metoclopramide 5 MG Disintegrating Oral Tablet

INDICATIONS AND USAGE GIMOTI is indicated for the relief of symptoms in adults with acute and recurrent diabetic gastroparesis. GIMOTI is a dopamine-2 (D 2 ) antagonist indicated for the relief of symptoms in adults with acute and recurrent diabetic gastroparesis. ( 1 ) Limitations of Use : GIMOTI is not recommended for use in: pediatric patients due to the risk of tardive dyskinesia (TD) and other extrapyramidal symptoms as well as the risk of methemoglobinemia in neonates. ( 1 , 8.4 ) moderate or severe hepatic impairment (Child-Pugh B or C), moderate or severe renal impairment (creatinine clearance less than 60 mL/minute), and patients concurrently using strong CYP2D6 inhibitors due to the risk of increased drug exposure and adverse reactions. ( 1 , 5.9 , 7.1 ) Limitations of Use : GIMOTI is not recommended for use in: pediatric patients due to the risk of developing tardive dyskinesia (TD) and other extrapyramidal symptoms as well as the risk of methemoglobinemia in neonates [see Use in Specific Populations ( 8.4 )]. moderate or severe hepatic impairment (Child-Pugh B or C), moderate or severe renal impairment (creatinine clearance less than 60 mL/minute), and patients concurrently using strong CYP2D6 inhibitors due to the risk of increased drug exposure and adverse reactions [see Warnings and Precautions ( 5.9 )]. Limitations of Use : GIMOTI is not recommended for use in: pediatric patients due to the risk of developing tardive dyskinesia (TD) and other extrapyramidal symptoms as well as the risk of methemoglobinemia in neonates [see Use in Specific Populations ( 8.4 )]. moderate or severe hepatic impairment (Child-Pugh B or C), moderate or severe renal impairment (creatinine clearance less than 60 mL/minute), and patients concurrently using strong CYP2D6 inhibitors due to the risk of increased drug exposure and adverse reactions [see Warnings and Precautions ( 5.9 )].

DOSAGE AND ADMINISTRATION Gastroesophageal Reflux ( 2.2 ) Administer metoclopramide continuously or intermittently: Continuous: Administer 10 to 15 mg, 30 minutes before each meal and at bedtime (maximum of 60 mg per day) for 4 to 12 weeks. Intermittent: Single doses up to 20 mg prior to provoking situation. Acute and Recurrent Diabetic Gastroparesis ( 2.3 ) Administer 10 mg, 30 minutes before each meal and at bedtime (maximum of 40 mg per day) for 2 to 8 weeks Dosage Adjustment in Specific Populations ( 2.2 , 2.3 ) For gastroesophageal reflux and acute and recurrent diabetic gastroparesis, see Full Prescribing Information for recommended dosage reductions for elderly patients, in patients with moderate or severe hepatic or renal impairment, and cytochrome P450 2D6 (CYP2D6) poor metabolizers. 2.1 Important Administration Instructions Avoid treatment with metoclopramide for longer than 12 weeks because of the increased risk of developing TD with longer-term use [ see Dosage and Administration ( 2.2 , 2.3 ), Warnings and Precautions ( 5.1 ) ]. 2.2 Dosage for Gastroesophageal Reflux Metoclopramide tablets may be administered continuously or intermittently in patients with symptomatic gastroesophageal reflux who fail to respond to conventional therapy:Metoclopramide tablets may be administered continuously or intermittently in patients with symptomatic gastroesophageal reflux who fail to respond to conventional therapy: Continuous Dosing The recommended adult dosage of metoclopramide is 10 to 15 mg four times daily for 4 to 12 weeks. The treatment duration is determined by endoscopic response. Administer the dosage thirty minutes before each meal and at bedtime. The maximum recommended daily dosage is 60 mg.The recommended adult dosage of metoclopramide is 10 to 15 mg four times daily for 4 to 12 weeks. The treatment duration is determined by endoscopic response. Administer the dosage thirty minutes before each meal and at bedtime. The maximum recommended daily dosage is 60 mg. Table 1 displays the recommended daily dosage and maximum daily dosage for adults and dosage adjustments for patients with moderate or severe hepatic impairment (Child-Pugh B or C), in patients with creatinine clearance less than 60 mL/minute, in cytochrome P450 2D6 (CYP2D6) poor metabolizers, and with concomitant use with strong CYP2D6 inhibitors. Intermittent Dosing If symptoms only occur intermittently or at specific times of the day, administer metoclopramide