Granisetron Injection

Generic Name: granisetron hydrochloride
Dosage Form: injection

Indications and Usage for Granisetron Injection

Granisetron hydrochloride injection, USP is a serotonin-3 (5-HT3) receptor antagonist indicated for:

The prevention of nausea and/or vomiting associated with initial and repeat courses of emetogenic cancer therapy, including high-dose cisplatin.

Granisetron Injection Dosage and Administration

Prevention of Chemotherapy-Induced Nausea and Vomiting

Adult Patients

The recommended dosage for granisetron hydrochloride injection is 10 mcg/kg administered intravenously within 30 minutes before initiation of chemotherapy, and only on the day(s) chemotherapy is given.

Infusion Preparation

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Granisetron hydrochloride injection may be administered intravenously either undiluted over 30 seconds, or diluted with 0.9% Sodium Chloride or 5% Dextrose and infused over 5 minutes.

Stability

Intravenous infusion of granisetron hydrochloride injection should be prepared at the time of administration. However, granisetron hydrochloride injection has been shown to be stable for at least 24 hours when diluted in 0.9% Sodium Chloride or 5% Dextrose and stored at room temperature under normal lighting conditions.

As a general precaution, granisetron hydrochloride injection should not be mixed in solution with other drugs. Parenteral drug products should be inspected visually for particulate matter and discoloration before administration whenever solution and container permit.

Pediatric Patients

The recommended dose in pediatric patients 2 to 16 years of age is 10 mcg/kg [see CLINICAL STUDIES (14)]. Pediatric patients under 2 years of age have not been studied.

Dosage Forms and Strengths

Single-Use Vials for Injection: 1 mg/mL

Multi-Use Vials for Injection: 4 mg/4 mL

Contraindications

Granisetron hydrochloride injection is contraindicated in patients with known hypersensitivity (e.g. anaphylaxis, shortness of breath, hypotension, urticaria) to the drug or to any of its components.

Warnings and Precautions

Gastric or Intestinal Peristalsis

Granisetron is not a drug that stimulates gastric or intestinal peristalsis. It should not be used instead of nasogastric suction. The use of granisetron in patients following abdominal surgery or in patients with chemotherapy-induced nausea and vomiting may mask a progressive ileus and/or gastric distention.

Cardiovascular Events

An adequate QT assessment has not been conducted, but QT prolongation has been reported with granisetron. Therefore, granisetron should be used with caution in patients with pre-existing arrhythmias or cardiac conduction disorders, as this might lead to clinical consequences. Patients with cardiac disease, on cardio-toxic chemotherapy, with concomitant electrolyte abnormalities and/or on concomitant medications that prolong the QT interval are particularly at risk.

Hypersensitivity Reactions

Hypersensitivity reactions (e.g., anaphylaxis, shortness of breath, hypotension, urticaria) may occur in patients who have exhibited hypersensitivity to other selective 5-HT3 receptor antagonists.

Benzyl Alcohol

Granisetron hydrochloride injection 1 mg/mL contains benzyl alcohol. Benzyl alcohol, a component of granisetron hydrochloride injection 1 mg/mL, has been associated with serious adverse reactions and death, particularly in neonates. The "gasping syndrome," characterized by central nervous system depression, metabolic acidosis, gasping respirations, and high levels of benzyl alcohol and metabolites in blood and urine, has been associated with benzyl alcohol dosages >99 mg/kg/day in neonates and low birth-weight neonates. Additional symptoms may include gradual neurological deterioration, seizures, intracranial hemorrhage, hematologic abnormalities, skin breakdown, hepatic and renal failure, hypotension, bradycardia, and cardiovascular collapse. Although normal therapeutic doses of this product deliver amounts of benzyl alcohol that are substantially lower than those reported in association with the "gasping syndrome," the minimum amount of benzyl alcohol at which toxicity may occur is not known. Premature and low birth-weight infants, as well as patients receiving high dosages, may be more likely to develop toxicity. Practitioners administering this and other medications containing benzyl alcohol should consider the combined daily metabolic load of benzyl alcohol from all sources.

