Metoclopramide

7 DRUG INTERACTIONS Antipsychotics : Potential for additive effects, including TD, EPS, and NMS; avoid concomitant use. ( 7.1 ) Central Nervous System (CNS) depressants : Increased risk of CNS depression. Avoid concomitant use and monitor for adverse reactions. ( 7.1 ) Strong CYP2D6 inhibitors (e.g., quinidine, bupropion, fluoxetine, and paroxetine) : See Full Prescribing Information for recommended dosage reductions. ( 2.1 , 2.2 , 7.1 ) Monoamine oxidase (MAO) inhibitors : Increased risk of hypertension; avoid concomitant use. ( 5.5 , 7.1 ) Additional drug interactions : See Full Prescribing Information. ( 7.1 , 7.2 ) 7.1 Effects of Other Drugs on Metoclopramide Table 3 displays the effects of other drugs on metoclopramide. Table 3. Effects of Other Drugs on Metoclopramide Antipsychotics Clinical Impact Potential for additive effects, including increased frequency and severity of tardive dyskinesia (TD), other extrapyramidal symptoms (EPS), and neuroleptic malignant syndrome (NMS). Intervention Avoid concomitant use [see Warnings and Precautions ( 5.1 , 5.2 , 5.3 )]. Strong CYP2D6 Inhibitors, not Included in Antipsychotic Category Above Clinical Impact Increased plasma concentrations of metoclopramide; risk of exacerbation of extrapyramidal symptoms [see Clinical Pharmacology ( 12.3 )]. Intervention Reduce the metoclopramide tablets dosage [see Dosage and Administration ( 2.1 , 2.2 )]. Examples quinidine, bupropion, fluoxetine, and paroxetine Monoamine Oxidase Inhibitors Clinical Impact Increased risk of hypertension [see Warnings and Precautions ( 5.5 )]. Intervention Avoid concomitant use. Central Nervous System (CNS) Depressants Clinical Impact Increased risk of CNS depression [see Warnings and Precautions ( 5.8 )]. Intervention Avoid metoclopramide tablets or the interacting drug, depending on the importance of the drug to the patient. Examples alcohol, sedatives, hypnotics, opiates and anxiolytics Drugs that Impair Gastrointestinal Motility Clinical Impact Decreased systemic absorption of metoclopramide. Intervention Monitor for reduced therapeutic effect. Examples antiperistaltic antidiarrheal drugs, anticholinergic drugs, and opiates Dopaminergic Agonists and Other Drugs that Increase Dopamine Concentrations Clinical Impact Decreased therapeutic effect of metoclopramide due to opposing effects on dopamine. Intervention Monitor for reduced therapeutic effect. Examples apomorphine, bromocriptine, cabergoline, levodopa, pramipexole, ropinirole, and rotigotine 7.2 Effects of Metoclopramide on Other Drugs Table 4 displays the effects of metoclopramide on other drugs. Table 4. Effects of Metoclopramide on Other Drugs * Interaction does not apply to posaconazole delayed-release tablets Dopaminergic Agonists and Drugs Increasing Dopamine Concentrations Clinical Impact Opposing effects of metoclopramide and the interacting drug on dopamine. Potential exacerbation of symptoms (e.g., parkinsonian symptoms). Intervention Avoid concomitant use [see Warnings and Precautions ( 5.2 )] . Examples Apomorphine, bromocriptine, cabergoline, levodopa, pramipexole, ropinirole, rotigotine Succinylcholine, Mivacurium Clinical Impact Metoclopramide inhibits plasma cholinesterase leading to enhanced neuromuscular blockade. Intervention Monitor for signs and symptoms of prolonged neuromuscular blockade. Drugs with Absorption Altered due to Increased Gastrointestinal Motility Clinical Impact The effect of metoclopramide on other drugs is variable. Increased gastrointestinal (GI) motility by metoclopramide may impact absorption of other drugs leading to decreased or increased drug exposure. Intervention Drugs with Decreased Absorption (e.g., digoxin, atovaquone, posaconazole oral suspension*, fosfomycin) : Monitor for reduced therapeutic effect of the interacting drug. For digoxin monitor therapeutic drug concentrations and increase the digoxin dose as needed (see prescribing information for digoxin). Drugs with Increased Absorption (e.g., sirolimus, tacrolimus, cyclosporine) : Monitor therapeutic drug concentrations and adjust the dose as needed. See prescribing information for the interacting drug. Insulin Clinical Impact Increased GI motility by metoclopramide may increase delivery of food to the intestines and increase blood glucose. Intervention Monitor blood glucose and adjust insulin dosage regimen as needed.

Indicated for "treatment for 4 to 12 weeks of symptomatic, documented gastroesophageal reflux disease in adults who fail to respond to conventional therapy" and for "relief of symptoms associated with acute and recurrent diabetic gastroparesis." Not recommended in pediatric patients because of increased risk of tardive dyskinesia, other extrapyramidal effects, and methemoglobinemia in neonates.