in single dose up to 20 mg prior to the provoking situation. Consider dosage reductions for the populations and situations in Table 1.If symptoms only occur intermittently or at specific times of the day, administer metoclopramide in single dose up to 20 mg prior to the provoking situation. Consider dosage reductions for the populations and situations in Table 1. Table 1. Recommended Metoclopramide Tablet Dosage in Patients with Gastroesophageal Reflux Recommended Dosage Maximum Recommended Daily Dosage Adult patientsAdult patients 10 to 15 mg four times daily (thirty minutes before each meal and at bedtime)10 to 15 mg four times daily (thirty minutes before each meal and at bedtime) 60 mg60 mg Mild hepatic impairment (Child-Pugh A)Mild hepatic impairment (Child-Pugh A) Elderly patients [ ] Elderly patients [ see Use in Specific Populations ( 8.5 ) ] 5 mg four times daily (thirty minutes before each meal and at bedtime) 5 mg Elderly patients may be more sensitive to the therapeutic or adverse effects of metoclopramide; therefore, consider a lower starting dosage of 5 mg four times daily with titration to the recommended adult dosage of 10 to 15 mg four times daily based upon response and tolerability. four times daily (thirty minutes before each meal and at bedtime) Moderate or severe hepatic impairment (Child-Pugh B or C) [ ] Moderate or severe hepatic impairment (Child-Pugh B or C) [ see Use in Specific Populations ( 8.7 ) ] 5 mg four times daily (thirty minutes before each meal and at bedtime), or5 mg four times daily (thirty minutes before each meal and at bedtime), or 10 mg taken three times daily10 mg taken three times daily 30 mg30 mg CYP2D6 poor metabolizers [ ] CYP2D6 poor metabolizers [ see Use in Specific Populations ( 8.9 ) ] Concomitant use with strong CYP2D6 inhibitors (e.g., quinidine, bupropion, fluoxetine, and paroxetine) [ ] Concomitant use with strong CYP2D6 inhibitors (e.g., quinidine, bupropion, fluoxetine, and paroxetine) [ see Drug Interactions ( 7.1 ) ] Moderate or severe renal impairment (creatinine clearance less than or equal to 60 mL/minute) [ ] Moderate or severe renal impairment (creatinine clearance less than or equal to 60 mL/minute) [ see Use in Specific Populations ( 8.6 ) ] Patients with End-Stage Renal Disease (ESRD) including those treated with hemodialysis and continuous ambulatory peritoneal dialysis [ ] Patients with End-Stage Renal Disease (ESRD) including those treated with hemodialysis and continuous ambulatory peritoneal dialysis [ see Use in Specific Populations ( 8.6 ) ] 5 mg four times daily (thirty minutes before each meal and at bedtime) or 10 mg twice daily5 mg four times daily (thirty minutes before each meal and at bedtime) or 10 mg twice daily 20 mg20 mg 2.3 Dosage for Acute and Recurrent Diabetic Gastroparesis The recommended adult dosage for the treatment of acute and recurrent diabetic gastroparesis is 10 mg four times daily for 2 to 8 weeks, depending on symptomatic response. Avoid metoclopramide treatment for greater than 12 weeks [ ]. Administer the dosage thirty minutes before each meal and at bedtime. The maximum recommended daily dosage is 40 mg. The recommended adult dosage for the treatment of acute and recurrent diabetic gastroparesis is 10 mg four times daily for 2 to 8 weeks, depending on symptomatic response. Avoid metoclopramide treatment for greater than 12 weeks [ see Warnings and Precautions ( 5.1 ) ]. Administer the dosage thirty minutes before each meal and at bedtime. The maximum recommended daily dosage is 40 mg. Table 2 displays the recommended daily dosage and maximum daily dosage for adults and dosage adjustments for patients with moderate or severe hepatic impairment (Child-Pugh B or C), in patients with creatinine clearance less than 60 mL/minute, in cytochrome P450 2D6 (CYP2D6) poor metabolizers, and with concomitant use with strong CYP2D6 inhibitors. If patients with diabetic gastroparesis have severe nausea or vomiting and are unable to take oral metoclopramide tablets, consider starting therapy with metoclopramide injection given intramuscularly or intravenously for up to 10 days (see the prescribing information for metoclopramide injection). After patients are able to take oral therapy, switch to metoclopramide tablets.If patients with diabetic gastroparesis have severe nausea or vomiting and are unable to take oral metoclopramide tablets, consider starting therapy with