Domperidone Dosing for a 10 kg Child
For a 10 kg child, the appropriate dose of domperidone syrup is 3-5 mg (0.3-0.5 mg/kg) given three times daily before meals, not exceeding 30 mg total per day.
Dosing Calculation
The established pediatric dosing for domperidone is 0.3 mg/kg given three times daily 1. For a 10 kg child, this translates to:
- Single dose: 3 mg (0.3 mg/kg × 10 kg)
- Frequency: Three times daily before meals 1
- Maximum daily dose: 9 mg (well below the 30 mg/day safety limit)
Some studies have used slightly higher doses of 0.5 mg/kg per dose for antiemetic purposes 2, which would equal 5 mg per dose for a 10 kg child, though the lower 0.3 mg/kg dose is more commonly recommended for chronic use 1.
Critical Safety Considerations
Age and Duration Restrictions
- Domperidone should ideally be limited to children over 12 years of age per current regulatory guidance 3
- Maximum treatment duration: 7 days 4, 5
- Off-label use in younger children requires careful risk-benefit assessment 3
Cardiac Monitoring Requirements
QTc prolongation is a significant concern, particularly in infants and young children 6:
- Baseline ECG should be obtained before initiating therapy 6
- QTc prolongation >30 ms has been documented in infants receiving 1.3 mg/kg/day 6
- Monitor for cardiac symptoms (palpitations, syncope) 7
- Avoid in patients with pre-existing cardiac conditions or electrolyte abnormalities 7
Contraindications and Drug Interactions
- Avoid concurrent use with QTc-prolonging medications 5
- Contraindicated with significant cardiac comorbidities 4
- Screen for medications that may interact with domperidone 5
Clinical Efficacy Context
Evidence for domperidone efficacy in pediatric gastroenteritis is limited. A large multicenter trial found that domperidone was not effective for symptomatic treatment of vomiting during acute gastroenteritis compared to ondansetron or placebo 2. However, domperidone has shown efficacy in:
- Chronic pediatric vomiting and regurgitation (superior to metoclopramide and placebo) 1
- Chemotherapy-induced nausea at doses of 0.7 mg/kg per dose 8
Practical Administration
If domperidone syrup is prescribed despite safety concerns:
- Administer 30 minutes before meals 1
- Ensure proper dilution if using injectable formulation to avoid pain 8
- Reassess need for continuation after 7 days maximum 5
- Document clear indication for off-label use in children under 12 years 3
Common Pitfall
The most significant prescribing error is exceeding the 7-day treatment duration (occurred in 84% of cases in one study) and use in patients over 60 years when applied to adult populations 4. In pediatrics, the primary concern is inadequate cardiac monitoring when using domperidone in infants and young children 6.