Safe Oral Analgesia for a 12-Year-Old
For a 12-year-old child, start with oral paracetamol (acetaminophen) 10-15 mg/kg every 6 hours (maximum 60 mg/kg/day) as first-line therapy, and add oral ibuprofen 10 mg/kg every 8 hours for moderate pain or when an anti-inflammatory effect is needed. 1
First-Line Analgesics
Paracetamol (Acetaminophen)
- Dosing: 10-15 mg/kg every 6 hours
- Maximum daily dose: 60 mg/kg/day
- Safety profile: Excellent when dosed appropriately, making it the preferred first-line agent for mild pain 1
- Best for: General pain, fever, headache, non-inflammatory conditions
Ibuprofen (NSAID)
- Dosing: 10 mg/kg every 8 hours 1
- Safety considerations: Generally well-tolerated but carries slightly higher risk of gastrointestinal effects and hypersensitivity compared to paracetamol 2
- Best for: Musculoskeletal pain, inflammatory conditions (sprains, fractures, dental pain), pain with inflammatory component 2, 3
- Contraindications: Active GI bleeding, severe dehydration, renal impairment, known hypersensitivity
Clinical Decision Algorithm
For mild pain without inflammation:
- Use paracetamol alone
For moderate pain or musculoskeletal/inflammatory pain:
- Use ibuprofen as first choice 2
- Can combine with paracetamol for additive effect (they work through different mechanisms)
For severe pain requiring escalation:
- Continue scheduled paracetamol and ibuprofen
- Add oral tramadol 1-1.5 mg/kg every 4-6 hours as breakthrough medication 1
- For the 5-18 years age group (which includes 12-year-olds), oral morphine can be used at 200-300 micrograms/kg, with dose adjusted according to response 1
Evidence Comparison
Recent 2026 meta-analysis data suggests ibuprofen shows a small trend toward superior pain reduction compared to paracetamol (though not reaching statistical significance, p=0.052), particularly for inflammatory pain conditions 4. However, both agents provide clinically meaningful analgesia across most pediatric pain settings 4. The 2024 ESPA guidelines support both agents as safe and effective options 1.
Critical Safety Points
Avoid aspirin entirely - contraindicated in children under 12 years due to Reye's syndrome risk, and generally not recommended for routine use in adolescents 2, 5
Avoid dipyrone - risk of agranulocytosis makes it unsuitable for routine pediatric use 2
Codeine is no longer recommended - due to variable metabolism and risk of respiratory depression in certain genetic phenotypes 6
Metamizole caution - if used, only for short-term postoperative use in hospital settings due to agranulocytosis risk with prolonged use 1
Practical Prescribing
For a typical 40 kg 12-year-old:
- Paracetamol: 400-600 mg every 6 hours (max 2400 mg/day)
- Ibuprofen: 400 mg every 8 hours
- Tramadol (if needed): 40-60 mg every 4-6 hours
Always dose by weight rather than age when possible, and ensure adequate hydration when using NSAIDs.