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Benorylate in management of Still's disease
Insights
The current benorylate dosage for pediatric inflammatory polyarthritis is insufficient. A higher starting dose (200 mg/kg/day) with blood salicylate monitoring is recommended for effective anti-inflammatory treatment in children.
Area of Science:
- Pediatric Rheumatology
- Pharmacology
Background:
- Current benorylate dosing for pediatric inflammatory polyarthritis is suboptimal.
- Effective management requires achieving specific blood salicylate levels for anti-inflammatory effects.
Purpose of the Study:
- To determine an optimal benorylate dosage regimen for children with inflammatory polyarthritis.
- To establish monitoring parameters for safe and effective treatment.
Main Methods:
- Initiated treatment with benorylate at 200 mg/kg/day.
- Monitored blood salicylate levels at seven days to guide dosage adjustments.
- Aimed for a target blood salicylate level of 25-30 mg/100 ml for anti-inflammatory effect.
Main Results:
- The initial recommended benorylate dose is inadequate for pediatric inflammatory polyarthritis.
- Adjusted dosing to achieve target salicylate levels (25-30 mg/100 ml) provides an anti-inflammatory effect.
- Paracetamol levels correlate with salicylate levels, simplifying monitoring in patients with normal liver function.
Conclusions:
- An adequate dosage of benorylate, guided by salicylate level monitoring, is effective for juvenile chronic polyarthritis.
- A starting dose of 200 mg/kg/day with adjustments is recommended.
- Monitoring only salicylate levels is sufficient and safe for therapeutic management.
Abstract:
The present recommended dose of benorylate is not satisfactory for the management of children suffering from inflammatory polyarthritis. A starting dose of 200 mg/kg/day should be used, and the salicylate level checked at seven days and the dosage adjusted to give an anti-inflammatory effect-that is, a blood salicylate level of between 25 and 30 mg/100 ml. Once a satisfactory level has been achieved, this dosage should be maintained with occasional monitoring of the salicylate level. The paracetamol level does not need to be estimated as it tends to follow the salicylate level, provided that liver function is normal; thus it is quite safe to monitor only the salicylate level. Given in an adequate dosage, benorylate seems to be an acceptable salicylate preparation for use in juveniles suffering from chronic polyarthritis.