metoclopramide injection given intramuscularly or intravenously for up to 10 days (see the prescribing information for metoclopramide injection). After patients are able to take oral therapy, switch to metoclopramide tablets. Table 2. Recommended Metoclopramide Tablet Dosage in Patients with Acute and Recurrent Diabetic Gastroparesis Recommended Dosage Maximum Recommended Daily Dosage Adult PatientsAdult Patients 10 mg four times daily (30 minutes before each meal and at bedtime)10 mg four times daily (30 minutes before each meal and at bedtime) 40 mg40 mg Mild hepatic impairment (Child-Pugh A)Mild hepatic impairment (Child-Pugh A) Elderly patients [ ] Elderly patients [ see Use in Specific Populations ( 8.5 ) ] 5 mg four times daily (30 minutes before each meal and at bedtime) 5 mg Elderly patients may be more sensitive to the therapeutic or adverse effects of metoclopramide; therefore, consider a lower dosage of 5 mg four times daily with titration to the recommended adult dosage of 10 mg four time daily based upon response and tolerability. four times daily (30 minut

WARNINGS AND PRECAUTIONS Tardive Dyskinesia (TD), Other Extrapyramidal Symptoms (EPS), and Neuroleptic Malignant Syndrome (NMS) : Avoid concomitant use of other drugs known to cause TD/EPS/NMS and avoid use in patients with Parkinson's Disease. If symptoms occur, discontinue metoclopramide tablets and seek immediate medical attention. ( 5.1 , 5.2 , 5.3 , 7.1 , 7.2 ) Depression and suicidal ideation/suicide : Avoid use. ( 5.4 ) 5.1 Tardive Dyskinesia Metoclopramide can cause tardive dyskinesia (TD), a syndrome of potentially irreversible and disfiguring involuntary movements of the face or tongue, and sometimes of the trunk and/or extremities. Movements may be choreoathetotic in appearance. The risk of developing TD and the likelihood that TD will become irreversible increases with duration of treatment and total cumulative dosage. Additionally, the risk of developing TD is increased among the elderly, especially elderly women [see Use in Specific Populations ( 8.5 )] , and in patients with diabetes mellitus. Due to the risk of developing TD, avoid treatment with metoclopramide tablets for longer than 12 weeks and reduce the dosage in elderly patients [see Dosage and Administration ( 2.2 , 2.3 )]. Discontinue metoclopramide tablets immediately in patients who develop signs and symptoms of TD. There is no known effective treatment for established cases of TD, although in some patients TD may remit, partially or completely, within several weeks to months after metoclopramide tablets are withdrawn. Metoclopramide tablets itself may suppress, or partially suppress, the signs of TD, thereby masking the underlying disease process. The effect of this symptomatic suppression upon the long-term course of TD is unknown. Metoclopramide tablets is contraindicated in patients with a history of TD [see Contraindications ( 4 )]. Avoid metoclopramide tablets in patients receiving other drugs that are likely to cause TD (e.g., antipsychotics). 5.2 Other Extrapyramidal Symptoms In addition to TD, metoclopramide may cause other extrapyramidal symptoms (EPS), parkinsonian symptoms, and motor restlessness. Advise patients to seek immediate medical attention if such symptoms occur and to discontinue metoclopramide tablets. Extrapyramidal symptoms (EPS), such as acute dystonic reactions, occurred in patients treated with metoclopramide dosages of 30 mg to 40 mg daily. Such reactions occurred more frequently in adults less than 30 years of age and at higher than recommended dosages. EPS occurred more frequently in pediatric patients compared to adults (metoclopramide tablets are not approved for use in pediatric patients). Symptoms can occur in the first 24 to 48 hours after starting metoclopramide. Symptoms included involuntary movements of limbs and facial grimacing, torticollis, oculogyric crisis, rhythmic protrusion of tongue, bulbar type of speech, trismus, or dystonic reactions resembling tetanus. Rarely, dystonic reactions were present as stridor and dyspnea, possibly due to laryngospasm. Diphenhydramine hydrochloride or benztropine mesylate may be used to treat these adverse reactions. Avoid metoclopramide tablets in patients receiving other drugs that can cause EPS (e.g., antipsychotics). Parkinsonian symptoms (bradykinesia, tremor, cogwheel rigidity, mask-like facies) have occurred after starting