Glucagon

6 ADVERSE REACTIONS The following serious adverse reactions are described below and elsewhere in the labeling: Hypertension in patients with Pheochromocytoma [see Contraindications ( 4 ) and Warnings and Precautions ( 5.1 )] Hypoglycemia in Patients with Insulinoma and Glucagonoma [see Contraindications ( 4 ) and Warnings and Precautions ( 5.2 )] Hyperglycemia in Patients with Diabetes Mellitus [see Warnings and Precautions ( 5.3 )] Hypersensitivity and Allergic Reactions; generalized allergic reactions including generalized rash, and in some cases anaphylactic shock with breathing difficulties, and hypotension [see Warnings and Precautions ( 5.5 )] Adverse Reactions from Clinical Trials 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 the rates in clinical trials of another drug and may not reflect the rates observed in practice. In an open-label clinical study of Glucagon for Injection, 29 healthy volunteers received a single dose of 1 mg Glucagon for Injection intramuscularly. Table 1 shows the most common adverse reactions that were not present at baseline and occurred in at least 5% of patients. Table 1: Adverse Reactions in Healthy Volunteers Who Received Glucagon for Injection, 1 mg Administered Intramuscularly (N=29) % of Patients Vomiting 17 Nausea 7 Adverse Reactions from the Literature and Other Clinical Studies The following adverse reactions have been identified from the literature and clinical studies with the use of glucagon. Therefore, it is not possible to reliably estimate their frequency. Nausea and vomiting occurred with doses above 1 mg administered by rapid intravenous injection (within 1 to 2 seconds) . Doses above 1 mg are not recommended for intravenous use [see Dosage and Administration ( 2.1 )]. Hypotension was reported up to 2 hours after administration in patients receiving glucagon as premedication for upper GI endoscopy procedures. A temporary increase in both blood pressure and pulse rate occurred following the administration of glucagon. Patients taking beta-blockers experienced a temporary increase in both pulse and blood pressure that was greater than normal [see Drug Interactions ( 7 )] . Other adverse reactions included hypoglycemia and hypoglycemic coma, as described in postmarketing reports. Patients taking indomethacin may be more likely to experience hypoglycemia following glucagon administration [see Drug Interactions ( 7 )] . Adverse reactions seen with glucagon are transient changes in blood pressure, increase in heart rate, hypersensitivity reactions, nausea and vomiting, and hypoglycemia ( 6 ) To report SUSPECTED ADVERSE REACTIONS, contact Fresenius Kabi USA, LLC at 1-800-551-7176 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.

4 CONTRAINDICATIONS Glucagon for Injection is contraindicated in patients with: Pheochromocytoma [see Warnings and Precautions ( 5.1 )] because of the risk of increased blood pressure Insulinoma [see Warnings and Precautions ( 5.2 )] because of the risk of hypoglycemia Glucagonoma [see Warnings and Precautions ( 5.2 )] because of the risk of hypoglycemia Pheochromocytoma ( 4 , 5.1 ) Insulinoma ( 4 , 5.2 ) Glucagonoma ( 4 , 5.2 )

11 DESCRIPTION Glucagon for Injection, for intravenous or intramuscular use, is a gastrointestinal motility inhibitor that is produced by solid phase peptide synthesis. Glucagon is a single-chain polypeptide containing 29 amino acid residues. The chemical structure of the glucagon polypeptide is identical to human glucagon and to glucagon extracted from beef and pork pancreas. The structure of glucagon is: C 153 H 225 N 43 O 49 S Molecular Weight = 3483 Glucagon for Injection is a sterile, lyophilized white powder in a 3 mL vial. The reconstituted solution contains 1 mg of glucagon as hydrochloride per mL and lactose monohydrate (107 mg). Glucagon for Injection is supplied at pH 2.5 to 3.5 and is soluble in water. structure

