occurring in greater than or equal to 3% of Acetaminophen Injection-treated Adult Patients and at a Greater Frequency than Placebo in Placebo-Controlled, Repeated Dose Studies * Pyrexia adverse reaction frequency data is included in order to alert healthcare practitioners that the antipyretic effects of Acetaminophen Injection may mask fever. System Organ Class – Preferred Term Acetaminophen Injection (N=402) n (%) Placebo (N=379) n (%) Gastrointestinal Disorders Nausea Vomiting 138 (34) 62 (15) 119 (31) 42 (11) General Disorders and Administration Site Conditions Pyrexia* 22 (5) 52 (14) Nervous System Disorders Headache 39 (10) 33 (9) Psychiatric Disorders Insomnia 30 (7) 21 (5) Other Adverse Reactions Observed During Clinical Studies of Acetaminophen Injection in Adults The following additional treatment-emergent adverse reactions were reported by adult subjects treated with Acetaminophen Injection in all clinical trials (n=1,020) that occurred with an incidence of at least 1% and at a frequency greater than placebo (n=525). Blood and lymphatic system disorders: anemia General disorders and administration site conditions: fatigue, infusion site pain, edema peripheral Investigations: aspartate aminotransferase increased, breath sounds abnormal Metabolism and nutrition disorders: hypokalemia Musculoskeletal and connective tissue disorders: muscle spasms, trismus Psychiatric disorders: anxiety Respiratory, thoracic and mediastinal disorders : dyspnea Vascular disorders: hypertension, hypotension Pediatric Population A total of 483 pediatric patients (72 neonates, 167 infants, 171 children, and 73 adolescents) have received Acetaminophen Injection in active-controlled (n=250) and open-label clinical trials (n=225), including 43.9% (n=212) who received 5 or more doses and 31.2% (n=153) who received more than 10 doses. Pediatric patients received Acetaminophen Injection doses up to 15 mg/kg on an every 4 hours, every 6 hours, or every 8 hours schedule. The maximum exposure was 7.7, 6.4, 6.8, and 7.1 days in neonates, infants, children, and adolescents, respectively. The most common adverse events (incidence greater than or equal to 5%) in pediatric pa …

7 DRUG INTERACTIONS • Substances that induce or regulate hepatic cytochrome enzyme CYP2E1 may alter the metabolism of acetaminophen and increase its hepatotoxic potential. (7.1) • Chronic oral acetaminophen use at a dose of 4000 mg/day has been shown to cause an increase in international normalized ratio (INR) in some patients who have been stabilized on sodium warfarin as an anticoagulant. (7.2) (7) 7.1 Effects of Other Substances on Acetaminophen Substances that induce or regulate hepatic cytochrome enzyme CYP2E1 may alter the metabolism of acetaminophen and increase its hepatotoxic potential. The clinical consequences of these effects have not been established. Effects of ethanol are complex, because excessive alcohol usage can induce hepatic cytochromes, but ethanol also acts as a competitive inhibitor of the metabolism of acetaminophen. 7.2 Anticoagulants Chronic oral acetaminophen use at a dose of 4000 mg/day has been shown to cause an increase in international normalized ratio (INR) in some patients who have been stabilized on sodium warfarin as an anticoagulant. As no studies have been performed evaluating the short-term use of acetaminophen injection in patients on oral anticoagulants, more frequent assessment of INR may be appropriate in such circumstances.

8 USE IN SPECIFIC POPULATIONS Pediatric Use: The effectiveness of acetaminophen for the treatment of acute pain in pediatric patients younger than 2 years of age has not been established. The safety and effectiveness of acetaminophen in pediatric patients is supported by evidence from adequate and well controlled studies in adults with additional safety and pharmacokinetic data for this age group. ( 8.4 ) Geriatric Use: No overall differences in safety or effectiveness were observed between geriatric and younger subjects. ( 8.5 ) Hepatic Impairment: Acetaminophen is contraindicated in patients with severe hepatic impairment or severe active liver disease and should be used with caution in patients with hepatic impairment or active liver disease. ( 4 , 5.1 , 8.6 ) Renal Impairment: In cases of severe renal impairment, longer dosing intervals and a reduced total daily dose of acetaminophen may be warranted. ( 5.1 , 8.7 ) 8.1 Pregnancy Risk Summary Published epidemiological studies with oral acetaminophen use during pregnancy have not reported a definitive association with acetaminophen use and birth defects, miscarriage, or adverse maternal or fetal outcomes [see Data ] . Animal reproduction studies have not been conducted with IV acetaminophen. Reproductive and developmental studies in rats and mice from the published literature identified adverse events at clinically relevant doses with acetaminophen. Treatment of pregnant rats with doses of acetaminophen approximately equal to the maximum human daily dose (MHDD) showed evidence of fetotoxicity and increases in bone variations in the fetuses. In another study, necrosis was observed in the liver and kidney of both pregnant rats and fetuses at doses approximately equal to the MHDD. In mice and rats treated with acetaminophen at doses within the clinical dosing range, cumulative adverse effects on reproductive capacity were reported. In mice, a reduction in number of litters of the parental mating pair was observed as well as retarded growth, abnormal sperm in their offspring and reduced birth weight in the next generation. In rats, female fertility was decreased following in utero exposure to acetaminophen [see Data ] . The estimated background risk of major birth defects and miscarriages 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 2-4% and 15-20%, respectively. Data Human Data The results from a large population-based prospective cohort, including data from 26,424 women with live born singletons who were exposed to oral acetaminophen during the first trimester, indicate no increased risk for congenital malformations, compared to a control group of unexposed children. The rate of congenital malformations (4.3%) was similar to the rate in the general population. A population-based, case-control study from the National Birth Defects Prevention Study showed that 11,610 children with prenatal exposure to acetaminophen during the first trimester had no increased risk of major birth defects compared to 4,500 children in the control group. Other epidemiological data showed similar results. However, these studies cannot definitely establish the absence of any risk because of methodological limitations, including recall bias. Animal Data Studies in pregnant rats that received oral acetaminophen during organogenesis at doses up to 0.85 times the maximum human daily dose (MHDD = 4 grams/day, based on a body surface area comparison) showed evidence of fetotoxicity (reduced fetal weight and length) and a dose-related increase in bone variations (reduced ossification and rudimentary rib changes). Offspring had no evidence of external, visceral, or skeletal malformations. When pregnant rats received oral acetaminophen throughout gestation at doses of 1.2 times the MHDD ( …

