Generic Maxolon ( Metoclopramide )

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Maxolon (Metoclopramide 10 mg): Comprehensive Patient Information for Canada

Basic Product Information

Mechanism of Action

In simple terms: Maxolon is a medication that helps the stomach empty faster and prevents nausea and vomiting. It works by blocking the effects of a natural substance called dopamine in the gut and in the brain's vomiting centre. By doing this, it speeds up the movement of food through the stomach and upper intestine, and it stops the signals that trigger the urge to vomit. It is also used to help pass a tube into the small intestine during certain medical procedures.

For specialists: Metoclopramide is a dopamine-2 (D2) receptor antagonist. It stimulates motility of the upper gastrointestinal tract without stimulating gastric, biliary, or pancreatic secretions. Its mode of action is not fully understood, but it appears to sensitize tissues to the action of acetylcholine. 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 also increases the resting tone of the lower esophageal sphincter. Metoclopramide inhibits the central and peripheral effects of apomorphine, induces release of prolactin, and produces a transient increase in circulating aldosterone levels. The antiemetic effect is due to antagonism of dopamine D2 receptors in the chemoreceptor trigger zone (CTZ).

Pharmacokinetics

• Absorption: The absolute bioavailability of oral metoclopramide is approximately 80% ± 15.5%. Peak plasma concentrations occur about 1 to 2 hours after a single oral dose. Food may delay the time to peak concentration but does not significantly affect the extent of absorption.
• Metabolism: Metoclopramide undergoes enzymatic metabolism via oxidation as well as glucuronide and sulfate conjugation reactions in the liver. The major oxidative metabolite is monodethylmetoclopramide, formed primarily by CYP2D6.
• Elimination: The average elimination half-life in subjects with normal renal function is 5 to 6 hours. Approximately 85% of the radioactivity of an orally administered dose appears in the urine within 72 hours. After oral administration of 10 mg, a mean of 18% of the dose was recovered as free metoclopramide in urine within 36 hours. Metoclopramide is not extensively bound to plasma proteins (about 30%), and the whole body volume of distribution is high (about 3.5 L/kg).
• Onset of Action: Following oral administration, metoclopramide begins to take effect within approximately 30 to 60 minutes. For intravenous use, the antiemetic effect begins within minutes.
• Duration of Action: The antiemetic and prokinetic effects typically last for approximately 1 to 2 hours following a single dose.

Uses in Daily Life and Best Practice Advice

Metoclopramide is prescribed in Canada for the treatment of nausea and vomiting and for conditions involving delayed stomach emptying. Your physician will determine the appropriate use and dose based on your specific medical situation.

• Typical Uses: Symptomatic treatment of nausea and vomiting, including nausea and vomiting caused by acute migraine; prevention of postoperative nausea and vomiting (PONV); prevention of nausea and vomiting associated with radiation therapy; treatment of delayed gastric emptying (diabetic gastroparesis); facilitation of small bowel intubation; and as second-choice treatment for delayed chemotherapy-induced nausea and vomiting (CINV) in children.
• Administration: Tablets are taken orally, usually 30 minutes before meals and at bedtime. The oral solution and injection are also available for patients who cannot take tablets.
• Monitoring: If symptoms do not improve within a reasonable period, or if they worsen, consult your physician. The maximum recommended treatment duration is 5 days for most indications.
• Do Not Exceed Recommended Dose: Do not take more than the prescribed dose. The maximum recommended daily dose is 30 mg or 0.5 mg/kg body weight.

Morning vs. Evening Dosing

Metoclopramide is typically taken three to four times daily, with doses spaced at least 6 hours apart. For best results, take it 30 minutes before meals and at bedtime if needed for nausea. There is no specific clinical recommendation for morning versus evening dosing beyond the meal-related timing. Always follow the schedule recommended by your physician.

• Before Meals: Taking metoclopramide 30 minutes before meals helps with delayed stomach emptying and prevents nausea associated with eating.
• Consistency: Take metoclopramide at the same times each day to ensure consistent effects.
• Missed Dose: If you miss a dose, take it as soon as you remember. If it is almost time for your next dose, skip the missed dose and continue with your regular schedule. Do not take two doses at the same time.
• Minimum Interval: Wait at least 6 hours between each dose, even if you vomit or do not retain the dose, to avoid overdose.