2 DOSAGE AND ADMINISTRATION Reconstitute lyophilized powder with Sterile Water for Injection before use ( 2.2 , 2.3 ) Determine dose based on diagnostic procedure, route of administration and procedure duration ( 2.1 ): To inhibit stomach and small bowel motility the dose is 0.2 mg to 0.5 mg given intravenously or 1 mg given intramuscularly To inhibit colon motility the dose is 0.5 mg to 0.75 mg given intravenously or 1 mg to 2 mg given intramuscularly 2.1 Recommended Dose Determine the dose based on the type of diagnostic procedure, the route of administration and expected procedure duration [see Clinical Pharmacology ( 12.2 )] . The usual dose to inhibit movement of the: Stomach and small bowel is 0.2 mg to 0.5 mg given intravenously or 1 mg given intramuscularly. Colon is 0.5 mg to 0.75 mg given intravenously or 1 mg to 2 mg given intramuscularly. Bolus doses above 1 mg administered intravenously have caused nausea and vomiting and are not recommended [see Adverse Reactions ( 6 )] . 2.2 Reconstitution of the Lyophilized Powder Glucagon for Injection is a lyophilized powder, which requires reconstitution with Sterile Water for Injection prior to intravenous or intramuscular use. Using a syringe, withdraw 1 mL of Sterile Water for Injection and inject into the vial containing Glucagon for Injection lyophilized powder. Shake the vial gently until the powder is completely dissolved and no particles remain in the reconstituted solution. Visually inspect the reconstituted solution for particulate matter and discoloration prior to administration. The reconstituted solution should be clear and of water-like consistency. Discard the reconstituted solution if there are signs of gel formation or particles. The reconstituted solution has a concentration of approximately 1 mg of glucagon per mL. Use the reconstituted glucagon immediately after reconstitution. 2.3 Important Administration Instructions Glucagon for Injection must be administered by medical personnel. The timing of administration of Glucagon for Injection depends upon the organ under examination and route of administration [see Clinical Pharmacology ( 12.2 )] . If given intravenously, administer Glucagon for Injection as a bolus over a time period of 1 minute. Discard any unused portion. After the end of the diagnostic procedure, give oral carbohydrates to patients who have been fasting, if this is compatible with the diagnostic procedure.

1 INDICATIONS AND USAGE Glucagon for Injection is indicated for use as a diagnostic aid during radiologic examinations to temporarily inhibit movement of the gastrointestinal tract. Limitations of Use : Glucagon for Injection is not indicated for the emergency treatment of hypoglycemia because it is not packaged with a syringe and diluent necessary for rapid preparation and administration during an emergency outside of a healthcare facility. Glucagon for Injection is a gastrointestinal motility inhibitor indicated for use as a diagnostic aid during radiologic examinations to temporarily inhibit movement of the gastrointestinal (GI) tract ( 1 ) Limitations of Use: Glucagon for Injection is not indicated for the emergency treatment of hypoglycemia ( 1 )

10 OVERDOSAGE If overdosage occurs, the patient may experience nausea, vomiting, inhibition of GI tract motility, increase in blood pressure and heart rate, and decrease in serum potassium. In case of suspected overdosage, monitor and correct hypokalemia. If the patient develops a severe increase in blood pressure, phentolamine mesylate may be effective in lowering blood pressure for the short time that control would be needed.

7 DRUG INTERACTIONS Table 2 includes clinically significant drug interactions with Glucagon for Injection. Table 2: Clinically Significant Drug Interactions with Glucagon for Injection Beta-Blockers Clinical Impact: The concomitant use of beta-blockers and Glucagon for Injection may increase the risk of a temporary increase in heart rate and blood pressure. Intervention: The increase in blood pressure and heart rate may require therapy in patients with coronary artery disease. Insulin Clinical Impact: Insulin reacts antagonistically towards glucagon. Intervention: Monitor blood glucose when Glucagon for Injection is used as a diagnostic aid in diabetes patients. Indomethacin Clinical Impact: The concomitant use of indomethacin and Glucagon for Injection may lead to hypoglycemia. Intervention: Monitor blood glucose levels during glucagon treatment of patients taking indomethacin. Anticholinergic Drugs Clinical Impact: The concomitant use of anticholinergic drugs and Glucagon for Injection increase the risk of gastrointestinal adverse reactions due to additive effects on inhibition of gastrointestinal motility. Intervention: Concomitant use is not recommended. Warfarin Clinical Impact: Glucagon may increase the anticoagulant effect of warfarin. Intervention: Monitor patients for unusual bruising or bleeding, as adjustments in warfarin dosage may be required. Beta-blockers : May cause a greater increase in both heart rate and blood pressure ( 7 ) Insulin : Reacts antagonistically towards glucagon; monitor glucose ( 7 ) Indomethacin : May produce hypoglycemia; monitor glucose ( 7 ) Anticholinergic Drugs : Concomitant use not recommended due to increased gastrointestinal adverse reactions ( 7 ) Warfarin : May increase anticoagulant effect of warfarin; may require an adjustment in warfarin dosage ( 7 )