Serotonin Syndrome

The development of serotonin syndrome has been reported with 5-HT3 receptor antagonists. Most reports have been associated with concomitant use of serotonergic drugs (e.g., selective serotonin reuptake inhibitors (SSRIs), serotonin and norepinephrine reuptake inhibitors (SNRIs), monoamine oxidase inhibitors, mirtazapine, fentanyl, lithium, tramadol, and intravenous methylene blue). Some of the reported cases were fatal. Serotonin syndrome occurring with overdose of another 5-HT3 receptor antagoinist alone has also been reported. The majority of reports of serotonin syndrome related to 5-HT3 receptor antagonist use occurred in a post-anesthesia care unit or an infusion center.

Symptoms associated with serotonin syndrome may include the following combination of signs and symptoms: mental status changes (e.g., agitation, hallucinations, delirium, and coma), autonomic instability (e.g., tachycardia, labile blood pressure, dizziness, diaphoresis, flushing, hyperthermia), neuromuscular symptoms (e.g., tremor, rigidity, myoclonus, hyperreflexia, incoordination), seizures, with or without gastrointestinal symptoms (e.g., nausea, vomiting, diarrhea). Patients should be monitored for the emergence of serotonin syndrome, especially with concomitant use of granisetron and other serotonergic drugs. If symptoms of serotonin syndrome occur, discontinue granisetron and initiate supportive treatment. Patients should be informed of the increased risk of serotonin syndrome, especially if granisetron is used concomitantly with other serotonergic drugs [see DRUG INTERACTIONS (7), PATIENT COUNSELING INFORMATION (17)].

Adverse Reactions

QT prolongation has been reported with granisetron [see WARNING AND PRECAUTIONS (5.2) and DRUG INTERACTIONS (7)].

Clinical Trials Experience

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 patients.

Chemotherapy-Induced Nausea and Vomiting

The following have been reported during controlled clinical trials or in the routine management of patients. The percentage figures are based on clinical trial experience only. Table 1 gives the comparative frequencies of the two most commonly reported adverse reactions (≥ 3%) in patients receiving granisetron hydrochloride injection in single-day chemotherapy trials. These patients received chemotherapy, primarily cisplatin, and intravenous fluids during the 24-hour period following granisetron hydrochloride injection administration. Reactions were generally recorded over seven days post-granisetron hydrochloride injection administration.

Table 1 Principal Adverse Reactions in Clinical Trials — Single-Day Chemotherapy

*
Metoclopramide/dexamethasone and phenothiazines/dexamethasone.

Percent of Patients With Reaction

Granisetron Hydrochloride Injection
40 mcg/kg
(n=1268)

Comparator*

(n=422)

Headache

14%

6%

Constipation

3%

3%

Additional adverse events reported in clinical trials were asthenia, somnolence and diarrhea.

In over 3,000 patients receiving granisetron hydrochloride injection (2 to 160 mcg/kg) in single-day and multiple-day clinical trials with emetogenic cancer therapies, adverse events, other than those adverse reactions listed in Table 1, were observed; attribution of many of these events to granisetron is uncertain.

Hepatic

In comparative trials, mainly with cisplatin regimens, elevations of AST and ALT (>2 times the upper limit of normal) following administration of granisetron hydrochloride injection occurred in 2.8% and 3.3% of patients, respectively. These frequencies were not significantly different from those seen with comparators (AST: 2.1%; ALT: 2.4%).

Cardiovascular

Hypertension (2%); hypotension, arrhythmias such as sinus bradycardia, atrial fibrillation, varying degrees of A-V block, ventricular ectopy including non-sustained tachycardia, and ECG abnormalities have been observed rarely.

Central Nervous System

Agitation, anxiety, CNS stimulation and insomnia were seen in less than 2% of patients. Extrapyramidal syndrome occurred rarely and only in the presence of other drugs associated with this syndrome.

Hypersensitivity

Rare cases of hypersensitivity reactions, sometimes severe (eg, anaphylaxis, shortness of breath, hypotension, urticaria) have been reported.