metoclopramide, more commonly within the first 6 months, but also after longer periods. Symptoms generally have subsided within 2 to 3 months after discontinuation of metoclopramide tablets. Avoid metoclopramide tablets in patients with Parkinson's disease and other patients being treated with antiparkinsonian drugs due to potential exacerbation of symptoms. Avoid treatment with metoclopramide tablets for more than 12 weeks [see Dosage and Administration ( 2.2 , 2.3 ), Warnings and Precautions ( 5.1 )]. Motor restlessness (akathisia) has developed and consisted of feelings of anxiety, agitation, jitteriness, and insomnia, as well as inability to sit still, pacing, and foot tapping. If symptoms resolve, consider restarting at a lower dosage. 5.3 Neuroleptic Malignant Syndrome Metoclopramide may cause a potentially fatal symptom complex called neuroleptic malignant syndrome (NMS). NMS has been reported in association with metoclopramide overdosage and concomitant treatment with another drug associated with NMS. Avoid metoclopramide tablets in patients receiving other drugs associated with NMS, including typical and atypical antipsychotics. Clinical manifestations of NMS include hyperpyrexia, muscle rigidity, altered mental status, and manifestations of autonomic instability (irregular pulse or blood pressure, tachycardia, diaphoresis, and cardiac arrhythmias). Additional signs may include elevated creatine phosphokinase, myoglobinuria (rhabdomyolysis), and acute renal failure. Patients with such symptoms should be evaluated immediately. In the diagnostic evaluation, consider the presence of other serious medical conditions (e.g., pneumonia, systemic infection) and untreated or inadequately treated extrapyramidal signs and symptoms. Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, malignant hyperthermia, drug fever, serotonin syndrome, and primary central nervous system pathology. Management of NMS includes: Immediate discontinuation of metoclopramide tablets and other drugs not essential to concurrent therapy [see Drug Interactions ( 7.1 )] . Intensive symptomatic treatment and medical monitoring. Treatment of any concomitant serious medical problems for which specific treatments are available. 5.4 Depression Depression has occurred in metoclopramide-treated patients with and without a history of depression. Symptoms have included suicidal ideation and suicide. Avoid metoclopramide tablets use in patients with a history of depression. 5.5 Hypertension Metoclopramide may elevate blood pressure. In one study in hypertensive patients, intravenously administered metoclopramide was shown to release catecholamines; hence, avoid use in patients with hypertension or in patients taking monoamine oxidase inhibitors [see Drug Interactions ( 7.1 )] . There are also clinical reports of hypertensive crises in patients with undiagnosed pheochromocytoma. Metoclopramide tablets is contraindicated in patients with pheochromocytoma or other catecholamine-releasing paragangliomas [see Contraindications ( 4 )]. Discontinue metoclopramide tablets in any patient with a rapid rise in blood pressure. 5.6 Fluid Retention Because metoclopramide tablets produces a transient increase in plasma aldosterone, patients with cirrhosis or congestive heart failure may be at risk of developing fluid retention and volume overload. Discontinue metoclopramide tablets if any of these adverse reactions occur. 5.7 Hyperprolactinemia As with other dopamine D 2 receptor antagonists, metoclopramide elevates prolactin levels. Hyperprolactinemia may suppress hypothalamic GnRH, resulting in reduced pituitary gonadotropin secretion. This, in turn, may inhibit reproductive function by impairing gonadal steroidogenesis in both female and male patients. Galactorrhea, amenorrhea, gynecomastia, and impotence have been reported with prolactin-elevating drugs, including metoclopramide. Hyperprolactinemia may potentially stimulate prolactin-dependent breast cancer. However, some clinical studies and epidemiology studies have not shown an association between administration of dopamine D 2 receptor antagonists and tumorigenesis in humans [see Nonclinical Toxicology ( 13.1 )]. 5.8 Effects on the Ability to Drive and Operate Machinery Metoclopramide may impair the mental and/or physical abilities required for the performance of hazardous tasks such as operating machinery or driving a motor vehicle. Concomitant use of central nervous system (CNS) depressants or drugs associated with EPS may increase this effect (e.g., alcohol, sedatives, hypnotics, opiates, and anxioly