12 CLINICAL PHARMACOLOGY 12.1 Mechanism of Action Extra hepatic effects of glucagon include relaxation of the smooth muscle of the stomach, small bowel, and colon. 12.2 Pharmacodynamics Table 3 displays the pharmacodynamics properties of Glucagon for Injection as a diagnostic aid during radiologic examination. Table 3: Pharmacodynamic Properties of Glucagon for Injection as a Diagnostic Aid Route of Administration Dose a Time of Onset of Action for GI Smooth Muscle Relaxation Duration of Smooth Muscle Relaxation Intravenous 0.25 to 0.5 mg 45 seconds 9 to 17 minutes Intramuscular 1 mg 8 to 10 minutes 12 to 27 minutes 2 mg 4 to 7 minutes 21 to 32 minutes a Select from these doses based on type of diagnostic procedure, route of administration and procedure duration. 12.3 Pharmacokinetics Absorption Following intramuscular administration of 1 mg dose, the maximum plasma glucagon concentrations of 3391 pg/mL were attained approximately 10 minutes after dosing. Metabolism The mean apparent half-life of glucagon was 26 minutes after intramuscular administration. Glucagon is degraded in the liver, kidney, and plasma.

12.1 Mechanism of Action Extra hepatic effects of glucagon include relaxation of the smooth muscle of the stomach, small bowel, and colon.

12.2 Pharmacodynamics Table 3 displays the pharmacodynamics properties of Glucagon for Injection as a diagnostic aid during radiologic examination. Table 3: Pharmacodynamic Properties of Glucagon for Injection as a Diagnostic Aid Route of Administration Dose a Time of Onset of Action for GI Smooth Muscle Relaxation Duration of Smooth Muscle Relaxation Intravenous 0.25 to 0.5 mg 45 seconds 9 to 17 minutes Intramuscular 1 mg 8 to 10 minutes 12 to 27 minutes 2 mg 4 to 7 minutes 21 to 32 minutes a Select from these doses based on type of diagnostic procedure, route of administration and procedure duration.

12.3 Pharmacokinetics Absorption Following intramuscular administration of 1 mg dose, the maximum plasma glucagon concentrations of 3391 pg/mL were attained approximately 10 minutes after dosing. Metabolism The mean apparent half-life of glucagon was 26 minutes after intramuscular administration. Glucagon is degraded in the liver, kidney, and plasma.

20220401

6

3 DOSAGE FORMS AND STRENGTHS For injection: 1 mg of lyophilized powder in single dose vial for reconstitution. For Injection: 1 mg lyophilized powder in single dose vial for reconstitution ( 3 )

Glucagon Glucagon GLUCAGON HYDROCHLORIDE GLUCAGON LACTOSE MONOHYDRATE HYDROCHLORIC ACID SODIUM HYDROXIDE Glucagon Glucagon Glucagon Glucagon GLUCAGON HYDROCHLORIDE GLUCAGON LACTOSE MONOHYDRATE HYDROCHLORIC ACID SODIUM HYDROXIDE STERILE WATER Water WATER WATER

13.1 Carcinogenesis, Mutagenesis, Impairment of Fertility Carcinogenesis Long term studies in animals to evaluate carcinogenic potential have not been performed. Mutagenesis Synthetic glucagon was negative in the bacterial reverse mutation assay (Ames test). The clastogenic potential of synthetic glucagon in the Chinese Hamster Ovary (CHO) assay was positive in the absence of metabolic activation. Doses of 100 and 200 mg/kg of glucagon of both pancreatic and recombinant origins gave slightly higher incidences of micronucleus formation in male mice but there was no effect in females. The weight of evidence indicates that synthetic and recombinant glucagon are not different and do not pose a genotoxic risk to humans. Impairment of Fertility Glucagon was not tested in animal fertility studies. Studies in rats have shown that pancreatic glucagon does not cause impaired fertility.

13 NONCLINICAL TOXICOLOGY 13.1 Carcinogenesis, Mutagenesis, Impairment of Fertility Carcinogenesis Long term studies in animals to evaluate carcinogenic potential have not been performed. Mutagenesis Synthetic glucagon was negative in the bacterial reverse mutation assay (Ames test). The clastogenic potential of synthetic glucagon in the Chinese Hamster Ovary (CHO) assay was positive in the absence of metabolic activation. Doses of 100 and 200 mg/kg of glucagon of both pancreatic and recombinant origins gave slightly higher incidences of micronucleus formation in male mice but there was no effect in females. The weight of evidence indicates that synthetic and recombinant glucagon are not different and do not pose a genotoxic risk to humans. Impairment of Fertility Glucagon was not tested in animal fertility studies. Studies in rats have shown that pancreatic glucagon does not cause impaired fertility.