Other

Fever (3%), taste disorder (2%), skin rashes (1%). In multiple-day comparative studies, fever occurred more frequently with granisetron hydrochloride injection (8.6%) than with comparative drugs (3.4%, P<0.014), which usually included dexamethasone.

Postmarketing Experience

The following adverse reactions have been identified during post approval use of granisetron. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to granisetron exposure.

QT prolongation has been reported with granisetron [see WARNINGS AND PRECAUTIONS (5.2) and DRUG INTERACTIONS (7)].

Drug Interactions

Granisetron does not induce or inhibit the cytochrome P-450 drug-metabolizing enzyme system in vitro. There have been no definitive drug-drug interaction studies to examine pharmacokinetic or pharmacodynamic interaction with other drugs; however, in humans, granisetron has been safely administered with drugs representing benzodiazepines, neuroleptics and anti-ulcer medications commonly prescribed with antiemetic treatments. Granisetron hydrochloride injection also does not appear to interact with emetogenic cancer chemotherapies. Because granisetron is metabolized by hepatic cytochrome P-450 drug-metabolizing enzymes, inducers or inhibitors of these enzymes may change the clearance and, hence, the half-life of granisetron. No specific interaction studies have been conducted in anesthetized patients. In addition, the activity of the cytochrome P-450 subfamily 3A4 (involved in the metabolism of some of the main narcotic analgesic agents) is not modified by granisetron in vitro.

In in vitro human microsomal studies, ketoconazole inhibited ring oxidation of granisetron. However, the clinical significance of in vivo pharmacokinetic interactions with ketoconazole is not known. In a human pharmacokinetic study, hepatic enzyme induction with phenobarbital resulted in a 25% increase in total plasma clearance of intravenous granisetron hydrochloride injection. The clinical significance of this change is not known.

QT prolongation has been reported with granisetron. Use of granisetron hydrochloride injection in patients concurrently treated with drugs known to prolong the QT interval and/or are arrhythmogenic may result in clinical consequences.

Serotonin syndrome (including altered mental status, autonomic instability, and neuromuscular symptoms) has been described following the concomitant use of 5-HT3 receptor antagonists and other serotonergic drugs, including selective serotonin reuptake inhibitors (SSRIs) and serotonin and noradrenaline reuptake inhibitors (SNRIs) [see WARNINGS AND PRECAUTIONS (5.5)].

USE IN SPECIFIC POPULATIONS

Pregnancy

Pregnancy Category B

Reproduction studies have been performed in pregnant rats at intravenous doses up to 9 mg/kg/day (54 mg/m2/day, 146 times the recommended human dose based on body surface area) and pregnant rabbits at intravenous doses up to 3 mg/kg/day (35.4 mg/m2/day, 96 times the recommended human dose based on body surface area) and have revealed no evidence of impaired fertility or harm to the fetus due to granisetron. There are, however, no adequate and well-controlled studies in pregnant women. Because animal reproduction studies are not always predictive of human response, this drug should be used during pregnancy only if clearly needed.

Benzyl alcohol may cross the placenta. Granisetron hydrochloride injection 1 mg/mL is preserved with benzyl alcohol and should be used in pregnancy only if the benefit outweighs the potential risk.

Nursing Mothers

It is not known whether granisetron is excreted in human milk. Because many drugs are excreted in human milk, caution should be exercised when granisetron hydrochloride injection is administered to a nursing woman.

Pediatric Use

Benzyl alcohol, a component of granisetron hydrochloride injection 1 mg/mL, has been associated with serious adverse reactions and death, particularly in neonates [see WARNINGS AND PRECAUTIONS (5.4)].

Chemotherapy-Induced Nausea and Vomiting

[See DOSAGE AND ADMINISTRATION (2)] for use in chemotherapy-induced nausea and vomiting in pediatric patients 2 to 16 years of age. Safety and effectiveness in pediatric patients under 2 years of age have not been established.

Geriatric Use

During chemotherapy clinical trials, 713 patients 65 years of age or older received granisetron hydrochloride injection. The safety and effectiveness were similar in patients of various ages.