CONTRAINDICATIONS Metoclopramide is contraindicated:Metoclopramide is contraindicated: In patients with a history of tardive dyskinesia (TD) or a dystonic reaction to metoclopramide [ see Warnings and Precautions ( 5.1 , 5.2 ) ].In patients with a history of tardive dyskinesia (TD) or a dystonic reaction to metoclopramide [ see Warnings and Precautions ( 5.1 , 5.2 ) ]. When stimulation of gastrointestinal motility might be dangerous (e.g., in the presence of gastrointestinal hemorrhage, mechanical obstruction, or perforation). In patients with pheochromocytoma or other catecholamine-releasing paragangliomas. Metoclopramide may cause a hypertensive/pheochromocytoma crisis, probably due to release of catecholamines from the tumor [ see Warnings and Precautions ( 5.5 ) ]. In patients with epilepsy. Metoclopramide may increase the frequency and severity of seizures [ see Adverse Reactions ( 6 ) ]. In patients with hypersensitivity to metoclopramide. Reactions have included laryngeal and glossal angioedema and bronchospasm [ see Adverse Reactions ( 6 ) ]. History of TD or dystonic reaction to metoclopramide ( 4 ) When stimulation of gastrointestinal motility might be dangerous ( 4 ) Pheochromocytoma, catecholamine-releasing paragangliomas ( 4 ) Epilepsy ( 4 ) Hypersensitivity to metoclopramide ( 4 )

CLINICAL PHARMACOLOGY Metoclopramide stimulates motility of the upper gastrointestinal tract without stimulating gastric, biliary, or pancreatic secretions. Its mode of action is unclear. It seems to sensitize tissues to the action of acetylcholine. The effect of metoclopramide on motility is not dependent on intact vagal innervation, but it can be abolished by anticholinergic drugs. Metoclopramide increases the tone and amplitude of gastric (especially antral) contractions, relaxes the pyloric sphincter and the duodenal bulb, and increases peristalsis of the duodenum and jejunum resulting in accelerated gastric emptying and intestinal transit. It increases the resting tone of the lower esophageal sphincter. It has little, if any, effect on the motility of the colon or gallbladder. In patients with gastroesophageal reflux and low LESP (lower esophageal sphincter pressure), single oral doses of metoclopramide produce dose-related increases in LESP. Effects begin at about 5 mg and increase through 20 mg (the largest dose tested). The increase in LESP from a 5 mg dose lasts about 45 minutes and that of 20 mg lasts between 2 and 3 hours. Increased rate of stomach emptying has been observed with single oral doses of 10 mg. The antiemetic properties of metoclopramide appear to be a result of its antagonism of central and peripheral dopamine receptors. Dopamine produces nausea and vomiting by stimulation of the medullary chemoreceptor trigger zone (CTZ), and metoclopramide blocks stimulation of the CTZ by agents like l-dopa or apomorphine which are known to increase dopamine levels or to possess dopamine-like effects. Metoclopramide also abolishes the slowing of gastric emptying caused by apomorphine. Like the phenothiazines and related drugs, which are also dopamine antagonists, metoclopramide produces sedation and may produce extrapyramidal reactions, although these are comparatively rare (see WARNINGS ). Metoclopramide inhibits the central and peripheral effects of apomorphine, induces release of prolactin and causes a transient increase in circulating aldosterone levels, which may be associated with transient fluid retention. The onset of pharmacological action of metoclopramide is 1 to 3 minutes following an intravenous dose, 10 to 15 minutes following intramuscular administration, and 30 to 60 minutes following an oral dose, pharmacological effects persist for 1 to 2 hours. Pharmacokinetics Metoclopramide is rapidly and well absorbed. Relative to an intravenous dose of 20 mg, the absolute oral bioavailability of metoclopramide is 80% ± 15.5% as demonstrated in a crossover study of 18 subjects. Peak plasma concentrations occur at about 1 to 2 hours after a single oral dose. Similar time to peak is observed after individual doses at steady state. In a single-dose study of 12 subjects, the area under the drug concentration-time curve increases linearly with doses from 20 to 100 mg. Peak concentrations increase