NDA201849

Glucagon

Glucagon

63323-596

HUMAN PRESCRIPTION DRUG

INTRAMUSCULAR,INTRAVENOUS

PACKAGE LABEL - PRINCIPAL DISPLAY - Glucagon Kit 1 mg Vial Label NP509603 Glucagon for Injection (Synthetic) 1 mg per vial For intramuscular or intravenous injection. For diagnostic use only. Reconstitute with Sterile Water for Injection, USP Rx only vial

Novaplus is a registered trademark of Vizient, Inc. Manufactured by: Fresenius Kabi Lake Zurich, IL 60047 www.fresenius-kabi.com/us 451462B logo

17 PATIENT COUNSELING INFORMATION Inform patients that generalized allergic reactions have been reported with glucagon treatment including generalized rash, and in some cases anaphylactic shock with breathing difficulties, and hypotension. Advise patients to monitor and report any signs or symptoms of a hypersensitivity reaction [ see Warnings and Precautions ( 5.5 )] . Inform patients that hypoglycemia has occurred with treatment with glucagon. Inform patients of the symptoms of hypoglycemia and how to treat it. Advise patients to avoid driving or operating machinery until ingesting a meal. Advise patients to inform their health care provider if hypoglycemia occurs so that treatment may be given if necessary [ see Adverse Reactions ( 6 )] . Inform patients with diabetes mellitus that treatment with Glucagon for Injection may increase their risk of hyperglycemia [see Warnings and Precautions ( 5.3 )]. Inform patients with cardiac disease that treatment with Glucagon for Injection may increase their risk of a transient increase in blood pressure and heart rate [see Warnings and Precautions ( 5.4 )].

8.3 Nursing Mothers It is not known whether glucagon is excreted in human milk. Because many drugs are excreted in human milk, caution should be exercised when glucagon is administered to a nursing woman. No clinical studies have been performed in nursing mothers, however, glucagon is a peptide and intact glucagon is not absorbed from the GI tract. Therefore, even if the infant ingested glucagon it would be unlikely to have any effect on the infant. Additionally, glucagon has a short plasma half-life thus limiting amounts available to the child.

8.4 Pediatric Use Safety and effectiveness of Glucagon for Injection have not been established in pediatric patients for use as a diagnostic aid during radiologic examinations to temporarily inhibit movement of the gastrointestinal tract.

8.1 Pregnancy Pregnancy Category B. Reproduction studies were performed in rats and rabbits with another glucagon product at doses of 0.4, 2, and 10 mg per kg. These doses represent exposures of up to 100 and 200 times the human dose based on mg/m 2 for rats and rabbits, respectively, and revealed no evidence of harm to the fetus. There are, however, no adequate and well-controlled studies in pregnant women. Glucagon does not cross the human placental barrier.

8 USE IN SPECIFIC POPULATIONS 8.1 Pregnancy Pregnancy Category B. Reproduction studies were performed in rats and rabbits with another glucagon product at doses of 0.4, 2, and 10 mg per kg. These doses represent exposures of up to 100 and 200 times the human dose based on mg/m 2 for rats and rabbits, respectively, and revealed no evidence of harm to the fetus. There are, however, no adequate and well-controlled studies in pregnant women. Glucagon does not cross the human placental barrier. 8.3 Nursing Mothers It is not known whether glucagon is excreted in human milk. Because many drugs are excreted in human milk, caution should be exercised when glucagon is administered to a nursing woman. No clinical studies have been performed in nursing mothers, however, glucagon is a peptide and intact glucagon is not absorbed from the GI tract. Therefore, even if the infant ingested glucagon it would be unlikely to have any effect on the infant. Additionally, glucagon has a short plasma half-life thus limiting amounts available to the child. 8.4 Pediatric Use Safety and effectiveness of Glucagon for Injection have not been established in pediatric patients for use as a diagnostic aid during radiologic examinations to temporarily inhibit movement of the gastrointestinal tract.

16 HOW SUPPLIED/STORAGE AND HANDLING 16.1 How Supplied Glucagon for Injection is supplied as a sterile, lyophilized white powder in a vial. Presentation/ Product Code Unit of Sale NDC Strength Description/Unit of Use NDC 10 Single dose vials NP509613 63323-596-16 1 mg per vial 1 mL single dose vial of Glucagon for Injection (NDC 63323-596-08) Diagnostic Kit NP509603 63323-594-03 1 mg per vial 1 mL single dose vial of Glucagon for Injection (NDC 63323-596-06) with 1 mL single dose vial of Sterile Water for Injection, USP for reconstitution (NDC 63323-185-03) The container closure is not made with natural rubber latex. 16.2 Recommended Storage Before Reconstitution The package containing Glucagon for Injection vials may be stored up to 24 months at 20° to 25° C (68° to 77° F) [see USP Controlled Room Temperature] prior to reconstitution. Do not freeze. Keep in the original package to protect from light. After Reconstitution The Glucagon for Injection must be reconstituted with Sterile Water for Injection prior to use. Use reconstituted glucagon solution immediately. Discard any unused portion [see Dosage and Administration ( 2.3 )] .