Overdosage

There is no specific antidote for granisetron hydrochloride injection overdosage. In case of overdosage, symptomatic treatment should be given. Overdosage of up to 38.5 mg of granisetron hydrochloride injection has been reported without symptoms or only the occurrence of a slight headache.

Granisetron Injection Description

Granisetron hydrochloride injection, USP is a serotonin-3 (5-HT3) receptor antagonist. Chemically it is endo-N-(9-methyl-9-azabicyclo [3.3.1] non-3-yl)-1-methyl-1H-indazole-3-carboxamide hydrochloride with a molecular weight of 348.9 (312.4 free base). Its empirical formula is C18H24N4O•HCl, while its chemical structure is:

Granisetron hydrochloride is a white to off-white solid that is readily soluble in water and normal saline at 20°C. Granisetron hydrochloride injection, USP is a clear, colorless, sterile, nonpyrogenic, aqueous solution for intravenous administration.

Granisetron 1 mg/mL is available in 1 mL single-use and 4 mL multi-use vials.

1 mg/mL: Each mL contains 1.12 mg granisetron hydrochloride equivalent to granisetron, 1 mg; sodium chloride, 9 mg; citric acid, 2 mg; benzyl alcohol, 10 mg, as a preservative; sodium hydroxide and hydrochloric acid, as pH adjusters.

The solution’s pH ranges from 4.0 to 6.0.

Granisetron Injection - Clinical Pharmacology

Mechanism of Action

Granisetron is a selective 5-hydroxytryptamine3 (5-HT3) receptor antagonist with little or no affinity for other serotonin receptors, including 5-HT1; 5-HT1A; 5-HT1B/C; 5-HT2; for alpha1-, alpha2- or beta-adrenoreceptors; for dopamine-D2; or for histamine-H1; benzodiazepine; picrotoxin or opioid receptors.

Serotonin receptors of the 5-HT3 type are located peripherally on vagal nerve terminals and centrally in the chemoreceptor trigger zone of the area postrema. During chemotherapy-induced vomiting, mucosal enterochromaffin cells release serotonin, which stimulates 5-HT3 receptors. This evokes vagal afferent discharge and may induce vomiting. Animal studies demonstrate that, in binding to 5-HT3 receptors, granisetron blocks serotonin stimulation and subsequent vomiting after emetogenic stimuli such as cisplatin. In the ferret animal model, a single Granisetron Injection prevented vomiting due to high-dose cisplatin or arrested vomiting within 5 to 30 seconds.

In most human studies, granisetron has had little effect on blood pressure, heart rate or ECG. No evidence of an effect on plasma prolactin or aldosterone concentrations has been found in other studies.

Granisetron hydrochloride injection exhibited no effect on oro-cecal transit time in normal volunteers given a single intravenous infusion of 50 mcg/kg or 200 mcg/kg. Single and multiple oral doses slowed colonic transit in normal volunteers.

Pharmacokinetics

Chemotherapy-Induced Nausea and Vomiting

In adult cancer patients undergoing chemotherapy and in volunteers, mean pharmacokinetic data obtained from an infusion of a single 40 mcg/kg dose of granisetron hydrochloride injection are shown in Table 2.

 
Table 2 Pharmacokinetic Parameters in Adult Cancer Patients Undergoing Chemotherapy and in Volunteers, Following a Single Intravenous 40 mcg/kg Dose of Granisetron Hydrochloride Injection
*
5-minute infusion.
3-minute infusion.

Peak Plasma Concentration
(ng/mL)

Terminal Phase Plasma Half-Life
(h)

Total Clearance
(L/h/kg)

Volume of Distribution
(L/kg)

Cancer Patients

  Mean

63.8*

8.95*

0.38*

3.07*

  Range

18 to 176

0.90 to 31.1

0.14 to 1.54

0.85 to 10.4

Volunteers

  21 to 42 years

  Mean

64.3

4.91

0.79

3.04

  Range

11.2 to 182

0.88 to 15.2

0.20 to 2.56

1.68 to 6.13

  65 to 81 years

  Mean

57

7.69

0.44

3.97

  Range

14.6 to 153

2.65 to 17.7

0.17 to 1.06

1.75 to 7.01

Distribution

Plasma protein binding is approximately 65% and granisetron distributes freely between plasma and red blood cells.

