Paracetamol-Induced Toxicity: A Review of the Side Effects Associated with Excessive Consumption and Mishandling

Arnab Roy, Kumari Shiwani Shivam , Divyansh Kumar Gourav , Manish Kumar , Satyam Kumar Prajapati , Gourav Nag , Adarsh Verma , Mithun Kumar , Laxmi Kumari, Shridhar Minz , Jitendra Kumar Yadav ,  Tamanna Kumari , Manish Kumar Singh  , Puja Kumari , Praveen Kumar Gupta ,  Kajal Kumari ,

doi:10.5281/zenodo.16596593

Review Paper | Open Access
Volume 02 | Issue 07 | Article Id IJSRT/250307058

Paracetamol-Induced Toxicity: A Review of the Side Effects Associated with Excessive Consumption and Mishandling
Arnab Roy* ² Kumari Shiwani Shivam ¹ Divyansh Kumar Gourav ¹ Manish Kumar ¹ Satyam Kumar Prajapati ¹ Gourav Nag ¹ Adarsh Verma ¹ Mithun Kumar ¹ Laxmi Kumari ¹ Shridhar Minz ¹ Jitendra Kumar Yadav ¹ Tamanna Kumari ¹ Manish Kumar Singh ¹ Puja Kumari ¹ Praveen Kumar Gupta ¹ Kajal Kumari ¹
¹Ranchi College of Pharmacy, Ranchi, Jharkhand-834003, India.
²Research Scholar, Kalinga University, Raipur, Chattishgarh-492001, India

Abstract

Paracetamol (acetaminophen) is one of the most widely used analgesic and antipyretic medications globally, available over-the-counter in numerous formulations. Despite its perceived safety profile when used appropriately, paracetamol represents a significant cause of drug-induced liver injury and acute hepatic failure worldwide. This comprehensive review examines the mechanisms underlying paracetamol toxicity, explores the spectrum of adverse effects associated with excessive consumption and mishandling, and discusses current management strategies. The hepatotoxic potential of paracetamol is primarily mediated through the formation of the reactive metabolite N-acetyl-p-benzoquinone imine (NAPQI), which depletes glutathione stores and causes oxidative stress when the drug's normal metabolic pathways become saturated. Beyond hepatotoxicity, paracetamol overdose can result in nephrotoxicity, cardio toxicity, and metabolic acidosis. Risk factors for toxicity include chronic alcohol consumption, malnutrition, concurrent medication use, and genetic polymorphisms affecting drug metabolism. Early recognition and prompt treatment with N-acetylcysteine remain crucial for preventing irreversible organ damage. This review synthesizes current understanding of paracetamol toxicity mechanisms, clinical manifestations, risk factors, and therapeutic interventions to provide healthcare professionals with essential knowledge for managing this common yet potentially fatal poisoning.

Keywords

paracetamol, acetaminophen, hepatotoxicity, drug-induced liver injury, NAPQI, N-acetylcysteine

Introduction

Paracetamol, known as acetaminophen in North America, stands as one of the most commonly consumed pharmaceutical agents worldwide, with billions of doses consumed annually for pain relief and fever reduction. Larson et al. (2005) demonstrated that paracetamol-induced liver injury accounts for approximately 50% of acute liver failure cases in the United States. The drug's widespread availability, often in combination formulations, has inadvertently contributed to its potential for misuse and accidental overdose. Blieden et al. (2014) reported that many consumers remain unaware of paracetamol's presence in multiple over-the-counter and prescription medications, leading to unintentional therapeutic duplication and subsequent toxicity. The therapeutic window between effective analgesia and potential toxicity is narrower than commonly perceived, particularly in vulnerable populations. Mazaleuskaya et al. (2015) highlighted that individual variations in metabolism, pre-existing liver disease, and concurrent medications can significantly alter paracetamol's safety profile. Understanding the mechanisms, manifestations, and management of paracetamol toxicity is crucial for healthcare providers, given the drug's ubiquitous presence in clinical practice and domestic medicine cabinets.

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Arnab Roy

Corresponding author

Research Scholar, Kalinga University, Raipur, Chattishgarh-492001, India.