Motilium (Domperidone)

Motilium (Domperidone) – Patient-Friendly Guide for Australia

Basic Product Information

Mechanism of Action

For Patients: Motilium (Domperidone) helps your stomach empty food into your gut more smoothly, reducing feelings of nausea, vomiting, and bloating. It is commonly used for people who feel sick after eating or during certain medical treatments.

For Healthcare Professionals: Domperidone is a peripheral dopamine (D2/D3) receptor antagonist. By blocking dopamine receptors outside the brain (primarily in the gut and chemoreceptor trigger zone), it enhances gastrointestinal motility and increases lower oesophageal sphincter tone, while inhibiting the vomiting reflex. It does not significantly cross the blood-brain barrier, resulting in a lower risk of central neurological side effects compared to metoclopramide.

Pharmacokinetics

• Absorption: Oral bioavailability is about 15% due to first-pass metabolism. Peak plasma concentrations are reached within 30–60 minutes.
• Distribution: Widely distributed; low penetration into the brain.
• Metabolism: Extensively metabolised by the liver (CYP3A4, CYP1A2, CYP2E1).
• Elimination: Primarily faecal (66%), renal route accounts for approximately 33%.
• Duration of Action: Symptom relief usually lasts 4–6 hours per dose, requiring up to three doses daily for chronic symptoms.

Use in Everyday Life and Best Practices

Typical Uses: Motilium is prescribed for relief of:

• Symptoms of nausea and vomiting (due to migraine, medications, delayed gastric emptying)
• Indigestion and feeling of fullness in adults and children 12 years and above
• Sometimes used for reflux in infants or motility issues, under specialist care

Dosing: Adults typically take 10 mg (1 tablet) up to three times daily, 15–30 minutes before meals or as directed by your doctor. The maximum recommended duration is no more than one week unless advised by a specialist.

• Tablets: Swallow whole with a glass of water
• Oral suspension: Measure carefully with the dosing syringe or cup provided, especially for children

Take the exact dose at the advised time—avoid doubling up if you miss a dose; take your next dose at the usual time.

Dosing in the Morning vs Evening

• Morning Use: Taking Motilium before breakfast reduces day-time symptoms and is helpful for those with morning nausea.
• Evening Use: Evening dosing may relieve symptoms after large or late meals. Avoid taking immediately before lying down to reduce reflux risk.
• Tips:
  • Maintain consistency—take doses at similar times daily.
  • If you experience sleep disruption, discuss with your doctor about adjusting dose timing.

Taking with Food or on an Empty Stomach

• Motilium works best when taken 15–30 minutes before meals.
• Taking with a meal or after eating can reduce the medicine’s effectiveness.
• On traditional Australian diets (high fibre, moderate fat), always aim to take it prior to main meals for improved absorption and effect.

Interaction Warnings

Indications

Dosing According to Clinical Indications

Safety Profile and Side Effects

• Common Side Effects (1–10%):
  • Dry mouth
  • Abdominal cramps or discomfort
  • Headache
  • Dizziness
  • Sleepiness
• Uncommon/Rare Side Effects:
  • Allergic reactions (rash, itching, swelling)
  • Heart rhythm disorders (QT prolongation – consult your doctor if you feel faint or have palpitations)
  • Breast tenderness, menstrual irregularities (higher doses/long-term use)
  • Extrapyramidal symptoms (rare, especially in elderly or high doses)
• Warnings:
  • Not recommended for those with existing heart conditions, those taking medicines that affect heart rhythm, or those with moderate/severe liver problems.
• Seek immediate help if: You develop chest pain, a sudden rash, swelling, severe dizziness, or difficulty breathing.

Guidelines for Proper Use

• Store Motilium below 25°C, out of reach of children.
• Strictly follow your doctor’s or pharmacist’s advice on dosing and duration.
• Never exceed the recommended daily dose (maximum 30 mg/day for adults).
• If symptoms persist after 7 days, consult your doctor—do not continue without medical review.
• Inform your GP or pharmacist of all other medications, including over-the-counter vitamins and supplements.
• Dispose of any unused medicine in accordance with local pharmacy schemes—do not flush or throw in household waste.

Alternative Treatment Options

• Metoclopramide (Maxolon): Similar prokinetic effects, but penetrates the brain more and may cause drowsiness or movement disorders, especially in young or elderly.
• Ondansetron: Preferred for chemotherapy/radiotherapy-induced nausea, but constipating and more costly; usually only short-term. Available on PBS for certain cancer indications.
• Non-drug options: Ginger root, dietary adjustments (smaller meals, less fat), oral rehydration therapy (when vomiting).
• Cyclizine, Prochlorperazine: Sometimes prescribed for severe nausea, but with higher side effect profiles and sedation risk.

Always consult your healthcare provider to select the safest and most effective option for your condition.

Legal, Registration, and Reimbursement Status in Australia

• Registered with the Therapeutic Goods Administration (TGA) for approved indications.
• Prescription-only; not legally available for over-the-counter purchase.
• Approved for short-term use (up to 7 days) under PBS/RPBS for limited indications. Off-label use may not be reimbursed.
• Not routinely recommended for chronic gastrointestinal symptoms without specialist involvement.

Latest Research and Clinical Guidance (2022–2025)

• Recent TGA advice (2022–2023) clarifies use is limited to short-term management of nausea/vomiting due to increased recognition of cardiac risks, especially in older adults and those with concurrent QT-prolonging drugs (TGA safety update, 2022).
• 2023 Australian guidelines for chemotherapy-induced nausea recommend ondansetron as first-line, reserving domperidone for patients intolerant of other options (eviQ, Cancer Institute NSW, 2023).
• Clinical evidence summary (PMC, 2023): Domperidone remains useful in prokinetic therapy, but with careful cardiac monitoring and short-term limitation, particularly in adults over 60 or with cardiac risk factors.
• Pediatric and lactation use: Only under specialist guidance, with periodic ECG assessment for QT interval in high-risk populations.

Availability and Delivery in Australia

*Dependent on pharmacy stock and delivery provider. Rural/regional delivery may take longer.

Frequently Asked Questions (FAQ)

• Q1: Is it safe to use Motilium long-term for persistent bloating or reflux?
  A: Motilium should only be used short-term (up to 7 days per TGA guidance) unless your specialist specifically advises otherwise. Long-term use increases the risk of cardiac side effects, especially in older adults. If you have chronic symptoms, ask your gastroenterologist for a review.
• Q2: Can I use Motilium if I have a heart condition or am taking blood pressure medication?
  A: Generally, domperidone is not recommended if you have a known heart condition or take medicines that affect heart rhythm (such as some blood pressure medicines or anti-arrhythmics) due to a higher risk of cardiac side effects. Always inform your doctor of your full medication list before starting Motilium.
• Q3: Can I drive or work after taking Motilium?
  A: Most people do not experience sedation, but if you feel dizzy or sleepy after your dose, avoid driving, operating machinery, or performing tasks that require alertness. Alcohol increases this risk.
• Q4: What should I do if I miss a dose?
  A: If you forget a dose, take it as soon as you remember, provided it is before your next scheduled dose. Do not double up on doses to make up for a missed one.
• Q5: Is Motilium safe for children?
  A: Motilium is approved for children over 12 years (and over 35 kg). For younger children, it can only be used under specialist paediatric supervision and with specific dosing in oral suspension form.