2 DOSAGE AND ADMINISTRATION Symptomatic, Documented Gastroesophageal Reflux in Adults Who Fail Conventional Therapy ( 2.1 ) Administer metoclopramide tablets continuously or intermittently: o Continuous: The recommended dosage is 10 to 15 mg orally, 30 minutes before each meal and at bedtime (maximum of 60 mg per day) for 4 to 12 weeks, as determined by endoscopic response. o Intermittent: Single doses up to 20 mg prior to provoking situation. Acute and Recurrent Diabetic Gastroparesis in Adults ( 2.2 ) The recommended dosage is 10 mg orally, 30 minutes before each meal and at bedtime (maximum of 40 mg per day). Dosage Adjustment in Specific Populations ( 2.1 , 2.2 ) For symptomatic, documented 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 Recommended Dosage for Symptomatic, Documented Gastroesophageal Reflux in Adults Who Fail Conventional Therapy Metoclopramide tablets may be administered continuously or intermittently in patients with symptomatic, documented gastroesophageal reflux who fail to respond to conventional therapy: Continuous Dosing The recommended dosage of metoclopramide tablets is 10 to 15 mg orally four times daily. The maximum recommended daily oral dosage is 60 mg. Administer each dose thirty minutes before a meal and at bedtime. The recommended treatment duration is 4 to 12 weeks, as determined by endoscopic response. Use metoclopramide tablets for the shortest duration of treatment and periodically reassess the need for continued treatment. The maximum recommended duration of treatment is 12 weeks [see Warnings and Precautions ( 5.1 )] . 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 tablets as a 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 Dosage of Metoclopramide Tablets for Symptomatic, Documented Gastroesophageal Reflux in Adults Who Fail Conventional Therapy Recommended Dosage Maximum Recommended Daily Dosage Adult patients 10 to 15 mg four times daily (thirty minutes before each meal and at bedtime) 60 mg Mild hepatic impairment (Child-Pugh A) Elderly patients [see Use in Specific Populations ( 8.5 )] 5 mg 1 four times daily (thirty minutes before each meal and at bedtime) 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), or 10 mg taken three times daily 30 mg CYP2D6 poor metabolizers [see Use in Specific Populations ( 8.9 )] 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) [see Use in Specific Populations ( 8.6 )] 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 daily 20 mg 1 Elderly patients may be more sensitive to the therapeutic or adverse effects of metoclopramide tablets; 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. 2.2 Recommended Dosage for Acute and Recurrent Diabetic Gastroparesis in Adults The recommended oral dosage of metoclopramide tablets for the relief of symptoms in adults with acute and recurrent diabetic gastroparesis is 10 mg four times daily. The maximum recommended daily dosage is 40 mg. Administer each dose thirty minutes before each meal and at bedtime. Use metoclopramide tablets for the shortest duration of treatment and periodically reassess the need for continued treatment. Avoid treatment with metoclopramide, including metoclopramide tablets, for longer than 12 weeks. If longer-term use is unavoidable, routinely monitor for signs and symptoms of TD [ see Warnings and Precautions ( 5.1 ) ]. 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. Table 2. Recommended Metoclopramide Tablet Dosage in Adult Patients with Acute and Recurrent Diabetic Gastroparesis Recommended Dosage Maximum Recommended Daily Dosage Adult Patients 10 mg four times daily (30 minutes before each meal and at bedtime) 40 mg Mild hepatic impairment (Child-Pugh A) Elderly patients [see Use in Specific Populations ( 8.5 )] 5 mg 1 four times daily (30 minutes before each meal and at bedtime) Moderate or severe hepatic impairment (Child-Pugh B or C) [see Use in Specific Populations ( 8.7 )] 5 mg four times daily (30 minutes before each meal and at bedtime) 20 mg CYP2D6 poor metabolizers [see Use in Specific Populations ( 8.9 )] 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 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 [see Use in Specific Populations ( 8.6 )] 5 mg twice daily 10 mg 1 Elderly patients may be more sensitive to the therapeutic or adverse effects of metoclopramide tablets; therefore, consider a lower dosage of 5 mg four times daily with titration to the recommended adult dosage of 10 mg four times daily based upon response and tolerability.

Most common (>10%) reactions are "restlessness, drowsiness, fatigue, and lassitude." Serious neurologic effects include tardive dyskinesia, acute dystonic reactions, drug-induced parkinsonism, akathisia, neuroleptic malignant syndrome, and seizures. Other reported effects include depression with suicidal ideation, fluid retention, hyperprolactinemia-related effects (galactorrhea, amenorrhea, gynecomastia), bronchospasm, and angioedema.