Metabolism

Granisetron metabolism involves N-demethylation and aromatic ring oxidation followed by conjugation. In vitro liver microsomal studies show that granisetron's major route of metabolism is inhibited by ketoconazole, suggestive of metabolism mediated by the cytochrome P-450 3A subfamily. Animal studies suggest that some of the metabolites may also have 5-HT3 receptor antagonist activity.

Elimination

Clearance is predominantly by hepatic metabolism. In normal volunteers, approximately 12% of the administered dose is eliminated unchanged in the urine in 48 hours. The remainder of the dose is excreted as metabolites, 49% in the urine, and 34% in the feces.

Subpopulations

Gender

There was high inter- and intra-subject variability noted in these studies. No difference in mean AUC was found between males and females, although males had a higher Cmax generally.

Elderly

The ranges of the pharmacokinetic parameters in elderly volunteers (mean age 71 years), given a single 40 mcg/kg intravenous dose of granisetron hydrochloride injection, were generally similar to those in younger healthy volunteers; mean values were lower for clearance and longer for half-life in the elderly patients (see Table 2).

Pediatric Patients

A pharmacokinetic study in pediatric cancer patients (2 to 16 years of age), given a single 40 mcg/kg intravenous dose of granisetron hydrochloride injection, showed that volume of distribution and total clearance increased with age. No relationship with age was observed for peak plasma concentration or terminal phase plasma half-life. When volume of distribution and total clearance are adjusted for body weight, the pharmacokinetics of granisetron are similar in pediatric and adult cancer patients.

Renal Failure Patients

Total clearance of granisetron was not affected in patients with severe renal failure who received a single 40 mcg/kg intravenous dose of granisetron hydrochloride injection.

Hepatically Impaired Patients

A pharmacokinetic study in patients with hepatic impairment due to neoplastic liver involvement showed that total clearance was approximately halved compared to patients without hepatic impairment. Given the wide variability in pharmacokinetic parameters noted in patients, dosage adjustment in patients with hepatic functional impairment is not necessary.

Nonclinical Toxicology

Carcinogenesis, Mutagenesis, Impairment of Fertility

In a 24-month carcinogenicity study, rats were treated orally with granisetron 1, 5 or 50 mg/kg/day (6, 30 or 300 mg/m2/day). The 50 mg/kg/day dose was reduced to 25 mg/kg/day (150 mg/m2/day) during week 59 due to toxicity. For a 50 kg person of average height (1.46 m2 body surface area), these doses represent 16, 81 and 405 times the recommended clinical dose (0.37 mg/m2, iv) on a body surface area basis. There was a statistically significant increase in the incidence of hepatocellular carcinomas and adenomas in males treated with 5 mg/kg/day (30 mg/m2/day, 81 times the recommended human dose based on body surface area) and above, and in females treated with 25 mg/kg/day (150 mg/m2/day, 405 times the recommended human dose based on body surface area). No increase in liver tumors was observed at a dose of 1 mg/kg/day (6 mg/m2/day, 16 times the recommended human dose based on body surface area) in males and 5 mg/kg/day (30 mg/m2/day, 81 times the recommended human dose based on body surface area) in females. In a 12-month oral toxicity study, treatment with granisetron 100 mg/kg/day (600 mg/m2/day, 1622 times the recommended human dose based on body surface area) produced hepatocellular adenomas in male and female rats while no such tumors were found in the control rats. A 24-month mouse carcinogenicity study of granisetron did not show a statistically significant increase in tumor incidence, but the study was not conclusive.

Because of the tumor findings in rat studies, granisetron hydrochloride injection should be prescribed only at the dose and for the indication recommended [see INDICATIONS AND USAGE (1) and DOSAGE AND ADMINISTRATION (2)].

Granisetron was not mutagenic in an in vitro Ames test and mouse lymphoma cell forward mutation assay, and in vivo mouse micronucleus test and in vitro and ex vivo rat hepatocyte UDS assays. It, however, produced a significant increase in UDS in HeLa cells in vitro and a significant increased incidence of cells with polyploidy in an in vitro human lymphocyte chromosomal aberration test.

