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Over-the-counter analgesics: a toxicology perspective
1National Poisons Information Service, Guy's and St Thomas' NHS Trust, United Kingdom. allison.jones@gstt.sthames.nhs.uk
American Journal of Therapeutics
|April 10, 2002
Summary
Paracetamol has a favorable safety profile, while aspirin poses the highest risk among over-the-counter analgesics. Managing overdoses of paracetamol, aspirin, and NSAIDs remains a medical challenge.
Area of Science:
- Pharmacology
- Toxicology
- Public Health
Background:
- Analgesic selection requires balancing therapeutic benefits against risks in both therapeutic use and overdose.
- Over-the-counter (OTC) analgesics like paracetamol, NSAIDs, and aspirin are widely used but carry distinct risk profiles.
Purpose of the Study:
- To evaluate the risk-benefit profiles of common OTC analgesics, focusing on therapeutic use and overdose scenarios.
- To highlight the challenges in managing serious poisoning cases involving these analgesics.
Main Methods:
- Comparative analysis of adverse event data for paracetamol, NSAIDs, and aspirin.
- Review of overdose incidence, severity, and treatment outcomes for each analgesic class.
- Assessment of antidote availability and efficacy.
Main Results:
- Paracetamol demonstrates a low risk of adverse events in therapeutic doses, with few fatalities in overdose, often linked to delayed N-acetylcysteine treatment.
- NSAIDs have greater therapeutic risks than paracetamol but lower overdose severity and no antidote.
- Aspirin presents significant risks in both therapeutic use and overdose, with no antidote, suggesting a poor risk-benefit ratio.
Conclusions:
- Paracetamol offers a favorable safety profile compared to aspirin and NSAIDs.
- Effective management of serious paracetamol, aspirin, and NSAID poisoning is crucial.
- Public health benefits of OTC analgesics must be considered alongside risks.