Administration With or Without Food

Metoclopramide should be taken 30 minutes before meals. This timing allows the medication to be absorbed and reach the gastrointestinal tract before food enters, maximizing its prokinetic and antiemetic effects.

• Take the tablet with a full glass of water.
• Take metoclopramide 30 minutes before each meal and at bedtime if prescribed.
• Swallow the tablet whole. Do not crush or chew unless directed by your pharmacist.
• For the oral solution, use the provided measuring device for accurate dosing.
• Avoid taking metoclopramide at the same time as food, as this may reduce its effectiveness for delayed gastric emptying.

Interaction Warnings

Indications for Metoclopramide

"Off-label" means use outside the official approved indication, usually based on current medical guidelines and scientific evidence.

Dosing According to Clinical Indication

Doses should always be adjusted according to the advice of your physician and depending on your health condition. Metoclopramide is contraindicated in children less than 1 year of age due to the risk of extrapyramidal symptoms. The maximum recommended treatment duration is 5 days for most indications; treatment beyond 12 weeks should be avoided in all but rare cases due to the risk of tardive dyskinesia.

Side Effects and Safety Profile

Guidelines for Correct Use

• Take metoclopramide exactly as prescribed by your physician. Do not change your dose without medical advice.
• Take the tablet with a full glass of water, 30 minutes before meals and at bedtime if prescribed.
• Do not exceed the maximum daily dose of 30 mg or 0.5 mg/kg body weight.
• Do not use for more than 5 days for most indications unless directed by your physician.
• Avoid treatment longer than 12 weeks because of the increased risk of developing tardive dyskinesia.
• Wait at least 6 hours between each dose, even if you vomit or do not retain the dose.
• Do not drink alcohol while taking metoclopramide, as it increases the sedative effect.
• Inform every healthcare provider (including dentists, surgeons, and pharmacists) that you are taking metoclopramide.
• If you are pregnant, planning to become pregnant, or breastfeeding, consult your physician before use. Metoclopramide is not recommended during breastfeeding.
• If you miss a dose, take it as soon as you remember. If it is almost time for your next dose, skip the missed dose. Do not double the dose.
• Store at room temperature in a dry place. Keep out of reach of children.

Alternative Treatment Options

• Ondansetron (Zofran): A 5-HT3 receptor antagonist commonly used for nausea and vomiting, particularly chemotherapy-induced and postoperative. Available in oral, orally disintegrating, and injectable forms.
• Prochlorperazine (Stemetil): A phenothiazine antiemetic used for various causes of nausea and vomiting. Available in oral, rectal, and injectable forms.
• Dimenhydrinate (Gravol): An antihistamine antiemetic available over the counter for motion sickness and general nausea.
• Domperidone (Motilium): A peripherally acting dopamine antagonist used as a prokinetic agent and antiemetic. Available in Canada through the Special Access Programme for specific indications.
• Droperidol: A butyrophenone antiemetic used for postoperative nausea and vomiting. Associated with QT prolongation and requires ECG monitoring.
• Haloperidol: A typical antipsychotic with antiemetic properties, sometimes used for refractory nausea and vomiting.

Comparison: Metoclopramide is distinguished from other antiemetics by its dual action as both a prokinetic agent (speeding up stomach emptying) and an antiemetic. It is the most strongly supported antiemetic for nonspecific nausea and vomiting, demonstrating high efficacy with no QT-prolongation concerns. However, its use is limited by the risk of extrapyramidal symptoms and tardive dyskinesia, particularly with prolonged use. Ondansetron has a more favourable side effect profile for short-term use but is less effective as a prokinetic. Your physician will determine the best option for your specific condition.

Legal Status, Registration, and Coverage in Canada

• Registration: Metoclopramide is authorized for sale in Canada by Health Canada as a prescription drug. Numerous generic formulations are available in 5 mg and 10 mg tablets, oral solution, and injection. The brand-name Maxeran and Maxolon products have been discontinued post-market.
• Prescription Status: Prescription only in Canada.
• Coverage: Coverage varies by province, territory, and private insurance plan. Metoclopramide is generally covered by provincial drug plans for approved indications. Generic formulations are generally more affordable than brand-name products.
• Pharmacovigilance: Adverse reactions should be reported to Health Canada's MedEffect Canada program.