Granisetron at subcutaneous doses up to 6 mg/kg/day (36 mg/m2/day, 97 times the recommended human dose based on body surface area) was found to have no effect on fertility and reproductive performance of male and female rats.

Clinical Studies

Chemotherapy-Induced Nausea and Vomiting

Single-Day Chemotherapy

Cisplatin-Based Chemotherapy

In a double-blind, placebo-controlled study in 28 cancer patients, granisetron hydrochloride injection administered as a single intravenous infusion of 40 mcg/kg, was significantly more effective than placebo in preventing nausea and vomiting induced by cisplatin chemotherapy (see Table 3).

Table 3 Prevention of Chemotherapy-Induced Nausea and Vomiting — Single-Day Cisplatin Therapy**

*
No vomiting and no moderate or severe nausea

Granisetron Hydrochloride Injection

Placebo

P-Value

Number of Patients

14

14

Response Over 24 Hours

Complete Response*

93%

7%

<0.001

No Vomiting

93%

14%

<0.001

No More Than Mild Nausea

93%

7%

<0.001

 
** Cisplatin administration began within 10 minutes of granisetron hydrochloride injection infusion and continued for 1.5 to 3 hours. Mean cisplatin dose was 86 mg/m2 in the granisetron hydrochloride injection group and 80 mg/m2 in the placebo group.

Granisetron hydrochloride injection was also evaluated in a randomized dose response study of cancer patients receiving cisplatin ≥75 mg/m2. Additional chemotherapeutic agents included: anthracyclines, carboplatin, cytostatic antibiotics, folic acid derivatives, methylhydrazine, nitrogen mustard analogs, podophyllotoxin derivatives, pyrimidine analogs, and vinca alkaloids. Granisetron hydrochloride injection doses of 10 and 40 mcg/kg were superior to 2 mcg/kg in preventing cisplatin-induced nausea and vomiting, but 40 mcg/kg was not significantly superior to 10 mcg/kg (see Table 4).

Table 4 Prevention of Chemotherapy-Induced Nausea and Vomiting — Single-Day High-Dose Cisplatin Therapy**

*
No vomiting and no moderate or severe nausea

Granisetron Hydrochloride Injection
(mcg/kg)

P-Value
(vs. 2 mcg/kg)

2

10

40

10

40

Number of Patients

52

52

53

Response Over 24 Hours

Complete Response*

31%

62%

68%

<0.002

<0.001

No Vomiting

38%

65%

74%

<0.001

<0.001

No More Than Mild Nausea

58%

75%

79%

NS

0.007

 
** Cisplatin administration began within 10 minutes of granisetron hydrochloride injection infusion and continued for 2.6 hours (mean). Mean cisplatin doses were 96 to 99 mg/m2.

Granisetron hydrochloride injection was also evaluated in a double-blind, randomized dose response study of 353 patients stratified for high (≥80 to 120 mg/m2) or low (50 to 79 mg/m2) cisplatin dose. Response rates of patients for both cisplatin strata are given in Table 5.

Table 5 Prevention of Chemotherapy-Induced Nausea and Vomiting — Single-Day High-Dose and Low-Dose Cisplatin Therapy**

*
No vomiting and no moderate or severe nausea

Granisetron Hydrochloride Injection
(mcg/kg)

P-Value
(vs. 5 mcg/kg)

5

10

20

40

10

20

40

High-Dose Cisplatin

Number of Patients

40

49

48

47

Response Over 24 Hours

  Complete Response*

18%

41%

40%

47%

0.018

0.025

0.004

  No Vomiting

28%

47%

44%

53%

NS

NS

0.016

  No Nausea

15%

35%

38%

43%

0.036

0.019

0.005

Low-Dose Cisplatin

Number of Patients

42

41

40

46

Response Over 24 Hours

  Complete Response*

29%

56%

58%

41%

0.012

0.009

NS

  No Vomiting

36%

63%

65%

43%

0.012

0.008

NS

  No Nausea

29%

56%

38%

33%

0.012

NS

NS

 
** Cisplatin administration began within 10 minutes of granisetron hydrochloride injection infusion and continued for 2 hours (mean). Mean cisplatin doses were 64 and 98 mg/m2 for low and high strata.

