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British National Formulary for Children: the risk of inappropriate paracetamol prescribing
Sally Eyers1, James Fingleton, Ashley Eastwood
1Medical Research Institute of New Zealand, Private Bag 7902, Newtown, Wellington 6242, New Zealand. sally.eyers@mrinz.ac.nz
Insights
Age-based dosing for paracetamol in children can lead to incorrect dosages. Underweight and overweight children may receive unsafe amounts of paracetamol (acetaminophen) based on current guidelines.
Area of Science:
- Pediatric pharmacology
- Drug safety and efficacy
- Evidence-based medicine
Background:
- Paracetamol (acetaminophen) is a widely used medication for children.
- Current age-based dosing guidelines may not account for individual weight variations.
Purpose of the Study:
- To evaluate the appropriateness of age-based paracetamol dosing in children.
- To identify potential risks associated with current dosing recommendations.
Main Methods:
- Analysis of age-based paracetamol dosing in the British National Formulary for Children (BNFC) 2011-2012.
- Calculation of single and cumulative doses for various weight centiles (9th, 50th, 91st) across different age groups.
Main Results:
- Children at the 9th weight centile (underweight) may receive doses exceeding therapeutic limits.
- Children at the 91st weight centile (overweight) may receive doses below therapeutic limits.
Conclusions:
- Age-based paracetamol dosing poses a risk of under- or overdosing for children with non-standard weights.
- Weight-based dosing adjustments are crucial for safe and effective paracetamol administration in pediatric populations.
Background:
Paracetamol is the most commonly prescribed medicine for children. Age-based dosing guidelines can lead to inappropriate dosing.
Methods:
A review of age-based guidelines for paracetamol in the British National Formulary for Children (BNFC) 2011-2012 was undertaken. Single and cumulative daily doses of paracetamol for boys and girls at 9th, 50th and 91st centiles for weight were calculated for the age groups 1-3 months, 3-12 months, 1-6 years and 6-12 years.
Results:
For children at the 9th centile, aged 3 months and above, doses were above recommended single and cumulative daily dose therapeutic limits when given the highest dose specified for their age. For children at the 91st centile at all ages, doses were below recommended single and cumulative daily dose therapeutic limits when given the lowest dose specified for their age.
Conclusions:
Underweight and overweight children are at risk of inappropriate paracetamol administration based on BNFC age-based dosing instructions.
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