Recent Research and Clinical Guidelines (2022–2026)

• Health Canada has strengthened warnings on the labelling of metoclopramide regarding the risk of tardive dyskinesia, advising that treatment longer than 12 weeks should be avoided in all but rare cases.
• The 2026 Praxis Medical Insights guideline recommends metoclopramide as the most strongly supported antiemetic for nonspecific nausea and vomiting, demonstrating the highest efficacy with no QT-prolongation concerns.
• A 2026 guideline for hospitalized patient management recommends oral metoclopramide 10 mg every 6 hours as needed for nausea and vomiting.
• The 2026 pediatric dosing guidelines confirm that metoclopramide is contraindicated in children younger than 1 year, and the standard pediatric dose is 0.1 mg/kg per administration, with a maximum of 10 mg per dose.
• Research continues to explore the role of metoclopramide in various clinical settings, including its use as a galactagogue for breastfeeding mothers, though Health Canada cautions against prolonged use due to tardive dyskinesia risk.

Availability and Supply in Canada

Prices and availability may vary by province, territory, and pharmacy. Generic metoclopramide formulations are widely available in Canada and are generally more affordable than brand-name products. Check with your local pharmacy for current pricing and coverage options.

Frequently Asked Questions (FAQ)

1. What is Maxolon used for?
   Maxolon (metoclopramide) is used to treat nausea and vomiting, including nausea caused by migraine, and to prevent nausea and vomiting after surgery or radiation therapy. It is also used to treat delayed stomach emptying (diabetic gastroparesis) and to help pass a tube into the small intestine during certain medical procedures.
2. How long can I take metoclopramide?
   The maximum recommended treatment duration is 5 days for most indications. Treatment should not exceed 12 weeks because of the increased risk of developing tardive dyskinesia, a serious movement disorder that is often irreversible.
3. What is the correct dose of metoclopramide 10 mg?
   The recommended adult single dose is 10 mg, repeated up to three times daily. The maximum recommended daily dose is 30 mg or 0.5 mg/kg body weight, whichever is lower. For diabetic gastroparesis, the dose may be 10 mg four times daily.
4. Can I take metoclopramide with food?
   Metoclopramide should be taken 30 minutes before meals. This timing allows the medication to be absorbed and reach the gastrointestinal tract before food enters, maximizing its prokinetic and antiemetic effects.
5. What should I do if I miss a dose?
   If you miss a dose, take it as soon as you remember. If it is almost time for your next dose, skip the missed dose and continue with your regular schedule. Do not take two doses at the same time. Wait at least 6 hours between each dose, even if you vomit.
6. Can I drink alcohol while taking metoclopramide?
   No. Alcohol should not be consumed during treatment with metoclopramide because it increases the sedative effect of the medication.
7. What are the serious side effects of metoclopramide?
   Serious side effects include tardive dyskinesia (involuntary, repetitive movements of the face, tongue, or limbs), acute dystonic reactions (involuntary muscle contractions), neuroleptic malignant syndrome (fever, muscle rigidity, altered mental status), and methemoglobinemia. Seek immediate medical attention if you experience any of these symptoms.
8. Is metoclopramide safe during pregnancy?
   Metoclopramide can be used during pregnancy if clinically necessary, based on a large amount of data showing no increased risk of fetal malformations. Consult your physician if you are pregnant or planning to become pregnant.
9. Is metoclopramide safe during breastfeeding?
   Metoclopramide is not recommended during breastfeeding because it passes into breast milk and may cause adverse reactions in the infant, including gastrointestinal discomfort and extrapyramidal signs.
10. What should I do if I experience involuntary movements while taking metoclopramide?
    Seek immediate medical attention if you experience involuntary movements of your face, tongue, limbs, or body. These may be signs of tardive dyskinesia or an acute dystonic reaction. Do not wait for symptoms to resolve on their own.

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