For both the low and high cisplatin strata, the 10, 20, and 40 mcg/kg doses were more effective than the 5 mcg/kg dose in preventing nausea and vomiting within 24 hours of chemotherapy administration. The 10 mcg/kg dose was at least as effective as the higher doses.

Moderately Emetogenic Chemotherapy

Granisetron hydrochloride injection, 40 mcg/kg, was compared with the combination of chlorpromazine (50 to 200 mg/24 hours) and dexamethasone (12 mg) in patients treated with moderately emetogenic chemotherapy, including primarily carboplatin >300 mg/m2, cisplatin 20 to 50 mg/m2 and cyclophosphamide >600 mg/m2. Granisetron hydrochloride injection was superior to the chlorpromazine regimen in preventing nausea and vomiting (see Table 6).

Table 6 Prevention of Chemotherapy-Induced Nausea and Vomiting — Single-Day Moderately Emetogenic Chemotherapy

*
Patients also received dexamethasone, 12 mg.
No vomiting and no moderate or severe nausea.

Granisetron Hydrochloride Injection

Chlorpromazine*

P-Value

Number of Patients

133

133

Response Over 24 Hours

Complete Response

68%

47%

<0.001

No Vomiting

73%

53%

<0.001

No More Than Mild Nausea

77%

59%

<0.001

In other studies of moderately emetogenic chemotherapy, no significant difference in efficacy was found between granisetron hydrochloride injection doses of 40 mcg/kg and 160 mcg/kg.

Repeat-Cycle Chemotherapy

In an uncontrolled trial, 512 cancer patients received granisetron hydrochloride injection, 40 mcg/kg, prophylactically, for two cycles of chemotherapy, 224 patients received it for at least four cycles, and 108 patients received it for at least six cycles. Granisetron hydrochloride injection efficacy remained relatively constant over the first six repeat cycles, with complete response rates (no vomiting and no moderate or severe nausea in 24 hours) of 60% to 69%. No patients were studied for more than 15 cycles.

Pediatric Studies

A randomized double-blind study evaluated the 24-hour response of 80 pediatric cancer patients (age 2 to 16 years) to granisetron hydrochloride injection 10, 20 or 40 mcg/kg. Patients were treated with cisplatin ≥60 mg/m2, cytarabine ≥3 g/m2, cyclophosphamide ≥1 g/m2 or nitrogen mustard ≥6 mg/m2 (see Table 7).

Table 7 Prevention of Chemotherapy-Induced Nausea and Vomiting in Pediatric Patients

*
No vomiting and no moderate or severe nausea.

Granisetron Hydrochloride Injection Dose (mcg/kg)

10

20

40

Number of Patients

29

26

25

Median Number of Vomiting Episodes

2

3

1

Complete Response Over 24 Hours*

21%

31%

32%

A second pediatric study compared granisetron hydrochloride injection 20 mcg/kg to chlorpromazine plus dexamethasone in 88 patients treated with ifosfamide ≥3 g/m2/day for two or three days. Granisetron hydrochloride injection was administered on each day of ifosfamide treatment. At 24 hours, 22% of granisetron hydrochloride injection patients achieved complete response (no vomiting and no moderate or severe nausea in 24 hours) compared with 10% on the chlorpromazine regimen. The median number of vomiting episodes with granisetron hydrochloride injection was 1.5; with chlorpromazine it was 7.

How Supplied/Storage and Handling

Granisetron hydrochloride injection USP, 1 mg/mL (free base), is supplied in 1 mL Single-Use Vials and 4 mL Multi-Use Vials. CONTAINS BENZYL ALCOHOL.

NDC Number Volume

66758-035-01 Carton of 1 x 1 mL Single-Use Vial

66758-036-01 Carton of 1 x 4 mL Multi-Use Vial

Store single-use vials and multi-use vials at 20° to 25°C (68°F to 77°F); excursions permitted to 15° to 30°C (59° to 86°F). [See USP Controlled Room Temperature].