12.1 Mechanism of Action The precise mechanism of the analgesic and antipyretic properties of acetaminophen is not established but is thought to primarily involve central actions.

11 DESCRIPTION Acetaminophen is a non-salicylate antipyretic and non-opioid analgesic agent. Its chemical name is N-acetyl-p-aminophenol. Acetaminophen has a molecular weight of 151.16. Its structural formula is: Acetaminophen Injection is a sterile, clear, colorless, non pyrogenic, isotonic formulation of acetaminophen intended for intravenous infusion. It has a pH of approximately 5.0 and an osmolality of approximately 290 mOsm/kg. Each 100 mL contains 1,000 mg Acetaminophen, USP, 3,800 mg Mannitol, USP, 30 mg Sodium Citrate Dihydrate USP, and Water for Injection, USP qs. Each 50 mL contains 500 mg Acetaminophen, USP, 1,900 mg Mannitol, USP, 15 mg Sodium Citrate Dihydrate USP, and Water for Injection, USP qs. pH is adjusted with glacial acetic acid. Not made with natural rubber latex, PVC or DEHP. acetaminophen chemical structure

10 OVERDOSAGE Clinical Presentation In acute acetaminophen overdosage, dose-dependent, potentially fatal hepatic necrosis is the most serious adverse effect. Renal tubular necrosis, hypoglycemic coma, and thrombocytopenia may also occur. Plasma acetaminophen levels greater than 300 mcg/mL at 4 hours after oral ingestion were associated with hepatic damage in 90% of patients; minimal hepatic damage is anticipated if plasma levels at 4 hours are less than 150 mcg/mL or less than 37.5 mcg/mL at 12 hours after ingestion. Early symptoms following a potentially hepatotoxic overdose may include: nausea, vomiting, diaphoresis, and general malaise. Clinical and laboratory evidence of hepatic toxicity may not be apparent until 48 to 72 hours post-ingestion. Treatment of Overdose If an acetaminophen overdose is suspected, obtain a serum acetaminophen assay as soon as possible, but no sooner than 4 hours following oral ingestion. Obtain liver function studies initially and repeat at 24-hour intervals. Administer the antidote N-acetylcysteine (NAC) as early as possible. As a guide to treatment of acute ingestion, the acetaminophen level can be plotted against time since oral ingestion on a nomogram (Rumack-Matthew). The lower toxic line on the nomogram is equivalent to 150 mcg/mL at 4 hours and 37.5 mcg/mL at 12 hours. If serum level is above the lower line, administer the entire course of NAC treatment. Withhold NAC therapy if the acetaminophen level is below the lower line. For additional information, call a poison control center at 1-800-222-1222.

16 HOW SUPPLIED/STORAGE AND HANDLING Acetaminophen Injection is supplied as follows: Product Code Unit of Sale Strength Unit of Use 434100 NDC 63323-434-00 Package of 20 Single-dose flexible bags 1,000 mg per 100 mL (10 mg per mL) NDC 63323-434-41 100 mL Single-dose flexible bag Do not remove unit from overwrap until ready for use. To open, tear outer wrap at the notch and remove solution bag. After removing the outer wrap, check the container for minute leaks by squeezing the solution bag firmly. If leaks are found, discard the solution because the sterility may be impaired. A small amount of moisture may be present inside the outer wrap. Acetaminophen Injection should be stored at 20°C to 25°C (68° to 77°F); excursions permitted to 15°C to 30°C (59°F to 86°F) [see USP Controlled Room Temperature]. For single use only. The product should be used within 24 hours after opening. Do not refrigerate or freeze. The container is not made with natural rubber latex. Non-PVC, Non-DEHP, Sterile. Manufactured for: Lake Zurich, IL 60047 Made in Norway www.fresenius-kabi.com/us 451659D Fresenius Kabi Logo