linearly with dose; time to peak concentrations remains the same; whole body clearance is unchanged; and the elimination rate remains the same. The average elimination half-life in individuals with normal renal function is 5 to 6 hours. Linear kinetic processes adequately describe the absorption and elimination of metoclopramide. Approximately 85% of the radioactivity of an orally administered dose appears in the urine within 72 hours. Of the 85% eliminated in the urine, about half is present as free or conjugated metoclopramide. The drug is not extensively bound to plasma proteins (about 30%). The whole body volume of distribution is high (about 3.5 L/kg) which suggests extensive distribution of drug to the tissues. Renal impairment affects the clearance of metoclopramide. In a study with patients with varying degrees of renal impairment, a reduction in creatinine clearance was correlated with a reduction in plasma clearance, renal clearance, non-renal clearance, and increase in elimination half-life. The kinetics of metoclopramide in the presence of renal impairment remained linear however. The reduction in clearance as a result of renal impairment suggests that adjustment downward of maintenance dosage should be done to avoid drug accumulation. Adult Pharmacokinetic Data Parameter Value Vd (L/kg) ~3.5 Plasma Protein Binding ~30% t 1/2 (hr) 5 to 6 Oral Bioavailability 80% ± 15.5% In pediatric patients, the pharmacodynamics of metoclopramide following oral and intravenous administration are highly variable and a concentration-effect relationship has not been established. There are insufficient reliable data to conclude whether the pharmacokinetics of metoclopramide in adults and the pediatric population are similar. Although there are insufficient data to support the efficacy of metoclopramide in pediatric patients with symptomatic gastroesophageal reflux (GER) or cancer chemotherapy-related nausea and vomiting, its pharmacokinetics have been studied in these patient populations. In an open-label study, six pediatric patients (age range, 3.5 weeks to 5.4 months) with GER received metoclopramide 0.15 mg/kg oral solution every 6 hours for 10 doses. The mean peak plasma concentration of metoclopramide after the tenth dose was 2-fold (56.8 mcg/L) higher compared to that observed after the first dose (29 mcg/L) indicating drug accumulation with repeated dosing. After the tenth dose, the mean time to reach peak concentrations (2.2 hrs), half-life (4.1 hrs), clearance (0.67 L/h/kg), and volume of distribution (4.4 L/kg) of metoclopramide were similar to those observed after the first dose. In the youngest patient (age, 3.5 weeks), metoclopramide half-life after the first and the tenth dose (23.1 and 10.3 hrs, respectively) was significantly longer compared to other infants due to reduced clearance. This may be attributed to immature hepatic and renal systems at birth. Single intravenous doses of metoclopramide 0.22 to 0.46 mg/kg (mean, 0.35 mg/kg) were administered over 5 minutes to nine pediatric cancer patients receiving chemotherapy (mean age, 11.7 years; range, 7 to 14 yrs) for prophylaxis of cytotoxic-induced vomiting. The metoclopramide plasma concentrations extrapolated to time zero ranged from 65 to 395 mcg/L (mean, 152 mcg/L). The mean elimination half-life, clearance, and volume of distribution of metoclopramide were 4.4 hrs (range, 1.7 to 8.3 hrs), 0.56 L/h/kg (range, 0.12 to 1.20 L/h/kg), and 3.0 L/kg (range, 1.0 to 4.8 L/kg), respectively. In another study, nine pediatric cancer patients (age range, 1 to 9 yrs) received 4 to 5 intravenous infusions (over 30 minutes) of metoclopramide at a dose of 2 mg/kg to control emesis. After the last dose, the peak serum concentrations of metoclopramide ranged from 1060 to 5680 mcg/L. The mean elimination half-life, clearance, and volume of distribution of metoclopramide were 4.5 hrs (range, 2.0 to 12.5 hrs), 0.37 L/h/kg (range, 0.10 to 1.24 L/h/kg), and 1.93 L/kg (range, 0.95 to 5.50 L/kg), respectively. Pediatric Pharmacokinetic Studies a SEM not available. 1. Bateman, DN, et al. Br J Clin Pharmac 15 : 557-559, 1983. 2. Ford, C. Clin Pharmac Ther 43:196, 1988. Reference Dose, Route t 1/2 (hr) CI (L/hr/kg) Vd (L/kg) C max (mcg/L) 1. 0.35 mg/kg IV over 5 min 4.4 ± 0.56 0.56 ± 0.10 3.0 ± 0.38 (Dose/Cp 0 ) 152 ± 31 2. 2 mg/kg 30 min IV infusion 4 to 5 times within 9.5 hours 4.5 a 0.37 a 1.93 a 1060 to 5680 a