Once the multi-use vial is penetrated, its contents should be used within 30 days.

Do not freeze. Protect from light. Retain in carton until time of use.

Patient Counseling Information

Patients should be informed that the most common adverse reactions for the indication of chemotherapy induced nausea and vomiting are headache and constipation (see Table 1).

Patients should be advised of the risk of allergic reactions if they have a prior allergic reaction to a class of antiemetics known as 5-HT3 receptor antagonists.

Electrocardiogram changes (QT prolongation) have been reported with the use of granisetron hydrochloride injection. Patients should be cautioned about the use of this drug if they have heart problems or take medications for heart problems.

Patients should be informed that granisetron hydrochloride injection (1 mg/mL) contains benzyl alcohol and may cause serious side effects in newborns.

Advise patients of the possibility of serotonin syndrome with concomitant use of granisetron and another serotonergic agent such as medications to treat depression and migraines. Advise patients to seek immediate medical attention if the following symptoms occur: changes in mental status, autonomic instability, neuromuscular symptoms with or without gastrointestinal symptoms.

Manufactured by EBEWE Pharma Ges.m.b.H. Nfg.KG

A-4866 Unterach, Austria for

Sandoz Inc., Princeton, NJ 08540

Revised: August 2014

PRINCIPAL DISPLAY PANEL

NDC 66758-035-01

Granisetron HCl Injection, USP

1 mg/mL

1 mL single-use vial

Rx only

SANDOZ

PRINCIPAL DISPLAY PANEL

NDC 66758-036-01

Granisetron HCl Injection, USP

4 mg/4mL

4 mL Multi-use vial

Rx only

SANDOZ

GRANISETRON 
Granisetron Injection
Product Information
Product Type HUMAN PRESCRIPTION DRUG LABEL Item Code (Source) NDC:66758-035
Route of Administration INTRAVENOUS DEA Schedule     
Active Ingredient/Active Moiety
Ingredient Name Basis of Strength Strength
GRANISETRON HYDROCHLORIDE (GRANISETRON) GRANISETRON 1 mg  in 1 mL
Inactive Ingredients
Ingredient Name Strength
SODIUM CHLORIDE 9 mg  in 1 mL
CITRIC ACID MONOHYDRATE 2 mg  in 1 mL
BENZYL ALCOHOL 10 mg  in 1 mL
SODIUM HYDROXIDE  
HYDROCHLORIC ACID  
Packaging
# Item Code Package Description
1 NDC:66758-035-01 1 VIAL, SINGLE-USE in 1 CARTON
1 1 mL in 1 VIAL, SINGLE-USE
Marketing Information
Marketing Category Application Number or Monograph Citation Marketing Start Date Marketing End Date
ANDA ANDA078835 06/30/2008
GRANISETRON 
Granisetron Injection
Product Information
Product Type HUMAN PRESCRIPTION DRUG LABEL Item Code (Source) NDC:66758-036
Route of Administration INTRAVENOUS DEA Schedule     
Active Ingredient/Active Moiety
Ingredient Name Basis of Strength Strength
GRANISETRON HYDROCHLORIDE (GRANISETRON) GRANISETRON 1 mg  in 1 mL
Inactive Ingredients
Ingredient Name Strength
SODIUM CHLORIDE 9 mg  in 1 mL
CITRIC ACID MONOHYDRATE 2 mg  in 1 mL
BENZYL ALCOHOL 10 mg  in 1 mL
SODIUM HYDROXIDE  
HYDROCHLORIC ACID  
Packaging
# Item Code Package Description
1 NDC:66758-036-01 1 VIAL, MULTI-DOSE in 1 CARTON
1 4 mL in 1 VIAL, MULTI-DOSE
Marketing Information
Marketing Category Application Number or Monograph Citation Marketing Start Date Marketing End Date
ANDA ANDA078835 06/30/2008
Labeler - Sandoz Inc (005387188)
Revised: 08/2014
 
Sandoz Inc
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