Flexon Dose in Children
For children older than 12 months, Flexon (ibuprofen-paracetamol combination) should be dosed based on weight: ibuprofen 10 mg/kg plus paracetamol 15 mg/kg per dose, administered every 6-8 hours, not exceeding 3 doses of ibuprofen and 4 doses of paracetamol in 24 hours.
Weight-Based Dosing Guidelines
The combination therapy follows established pediatric dosing for each component:
Ibuprofen Component
- Dose: 10 mg/kg per dose 1
- Frequency: Every 6-8 hours
- Maximum: 3 doses per 24 hours (not to exceed 40 mg/kg/day)
Paracetamol Component
- Dose: 15 mg/kg per dose 2
- Frequency: Every 4-6 hours
- Maximum: 4 doses per 24 hours (not to exceed 60 mg/kg/day) 1
Age-Specific Considerations
For children under 12 months, the combination is generally not recommended due to limited safety data. Individual monotherapy should be used instead 3, 4.
Clinical Indications
The fixed-dose combination is most appropriate for:
- Moderate to severe acute pain unresponsive to monotherapy
- Headache, earache, odontalgia (dental pain)
- Musculoskeletal pain
- Post-operative or post-procedural pain 5, 6
The combination provides superior analgesia compared to either drug alone, with approximately 2.5-4.4 additional hours without fever over 24 hours 7.
Administration Guidelines
Critical safety measures:
- Record all dose times meticulously to prevent accidental overdosing—8-11% of children exceed maximum recommended doses when using combination therapy 7
- Administer with food to improve gastrointestinal tolerability
- Use weight-based dosing rather than age-based when possible for accuracy
- Do not use if child has taken either medication within the preceding dosing interval
Maximum Daily Limits
Absolute maximum doses per 24 hours:
Important Caveats
Contraindications and warnings:
- Avoid in children with renal impairment (adjust doses based on creatinine clearance)
- Avoid ibuprofen in dehydrated children or those with active gastrointestinal bleeding
- Do not use in children with severe hepatic dysfunction (paracetamol component)
- Monitor for signs of hepatotoxicity with paracetamol or gastrointestinal complications with ibuprofen
The combination is more cost-effective than monotherapy due to reduced healthcare utilization, despite higher medication costs 7. However, the primary benefit is enhanced pain control—approximately 23 minutes faster fever clearance and 55 additional minutes without fever in the first 4 hours compared to paracetamol alone 7.
Start with ibuprofen monotherapy first for simple fever; reserve the combination for moderate-to-severe pain or fever unresponsive to single-agent therapy 7, 5.